From: Kevin Day <kevin@kevux.org>
Date: Sat, 29 Apr 2023 02:51:38 +0000 (-0500)
Subject: Bugfix: Fix return codes and clean up package.sh.
X-Git-Url: https://git.kevux.org/?a=commitdiff_plain;h=e93da385c054b0a4c26f24ecfde215322d66bce1;p=fll

Bugfix: Fix return codes and clean up package.sh.

Fix the return code handling just like the test.sh script in commit 5ccbc0f080ca5908f77e20879988b94a4cc0c6a9.

The package.sh script is rather out of date in regards to the use of wrapping braces.
---

diff --git a/build/scripts/bootstrap.sh b/build/scripts/bootstrap.sh
index c39fa97..25abb91 100644
--- a/build/scripts/bootstrap.sh
+++ b/build/scripts/bootstrap.sh
@@ -44,7 +44,7 @@ bootstrap_main() {
 
   local key=
   local -A variables=()
-  local failure=
+  local failure=0
   local settings_name=settings
   local settings_file=
   local settings_defines=
@@ -511,7 +511,7 @@ bootstrap_main() {
   fi
 
   if [[ ${verbosity} != "quiet" ]] ; then
-    if [[ ${failure} != "" || ${verbosity} != "error" ]] ; then
+    if [[ ${failure} -eq 1 || ${verbosity} != "error" ]] ; then
       bootstrap_print_last
     fi
   fi
@@ -858,7 +858,7 @@ bootstrap_load_settings() {
     let failure=1
   fi
 
-  if [[ ${failure} != "" ]] ; then
+  if [[ ${failure} -eq 1 ]] ; then
     return 1
   fi
 
@@ -1065,7 +1065,7 @@ bootstrap_prepare_build() {
 
   mkdir ${verbose_common} -p ${path_build}{documents,includes,libraries/{script,shared,static},objects/{script,shared,static},programs/{script,shared,static},settings,stage} || failure=1
 
-  if [[ ${failure} != "" ]] ; then
+  if [[ ${failure} -eq 1 ]] ; then
     if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       echo -e "${c_warning}WARNING: Failed to create build directories in '${c_notice}${path_build}${c_error}'.${c_reset}"
     fi
@@ -1084,7 +1084,7 @@ bootstrap_prepare_build() {
     fi
   fi
 
-  if [[ ${failure} != "" ]] ; then
+  if [[ ${failure} -eq 1 ]] ; then
     if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       echo -e "${c_warning}WARNING: Failed to create ${c_notice}path_heades${c_error} build directories in '${c_notice}${path_build}${c_error}'.${c_reset}"
     fi
@@ -1094,11 +1094,11 @@ bootstrap_prepare_build() {
 
   touch ${project_built}-${settings_name}.prepared
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build() {
@@ -1398,7 +1398,7 @@ bootstrap_operation_build() {
 
   bootstrap_operation_build_validate_build
 
-  if [[ ${failure} != "" ]] ; then
+  if [[ ${failure} -eq 1 ]] ; then
     return 1
   fi
 
@@ -1411,7 +1411,7 @@ bootstrap_operation_build() {
       else
         mkdir ${verbose_common} -p ${path_build}documentation/${directory} || failure=1
 
-        if [[ ${failure} == "" ]] ; then
+        if [[ ${failure} -eq 0 ]] ; then
           cp ${verbose_common} -R ${path_documentation}${i} ${path_build}documentation/${directory}/ || failure=1
         fi
       fi
@@ -1427,14 +1427,14 @@ bootstrap_operation_build() {
       else
         mkdir ${verbose_common} -p ${path_build}settings/${directory} || failure=1
 
-        if [[ ${failure} == "" ]] ; then
+        if [[ ${failure} -eq 0 ]] ; then
           cp ${verbose_common} -R ${path_settings}${i} ${path_build}settings/${directory}/ || failure=1
         fi
       fi
     done
   fi
 
-  if [[ ${failure} == "" && ${sources_headers} != "" ]] ; then
+  if [[ ${failure} -eq 0 && ${sources_headers} != "" ]] ; then
     if [[ ${preserve_path_headers} == "yes" ]] ; then
       for i in ${sources_headers} ; do
         directory=$(dirname ${i})
@@ -1446,7 +1446,7 @@ bootstrap_operation_build() {
             mkdir ${verbose_common} -p ${path_build}includes/${path_headers}${directory} || failure=1
           fi
 
-          if [[ ${failure} == "" ]] ; then
+          if [[ ${failure} -eq 0 ]] ; then
             cp ${verbose_common} -f ${path_sources}${path_language}${i} ${path_build}includes/${path_headers}${i} || failure=1
           fi
         fi
@@ -1458,7 +1458,7 @@ bootstrap_operation_build() {
     fi
   fi
 
-  if [[ ${failure} == "" && ${build_shared} == "yes" && ! -f ${project_built_shared}.built ]] ; then
+  if [[ ${failure} -eq 0 && ${build_shared} == "yes" && ! -f ${project_built_shared}.built ]] ; then
     if [[ ${sources_object} != "" || ${sources_object_shared} != "" ]] ; then
       sources=
       let count=0
@@ -1524,20 +1524,20 @@ bootstrap_operation_build() {
 
       ${build_compiler} ${sources} -shared -Wl,-soname,lib${build_name}.so${version_target} -o ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_file} ${arguments_shared} ${arguments_include} ${libraries} ${libraries_shared} ${flags} ${flags_shared} ${flags_library} ${flags_library_shared} ${defines} ${defines_shared} ${defines_library} ${defines_library_shared} ${define_extra} || failure=1
 
-      if [[ ${failure} == "" ]] ; then
+      if [[ ${failure} -eq 0 ]] ; then
         if [[ ${version_file_value} != "major" ]] ; then
           if [[ ${version_file_value} == "minor" ]] ; then
             ln ${verbose_common} -sf lib${build_name}.so${version_file} ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_major_prefix}${version_major} || failure=1
           else
             ln ${verbose_common} -sf lib${build_name}.so${version_major_prefix}${version_major}${version_minor_prefix}${version_minor} ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_major_prefix}${version_major} || failure=1
 
-            if [[ ${failure} == "" ]] ; then
+            if [[ ${failure} -eq 0 ]] ; then
               if [[ ${version_file_value} == "micro" ]] ; then
                 ln ${verbose_common} -sf lib${build_name}.so${version_file} ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_major_prefix}${version_major}${version_minor_prefix}${version_minor} || failure=1
               else
                 ln ${verbose_common} -sf lib${build_name}.so${version_major_prefix}${version_major}${version_minor_prefix}${version_minor}${version_micro_prefix}${version_micro} ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_major_prefix}${version_major}${version_minor_prefix}${version_minor} || failure=1
 
-                if [[ ${failure} == "" ]] ; then
+                if [[ ${failure} -eq 0 ]] ; then
                   ln ${verbose_common} -sf lib${build_name}.so${version_file} ${path_build}libraries/${path_library_shared}lib${build_name}.so${version_major_prefix}${version_major}${version_minor_prefix}${version_minor_prefix}${version_minor}${version_micro_prefix}${version_micro} || failure=1
                 fi
               fi
@@ -1545,13 +1545,13 @@ bootstrap_operation_build() {
           fi
         fi
 
-        if [[ ${failure} == "" ]] ; then
+        if [[ ${failure} -eq 0 ]] ; then
           ln ${verbose_common} -sf lib${build_name}.so${version_major_prefix}${version_major} ${path_build}libraries/${path_library_shared}lib${build_name}.so || failure=1
         fi
       fi
     fi
 
-    if [[ ${failure} == "" && ${sources_program} != "" ]] ; then
+    if [[ ${failure} -eq 0 && ${sources_program} != "" ]] ; then
       sources=
       links=
 
@@ -1576,12 +1576,12 @@ bootstrap_operation_build() {
       ${build_compiler} ${sources} -o ${path_build}programs/${path_program_shared}${build_name} ${arguments_shared} ${arguments_include} ${links} ${libraries} ${libraries_shared} ${flags} ${flags_shared} ${flags_program} ${flags_program_shared} ${defines} ${defines_shared} ${defines_program} ${defines_program_shared} ${define_extra} || failure=1
     fi
 
-    if [[ ${failure} == "" ]] ; then
+    if [[ ${failure} -eq 0 ]] ; then
       touch ${project_built_shared}-${settings_name}.built
     fi
   fi
 
-  if [[ ${failure} == "" && ${build_static} == "yes" && ! -f ${project_built_static}.built ]] ; then
+  if [[ ${failure} -eq 0 && ${build_static} == "yes" && ! -f ${project_built_static}.built ]] ; then
     if [[ ${sources_object} != "" || ${sources_object_static} != "" ]] ; then
       let count=0
 
@@ -1659,12 +1659,12 @@ bootstrap_operation_build() {
 
         ${build_compiler} ${path_sources}${path_language}${i} -c -static -o ${path_build}objects/${directory}/${n}.o ${arguments_static} ${arguments_include} ${libraries} ${libraries_static} ${flags} ${flags_static} ${flags_library} ${flags_library_static} ${defines} ${defines_static} ${defines_library} ${defines_library_static} ${define_extra} || failure=1
 
-        if [[ ${failure} != "" ]] ; then
+        if [[ ${failure} -eq 1 ]] ; then
           break;
         fi
       done
 
-      if [[ ${failure} == "" && ( ${sources_library} != "" || ${sources_library_static} != "" ) ]] ; then
+      if [[ ${failure} -eq 0 && ( ${sources_library} != "" || ${sources_library_static} != "" ) ]] ; then
 
         if [[ ${verbosity} == "verbose" ]] ; then
           echo ${build_indexer} ${build_indexer_arguments} ${path_build}libraries/${path_library_static}lib${build_name}.a ${sources}
@@ -1674,7 +1674,7 @@ bootstrap_operation_build() {
       fi
     fi
 
-    if [[ ${failure} == "" && ${sources_program} != "" ]] ; then
+    if [[ ${failure} -eq 0 && ${sources_program} != "" ]] ; then
       sources=
       links=
 
@@ -1699,12 +1699,12 @@ bootstrap_operation_build() {
       ${build_compiler} ${sources} -static -o ${path_build}programs/${path_program_static}${build_name} ${arguments_static} ${arguments_include} ${links} ${libraries} ${libraries_static} ${flags} ${flags_static} ${flags_program} ${flags_program_static} ${defines} ${defines_static} ${defines_program} ${defines_program_static} ${define_extra} || failure=1
     fi
 
-    if [[ ${failure} == "" ]] ; then
+    if [[ ${failure} -eq 0 ]] ; then
       touch ${project_built_static}-${settings_name}.built
     fi
   fi
 
-  if [[ ${failure} != "" ]] ; then
+  if [[ ${failure} -eq 1 ]] ; then
     if [[ ${verbosity} != "quiet" ]] ; then
       bootstrap_print_first
 
@@ -1716,11 +1716,11 @@ bootstrap_operation_build() {
     return 1
   fi
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build_prepare_defaults() {
@@ -2789,11 +2789,11 @@ bootstrap_operation_build_validate_build() {
     let failure=1
   fi
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build_validate_paths() {
@@ -2808,7 +2808,7 @@ bootstrap_operation_build_validate_paths() {
     let failure=1
   fi
 
-  if [[ ${failure} == "" && ${path_sources_object} != "" && ! -d ${path_sources_object} ]] ; then
+  if [[ ${failure} -eq 0 && ${path_sources_object} != "" && ! -d ${path_sources_object} ]] ; then
     if [[ ${verbosity} != "quiet" ]] ; then
       bootstrap_print_first
 
@@ -2818,11 +2818,11 @@ bootstrap_operation_build_validate_paths() {
     let failure=1
   fi
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build_validate_search() {
@@ -2855,11 +2855,11 @@ bootstrap_operation_build_validate_shared_static() {
     let failure=1
   fi
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build_validate_sources() {
@@ -2960,11 +2960,11 @@ bootstrap_operation_build_validate_sources() {
     fi
   done
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 bootstrap_operation_build_prepare_versions() {
diff --git a/build/scripts/install.sh b/build/scripts/install.sh
index 7234d3e..4db64b7 100644
--- a/build/scripts/install.sh
+++ b/build/scripts/install.sh
@@ -43,7 +43,7 @@ install_main() {
   local c_subtle="\\033[1;30m"
   local c_prefix="\\"
 
-  local failure=
+  local failure=0
   local operation=
   local operation_failure=
   local verbosity=normal
@@ -445,18 +445,18 @@ install_main() {
   install_perform_install
 
   if [[ ${verbosity} != "quiet" ]] ; then
-    if [[ ${failure} != "" || ${verbosity} != "error" ]] ; then
+    if [[ ${failure} -eq 1 || ${verbosity} != "error" ]] ; then
       install_print_last
     fi
   fi
 
   install_cleanup
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 install_handle_colors() {
@@ -733,7 +733,7 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" && -d ${path_build}${path_includes} && ${enable_includes} == "yes" ]] ; then
+  if [[ ${failure} -eq 0 && -d ${path_build}${path_includes} && ${enable_includes} == "yes" ]] ; then
     for i in ${path_build}${path_includes}* ; do
 
       file=$(echo ${i} | sed -e "s|^${path_build}${path_includes}||")
@@ -766,7 +766,7 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" && -d ${path_build}${path_libraries} && ( ${enable_shared_libraries} == "yes" || ${enable_static_libraries} == "yes" ) ]] ; then
+  if [[ ${failure} -eq 0 && -d ${path_build}${path_libraries} && ( ${enable_shared_libraries} == "yes" || ${enable_static_libraries} == "yes" ) ]] ; then
     if [[ -d ${path_build}${path_libraries}${path_static} && ${enable_static_libraries} == "yes" ]] ; then
       for i in ${path_build}${path_libraries}${path_static}* ; do
 
@@ -800,7 +800,7 @@ install_perform_install() {
       fi
     fi
 
-    if [[ ${failure} == "" && -d ${path_build}${path_libraries}${path_shared} && ${enable_shared_libraries} == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && -d ${path_build}${path_libraries}${path_shared} && ${enable_shared_libraries} == "yes" ]] ; then
       for i in ${path_build}${path_libraries}${path_shared}* ; do
 
         file=$(echo ${i} | sed -e "s|^${path_build}${path_libraries}${path_shared}||")
@@ -834,7 +834,7 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" && -d ${path_build}${path_programs} && ( ${enable_shared_programs} == "yes" || ${enable_static_programs} == "yes" ) ]] ; then
+  if [[ ${failure} -eq 0 && -d ${path_build}${path_programs} && ( ${enable_shared_programs} == "yes" || ${enable_static_programs} == "yes" ) ]] ; then
     if [[ -d ${path_build}${path_programs}${path_static} && ${enable_static_programs} == "yes" ]] ; then
       for i in ${path_build}${path_programs}${path_static}* ; do
 
@@ -868,7 +868,7 @@ install_perform_install() {
       fi
     fi
 
-    if [[ ${failure} == "" && -d ${path_build}${path_programs}${path_shared} && ${enable_shared_programs} == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && -d ${path_build}${path_programs}${path_shared} && ${enable_shared_programs} == "yes" ]] ; then
       for i in ${path_build}${path_programs}${path_shared}* ; do
 
         file=$(echo ${i} | sed -e "s|^${path_build}${path_programs}${path_shared}||")
@@ -902,7 +902,7 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" && -d ${path_build}${path_settings} && ${enable_settings} == "yes" ]] ; then
+  if [[ ${failure} -eq 0 && -d ${path_build}${path_settings} && ${enable_settings} == "yes" ]] ; then
     for i in ${path_build}${path_settings}* ; do
 
       file=$(echo ${i} | sed -e "s|^${path_build}${path_settings}||")
@@ -935,7 +935,7 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" && -d ${path_build}${path_documentation} && ${enable_documentation} == "yes" ]] ; then
+  if [[ ${failure} -eq 0 && -d ${path_build}${path_documentation} && ${enable_documentation} == "yes" ]] ; then
     for i in ${path_build}${path_documentation}* ; do
 
       file=$(echo ${i} | sed -e "s|^${path_build}${path_documentation}||")
@@ -968,11 +968,11 @@ install_perform_install() {
     fi
   fi
 
-  if [[ ${failure} == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 install_print_first() {
diff --git a/build/scripts/package.sh b/build/scripts/package.sh
index 2ae11b6..6949ae0 100644
--- a/build/scripts/package.sh
+++ b/build/scripts/package.sh
@@ -13,7 +13,7 @@
 
 package_main() {
 
-  if [[ $SHELL_ENGINE == "zsh" ]] ; then
+  if [[ ${SHELL_ENGINE} == "zsh" ]] ; then
     emulate ksh
   fi
 
@@ -41,7 +41,7 @@ package_main() {
   local c_prefix="\\"
 
   local -A variables=()
-  local failure=
+  local failure=0
   local operation=
   local operation_failure=
   local mode_individual=
@@ -63,93 +63,93 @@ package_main() {
   if [[ $# -gt 0 ]] ; then
     t=$#
 
-    while [[ $i -lt $t ]] ; do
-      let i=$i+1
+    while [[ ${i} -lt ${t} ]] ; do
+      let i=${i}+1
 
-      if [[ $SHELL_ENGINE == "zsh" ]] ; then
+      if [[ ${SHELL_ENGINE} == "zsh" ]] ; then
         p=${(P)i}
       else
         p=${!i}
       fi
 
-      if [[ $grab_next == "" ]] ; then
-        if [[ $p == "-h" || $p == "--help" ]] ; then
+      if [[ ${grab_next} == "" ]] ; then
+        if [[ ${p} == "-h" || ${p} == "--help" ]] ; then
           do_help=yes
-        elif [[ $p == "+C" || $p == "++copyright" ]] ; then
+        elif [[ ${p} == "+C" || ${p} == "++copyright" ]] ; then
           do_copyright="yes"
-        elif [[ $p == "+d" || $p == "++dark" ]] ; then
+        elif [[ ${p} == "+d" || ${p} == "++dark" ]] ; then
           do_color=dark
           context="+d"
-        elif [[ $p == "+l" || $p == "++light" ]] ; then
+        elif [[ ${p} == "+l" || ${p} == "++light" ]] ; then
           do_color=light
           context="+l"
-        elif [[ $p == "+n" || $p == "++no_color" ]] ; then
+        elif [[ ${p} == "+n" || ${p} == "++no_color" ]] ; then
           do_color=none
           context="+n"
-        elif [[ $p == "+Q" || $p == "++quiet" ]] ; then
+        elif [[ ${p} == "+Q" || ${p} == "++quiet" ]] ; then
           verbosity="quiet"
           verbose="+Q"
           verbose_common=
-        elif [[ $p == "+E" || $p == "++error" ]] ; then
+        elif [[ ${p} == "+E" || ${p} == "++error" ]] ; then
           verbosity="error"
           verbose="+E"
           verbose_common=
-        elif [[ $p == "+N" || $p == "++normal" ]] ; then
+        elif [[ ${p} == "+N" || ${p} == "++normal" ]] ; then
           verbosity=
           verbose="+N"
           verbose_common=
-        elif [[ $p == "+V" || $p == "++verbose" ]] ; then
+        elif [[ ${p} == "+V" || ${p} == "++verbose" ]] ; then
           verbosity="verbose"
           verbose="+V"
           verbose_common="-v"
-        elif [[ $p == "+D" || $p == "++debug" ]] ; then
+        elif [[ ${p} == "+D" || ${p} == "++debug" ]] ; then
           verbosity="debug"
           verbose="+D"
           verbose_common="-v"
-        elif [[ $p == "+F" || $p == "++line_first_no" ]] ; then
+        elif [[ ${p} == "+F" || ${p} == "++line_first_no" ]] ; then
           print_line_first="no"
-        elif [[ $p == "+L" || $p == "++line_last_no" ]] ; then
+        elif [[ ${p} == "+L" || ${p} == "++line_last_no" ]] ; then
           print_line_last="no"
-        elif [[ $p == "+v" || $p == "++version" ]] ; then
+        elif [[ ${p} == "+v" || ${p} == "++version" ]] ; then
           echo $version
           return 0
-        elif [[ $p == "-b" || $p == "--build" ]] ; then
+        elif [[ ${p} == "-b" || ${p} == "--build" ]] ; then
           grab_next=path_build
-        elif [[ $p == "-d" || $p == "--destination" ]] ; then
+        elif [[ ${p} == "-d" || ${p} == "--destination" ]] ; then
           grab_next=path_destination
-        elif [[ $p == "-i" || $p == "--individual" ]] ; then
+        elif [[ ${p} == "-i" || ${p} == "--individual" ]] ; then
           mode_individual="yes"
-        elif [[ $p == "-l" || $p == "--level" ]] ; then
+        elif [[ ${p} == "-l" || ${p} == "--level" ]] ; then
           mode_level="yes"
-        elif [[ $p == "-m" || $p == "--monolithic" ]] ; then
+        elif [[ ${p} == "-m" || ${p} == "--monolithic" ]] ; then
           mode_monolithic="yes"
-        elif [[ $p == "-P" || $p == "--prepend" ]] ; then
+        elif [[ ${p} == "-P" || ${p} == "--prepend" ]] ; then
           grab_next=prepend
-        elif [[ $p == "-p" || $p == "--program" ]] ; then
+        elif [[ ${p} == "-p" || ${p} == "--program" ]] ; then
           mode_program="yes"
-        elif [[ $p == "-s" || $p == "--sources" ]] ; then
+        elif [[ ${p} == "-s" || ${p} == "--sources" ]] ; then
           grab_next=path_sources
-        elif [[ $p == "-S" || $p == "--stand_alone" ]] ; then
+        elif [[ ${p} == "-S" || ${p} == "--stand_alone" ]] ; then
           grab_next=stand_alone
         elif [[ $operation == "" ]] ; then
-          operation="$p"
+          operation="${p}"
         elif [[ $operation_failure == "" ]] ; then
           operation_failure=fail-multiple
-          operation="$p"
+          operation="${p}"
         fi
       else
-        if [[ $grab_next == "path_build" ]] ; then
-          path_build=$(echo $p | sed -e 's|^//*|/|' -e 's|/*$|/|')
-        elif [[ $grab_next == "path_destination" ]] ; then
-          path_destination=$(echo $p | sed -e 's|^//*|/|' -e 's|/*$|/|')
-        elif [[ $grab_next == "path_sources" ]] ; then
-          path_sources=$(echo $p | sed -e 's|^//*|/|' -e 's|/*$|/|')
-        elif [[ $grab_next == "stand_alone" ]] ; then
+        if [[ ${grab_next} == "path_build" ]] ; then
+          path_build=$(echo ${p} | sed -e 's|^//*|/|' -e 's|/*$|/|')
+        elif [[ ${grab_next} == "path_destination" ]] ; then
+          path_destination=$(echo ${p} | sed -e 's|^//*|/|' -e 's|/*$|/|')
+        elif [[ ${grab_next} == "path_sources" ]] ; then
+          path_sources=$(echo ${p} | sed -e 's|^//*|/|' -e 's|/*$|/|')
+        elif [[ ${grab_next} == "stand_alone" ]] ; then
           mode_stand_alone="${mode_stand_alone}${p} "
-        elif [[ $grab_next == "prepend" ]] ; then
+        elif [[ ${grab_next} == "prepend" ]] ; then
 
           # Provide a bare minimal sanitizer that probably doesn't catch everything that it ideally should.
-          prepend=$(echo $p | sed -e 's|[\!~\`@#$%^&*();:><?/"\\]||g' -e 's@|@@g' -e "s|'||g" -e "s|\s*||g")
+          prepend=$(echo ${p} | sed -e 's|[\!~\`@#$%^&*();:><?/"\\]||g' -e 's@|@@g' -e "s|'||g" -e "s|\s*||g")
         fi
 
         grab_next=
@@ -159,29 +159,29 @@ package_main() {
     p=
   fi
 
-  if [[ $verbosity == "quiet" ]] ; then
+  if [[ ${verbosity} == "quiet" ]] ; then
     print_line_first="no"
     print_line_last="no"
   fi
 
   package_handle_colors
 
-  if [[ $do_help == "yes" ]] ; then
+  if [[ ${do_help} == "yes" ]] ; then
     package_help
     package_cleanup
 
     return 0
   fi
 
-  if [[ $do_copyright == "yes" ]] ; then
+  if [[ ${do_copyright} == "yes" ]] ; then
     package_copyright
     package_cleanup
 
     return 0
   fi
 
-  if [[ $operation_failure == "fail-multiple" ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+  if [[ ${operation_failure} == "fail-multiple" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Only one operation may be specified at a time.${c_reset}"
@@ -194,20 +194,20 @@ package_main() {
     return 1
   fi
 
-  if [[ $mode_stand_alone != "" ]] ; then
-    for i in $mode_stand_alone ; do
+  if [[ ${mode_stand_alone} != "" ]] ; then
+    for i in ${mode_stand_alone} ; do
 
-      if [[ $i == "all" ]] ; then
+      if [[ ${i} == "all" ]] ; then
         mode_stand_alone="all"
 
         break
       fi
 
-      if [[ ! -f build/stand_alone/$i.settings ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+      if [[ ! -f build/stand_alone/${i}.settings ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
-          echo -e "${c_error}ERROR: Unknown or unsupported stand alone program '${c_notice}$i${c_error}'.${c_reset}"
+          echo -e "${c_error}ERROR: Unknown or unsupported stand alone program '${c_notice}${i}${c_error}'.${c_reset}"
 
           package_print_last
         fi
@@ -218,22 +218,22 @@ package_main() {
       fi
     done
 
-    if [[ $mode_stand_alone == "all" ]] ; then
+    if [[ ${mode_stand_alone} == "all" ]] ; then
       mode_stand_alone=
 
       for i in build/stand_alone/*.settings ; do
 
-        mode_stand_alone="${mode_stand_alone}$(echo $i | sed -e 's|build/stand_alone/||' -e 's|\.settings$||') "
+        mode_stand_alone="${mode_stand_alone}$(echo ${i} | sed -e 's|build/stand_alone/||' -e 's|\.settings$||') "
       done
     fi
   fi
 
-  if [[ $operation == "build" || $operation == "rebuild" ]] ; then
-    if [[ ! -d $path_build ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+  if [[ ${operation} == "build" || ${operation} == "rebuild" ]] ; then
+    if [[ ! -d ${path_build} ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
-        echo -e "${c_error}ERROR: Build directory '${c_notice}$path_build${c_error}' is invalid or missing.${c_reset}"
+        echo -e "${c_error}ERROR: Build directory '${c_notice}${path_build}${c_error}' is invalid or missing.${c_reset}"
 
         package_print_last
       fi
@@ -243,14 +243,14 @@ package_main() {
       return 1
     fi
 
-    if [[ ! -d $path_destination ]] ; then
-      mkdir $verbose_common -p $path_destination
+    if [[ ! -d ${path_destination} ]] ; then
+      mkdir ${verbose_common} -p ${path_destination}
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
-          echo -e "${c_error}ERROR: Package directory '${c_notice}$path_destination${c_error}' is invalid or could not be created.${c_reset}"
+          echo -e "${c_error}ERROR: Package directory '${c_notice}${path_destination}${c_error}' is invalid or could not be created.${c_reset}"
 
           package_print_last
         fi
@@ -261,11 +261,11 @@ package_main() {
       fi
     fi
 
-    if [[ ! -d $path_sources ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+    if [[ ! -d ${path_sources} ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
-        echo -e "${c_error}ERROR: Sources directory '${c_notice}$path_sources${c_error}' is invalid or missing.${c_reset}"
+        echo -e "${c_error}ERROR: Sources directory '${c_notice}${path_sources}${c_error}' is invalid or missing.${c_reset}"
 
         package_print_last
       fi
@@ -276,7 +276,7 @@ package_main() {
     fi
 
     if [[ ! -d ${path_sources}level_0/ ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Build sources directory '${c_notice}${path_sources}level_0/${c_error}' is invalid or missing.${c_reset}"
@@ -290,7 +290,7 @@ package_main() {
     fi
 
     if [[ ! -d ${path_sources}level_1/ ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Build sources directory '${c_notice}${path_sources}level_1/${c_error}' is invalid or missing.${c_reset}"
@@ -304,7 +304,7 @@ package_main() {
     fi
 
     if [[ ! -d ${path_sources}level_2/ ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Build sources directory '${c_notice}${path_sources}level_2/${c_error}' is invalid or missing.${c_reset}"
@@ -318,7 +318,7 @@ package_main() {
     fi
 
     if [[ ! -d ${path_sources}level_3/ ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Build sources directory '${c_notice}${path_sources}level_3/${c_error}' is invalid or missing.${c_reset}"
@@ -331,7 +331,7 @@ package_main() {
       return 1
     fi
 
-    if [[ $operation == "rebuild" ]] ; then
+    if [[ ${operation} == "rebuild" ]] ; then
       package_operation_clean
 
       if [[ $? -ne 0 ]] ; then
@@ -339,11 +339,11 @@ package_main() {
       fi
     fi
 
-    if [[ $mode_individual == "" && $mode_level == "" && $mode_monolithic == "" && $mode_program == "" && $mode_stand_alone == "" ]] ; then
+    if [[ ${mode_individual} == "" && ${mode_level} == "" && ${mode_monolithic} == "" && ${mode_program} == "" && ${mode_stand_alone} == "" ]] ; then
       mode_individual="yes"
     fi
 
-    if [[ $failure == "" && $mode_individual == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && ${mode_individual} == "yes" ]] ; then
       package_operation_individual
 
       if [[ $? -ne 0 ]] ; then
@@ -351,7 +351,7 @@ package_main() {
       fi
     fi
 
-    if [[ $failure == "" && $mode_level == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && ${mode_level} == "yes" ]] ; then
       package_operation_level
 
       if [[ $? -ne 0 ]] ; then
@@ -359,7 +359,7 @@ package_main() {
       fi
     fi
 
-    if [[ $failure == "" && $mode_monolithic == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && ${mode_monolithic} == "yes" ]] ; then
       package_operation_monolithic
 
       if [[ $? -ne 0 ]] ; then
@@ -367,7 +367,7 @@ package_main() {
       fi
     fi
 
-    if [[ $failure == "" && $mode_program == "yes" ]] ; then
+    if [[ ${failure} -eq 0 && ${mode_program} == "yes" ]] ; then
       package_operation_program
 
       if [[ $? -ne 0 ]] ; then
@@ -375,16 +375,16 @@ package_main() {
       fi
     fi
 
-    if [[ $failure == "" && $mode_stand_alone != "" ]] ; then
+    if [[ ${failure} -eq 0 && ${mode_stand_alone} != "" ]] ; then
       package_operation_stand_alone
 
       if [[ $? -ne 0 ]] ; then
         failure=1
       fi
     fi
-  elif [[ $operation == "dependencies" ]] ; then
-    if [[ ! -d $path_sources ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+  elif [[ ${operation} == "dependencies" ]] ; then
+    if [[ ! -d ${path_sources} ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Sources directory '${c_notice}${path_sources}${c_error}' is invalid or missing.${c_reset}"
@@ -398,9 +398,9 @@ package_main() {
     fi
 
     package_operation_dependencies
-  elif [[ $operation == "clean" ]] ; then
-    if [[ ! -d $path_destination ]] ; then
-      if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+  elif [[ ${operation} == "clean" ]] ; then
+    if [[ ! -d ${path_destination} ]] ; then
+      if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
         package_print_first
 
         echo -e "${c_warning}WARNING: Package directory '${c_notice}${path_destination}${c_error}' does not exist, there is nothing to clean.${c_reset}"
@@ -414,8 +414,8 @@ package_main() {
     fi
 
     package_operation_clean
-  elif [[ $operation == "" ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+  elif [[ ${operation} == "" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: No operation was given.${c_reset}"
@@ -427,7 +427,7 @@ package_main() {
 
     return 1
   else
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: The operation ${c_notice}${operation}${c_error} was not recognized.${c_reset}"
@@ -440,19 +440,19 @@ package_main() {
     return 1
   fi
 
-  if [[ $verbosity != "quiet" ]] ; then
-    if [[ $failure != "" || $verbosity != "error" ]] ; then
+  if [[ ${verbosity} != "quiet" ]] ; then
+    if [[ ${failure} -eq 1 || ${verbosity} != "error" ]] ; then
       package_print_last
     fi
   fi
 
   package_cleanup
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_handle_colors() {
@@ -533,11 +533,11 @@ package_copyright() {
 
 package_create_base_files() {
 
-  if [[ ! -d $package ]] ; then
-    mkdir $verbose_common -p $package
+  if [[ ! -d ${package} ]] ; then
+    mkdir ${verbose_common} -p ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}${c_error}.${c_reset}"
@@ -547,8 +547,8 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure == "" && ! -d ${path_build}documents ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+  if [[ ${failure} -eq 0 && ! -d ${path_build}documents ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: The build directory ${c_notice}${path_build}documents${c_error} cannot be found or is invalid.${c_reset}"
@@ -557,26 +557,26 @@ package_create_base_files() {
     let failure=1
   fi
 
-  if [[ $failure == "" ]] ; then
-    cp $verbose_common -R ${path_build}documents $package
+  if [[ ${failure} -eq 0 ]] ; then
+    cp ${verbose_common} -R ${path_build}documents ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
-        echo -e "${c_error}ERROR: Failed to copy directory ${c_notice}${path_build}documents${c_error} to ${c_notice}$package${c_error}.${c_reset}"
+        echo -e "${c_error}ERROR: Failed to copy directory ${c_notice}${path_build}documents${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
       fi
 
       let failure=1
     fi
   fi
 
-  if [[ $failure == "" ]] ; then
+  if [[ ${failure} -eq 0 ]] ; then
     if [[ -d ${path_build}licenses ]] ; then
-      cp $verbose_common -R ${path_build}licenses $package
+      cp ${verbose_common} -R ${path_build}licenses ${package}
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to copy directory ${c_notice}${path_build}licenses${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -585,10 +585,10 @@ package_create_base_files() {
         let failure=1
       fi
     elif [[ -d ${path_build}../licenses ]] ; then
-      cp $verbose_common -R ${path_build}../licenses $package
+      cp ${verbose_common} -R ${path_build}../licenses ${package}
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to copy directory ${c_notice}${path_build}../licenses${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -597,7 +597,7 @@ package_create_base_files() {
         let failure=1
       fi
     else
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Neither directory ${c_notice}${path_build}licenses${c_error} nor ${c_notice}${path_build}../licenses${c_error} can be found or are invalid.${c_reset}"
@@ -607,11 +607,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure == "" ]] ; then
-    cp $verbose_common -R ${path_build}scripts/bootstrap.sh $package
+  if [[ ${failure} -eq 0 ]] ; then
+    cp ${verbose_common} -R ${path_build}scripts/bootstrap.sh ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy script ${c_notice}${path_build}bootstrap.sh${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -620,11 +620,11 @@ package_create_base_files() {
       let failure=1
     fi
 
-    if [[ $failure == "" ]] ; then
+    if [[ ${failure} -eq 0 ]] ; then
       chmod ugo+x ${package}bootstrap.sh
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to set executable permissions on script ${c_notice}${package}bootstrap.sh${c_error}.${c_reset}"
@@ -634,11 +634,11 @@ package_create_base_files() {
       fi
     fi
 
-    if [[ $failure == "" ]] ; then
-      cp $verbose_common -R ${path_build}scripts/install.sh $package
+    if [[ ${failure} -eq 0 ]] ; then
+      cp ${verbose_common} -R ${path_build}scripts/install.sh ${package}
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to copy script ${c_notice}${path_build}install.sh${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -648,11 +648,11 @@ package_create_base_files() {
       fi
     fi
 
-    if [[ $failure == "" ]] ; then
+    if [[ ${failure} -eq 0 ]] ; then
       chmod ugo+x ${package}install.sh
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to set executable permissions on script ${c_notice}${package}install.sh${c_error}.${c_reset}"
@@ -663,11 +663,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure != "" && ! -d ${package}build ]] ; then
-    mkdir $verbose_common -p ${package}build
+  if [[ ${failure} -eq 1 && ! -d ${package}build ]] ; then
+    mkdir ${verbose_common} -p ${package}build
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}build${c_error}.${c_reset}"
@@ -677,11 +677,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure != "" && ! -d ${package}sources ]] ; then
-    mkdir $verbose_common -p ${package}sources
+  if [[ ${failure} -eq 1 && ! -d ${package}sources ]] ; then
+    mkdir ${verbose_common} -p ${package}sources
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -691,11 +691,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure != "" && ! -d ${package}documents ]] ; then
-    mkdir $verbose_common -p ${package}documents
+  if [[ ${failure} -eq 1 && ! -d ${package}documents ]] ; then
+    mkdir ${verbose_common} -p ${package}documents
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}documents${c_error}.${c_reset}"
@@ -705,11 +705,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure != "" && ! -d ${package}licenses ]] ; then
-    mkdir $verbose_common -p ${package}licenses
+  if [[ ${failure} -eq 1 && ! -d ${package}licenses ]] ; then
+    mkdir ${verbose_common} -p ${package}licenses
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}licenses${c_error}.${c_reset}"
@@ -719,11 +719,11 @@ package_create_base_files() {
     fi
   fi
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_dependencies_individual() {
@@ -753,18 +753,18 @@ package_dependencies_individual() {
 
   for directory in ${path_sources}level_0/* ${path_sources}level_1/* ${path_sources}level_2/* ${path_sources}level_3/* ; do
 
-    name="$(echo $directory | sed -e "s|${path_sources}level_0/||" -e "s|${path_sources}level_1/||" -e "s|${path_sources}level_2/||" -e "s|${path_sources}level_3/||")"
+    name="$(echo ${directory} | sed -e "s|${path_sources}level_0/||" -e "s|${path_sources}level_1/||" -e "s|${path_sources}level_2/||" -e "s|${path_sources}level_3/||")"
 
-    level_current="$(echo $directory | grep -o '\<level_[[:digit:]]/' | sed -e 's|level_||' -e 's|/$||')"
+    level_current="$(echo ${directory} | grep -o '\<level_[[:digit:]]/' | sed -e 's|level_||' -e 's|/$||')"
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo -e "${c_highlight}Building Dependencies for ${c_reset}${c_notice}${name}${c_reset}${c_highlight}.${c_reset}"
     fi
 
     if [[ ! -d ${directory}/data/build/ ]] ; then
-      if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+      if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
         package_print_first
 
         echo -e "${c_warning}WARNING: The project build directory ${c_notice}${dependency_file}${c_warning} is not found.${c_reset}"
@@ -774,14 +774,14 @@ package_dependencies_individual() {
     fi
 
     # Additional dependency files are only supported in level_3.
-    if [[ $(echo "$directory" | grep -o "^${path_sources}level_3/") != "" ]] ; then
+    if [[ $(echo "${directory}" | grep -o "^${path_sources}level_3/") != "" ]] ; then
       dependency_files="yes"
 
       # When the files don't exist bash treats the pattern as a literal file.
       # Do not loop through this wild-carded name (a file with the unexpanded name 'dependencies.*' is therefore not supported).
       for dependency_file in ${directory}/data/build/dependencies.* ; do
 
-        if [[ "${directory}/data/build/dependencies.*" == $dependency_file ]] ; then
+        if [[ "${directory}/data/build/dependencies.*" == ${dependency_file} ]] ; then
           dependency_files="no"
         fi
 
@@ -793,16 +793,16 @@ package_dependencies_individual() {
 
     for dependency_file in ${directory}/data/build/dependencies{,.*} ; do
 
-      if [[ ! -f $dependency_file ]] ; then
+      if [[ ! -f ${dependency_file} ]] ; then
 
-        if [[ $dependency_files == "yes" && "${directory}/data/build/dependencies" != $dependency_file ]] ; then
-          if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+        if [[ $dependency_files == "yes" && "${directory}/data/build/dependencies" != ${dependency_file} ]] ; then
+          if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
             package_print_first
 
             echo -e "${c_warning}WARNING: The dependency file ${c_notice}${dependency_file}${c_warning} is not found.${c_reset}"
           fi
-        elif [[ $dependency_files == "no" && "${directory}/data/build/dependencies.*" != $dependency_file ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+        elif [[ $dependency_files == "no" && "${directory}/data/build/dependencies.*" != ${dependency_file} ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Cannot build dependencies, failed to find ${c_notice}${dependency_file}${c_error} file(s).${c_reset}"
@@ -812,14 +812,14 @@ package_dependencies_individual() {
         continue
       fi
 
-      if [[ $dependency_file == "${directory}/data/build/dependencies" ]] ; then
+      if [[ ${dependency_file} == "${directory}/data/build/dependencies" ]] ; then
         dependency_suffix=
       else
-        dependency_suffix=$(echo $dependency_file | sed -e "s|^${directory}/data/build/dependencies||")
+        dependency_suffix=$(echo ${dependency_file} | sed -e "s|^${directory}/data/build/dependencies||")
       fi
 
       if [[ ! -f ${directory}/data/build/settings${dependency_suffix} ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Cannot build dependencies for ${c_reset}${c_notice}${name}${c_reset}${c_error}, failed to find ${c_notice}${directory}/data/build/settings${dependency_suffix}${c_error}.${c_reset}"
@@ -838,7 +838,7 @@ package_dependencies_individual() {
       dependencies_individual=
       has_thread=
 
-      dependencies=$(cat $dependency_file | sed -e "/^\s*#/d" -e "s|#\.*$||")
+      dependencies=$(cat ${dependency_file} | sed -e "/^\s*#/d" -e "s|#\.*$||")
 
       if [[ $(echo "$dependencies" | grep -o "\<f_thread\>") != "" ]] ; then
         has_thread="yes"
@@ -846,14 +846,14 @@ package_dependencies_individual() {
 
       for dependency in $dependencies ; do
 
-        if [[ $(echo "$dependency" | grep -o "^f_") != "" ]] ; then
+        if [[ $(echo "${dependency}" | grep -o "^f_") != "" ]] ; then
           level=level_0
-        elif [[ $(echo "$dependency" | grep -o "^fl_") != "" ]] ; then
+        elif [[ $(echo "${dependency}" | grep -o "^fl_") != "" ]] ; then
           level=level_1
-        elif [[ $(echo "$dependency" | grep -o "^fll_") != "" ]] ; then
+        elif [[ $(echo "${dependency}" | grep -o "^fll_") != "" ]] ; then
           level=level_2
         else
-          if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+          if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
             package_print_first
 
             echo -e "${c_warning}WARNING: Failed to detect level for dependency ${c_notice}${dependency}${c_warning}.${c_reset}"
@@ -863,7 +863,7 @@ package_dependencies_individual() {
         fi
 
         if [[ ! -d ${path_sources}${level}/${dependency}/data/build/ ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Failed to find dependency data directory ${c_notice}${path_sources}${level}/${dependency}/data/build/${c_error}.${c_reset}"
@@ -881,12 +881,12 @@ package_dependencies_individual() {
 
         for sub_dependency in $sub_dependencies ; do
 
-          if [[ $(echo "$sub_dependency" | grep -o "^f_") != "" ]] ; then
+          if [[ $(echo "${sub_dependency}" | grep -o "^f_") != "" ]] ; then
             sub_level=level_0
-          elif [[ $(echo "$sub_dependency" | grep -o "^fl_") != "" ]] ; then
+          elif [[ $(echo "${sub_dependency}" | grep -o "^fl_") != "" ]] ; then
             sub_level=level_1
           else
-            if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+            if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
               package_print_first
 
               echo -e "${c_warning}WARNING: Failed to detect level for sub-dependency ${c_notice}${sub_dependency}${c_warning}.${c_reset}"
@@ -896,7 +896,7 @@ package_dependencies_individual() {
           fi
 
           if [[ ! -d ${path_sources}${sub_level}/${sub_dependency}/data/build/ ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to find dependency data directory ${c_notice}${path_sources}${sub_level}/${sub_dependency}/data/build/${c_error}.${c_reset}"
@@ -914,66 +914,66 @@ package_dependencies_individual() {
 
           for sub_sub_dependency in $sub_sub_dependencies ; do
 
-            if [[ $(echo "$sub_sub_dependency" | grep -o "^f_") != "" ]] ; then
+            if [[ $(echo "${sub_sub_dependency}" | grep -o "^f_") != "" ]] ; then
               sub_sub_level=level_0
             else
-              if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+              if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
                 package_print_first
 
-                echo -e "${c_warning}WARNING: Failed to detect level for sub-sub-dependency ${c_notice}$sub_sub_dependency${c_warning}.${c_reset}"
+                echo -e "${c_warning}WARNING: Failed to detect level for sub-sub-dependency ${c_notice}${sub_sub_dependency}${c_warning}.${c_reset}"
               fi
 
               continue
             fi
 
-            package_dependencies_individual_append "$sub_sub_level" "$sub_sub_dependency"
+            package_dependencies_individual_append "${sub_sub_level}" "${sub_sub_dependency}"
           done
 
-          if [[ $failure != "" ]] ; then
+          if [[ ${failure} -eq 1 ]] ; then
             break;
           fi
 
-          package_dependencies_individual_append "$sub_level" "$sub_dependency"
+          package_dependencies_individual_append "${sub_level}" "${sub_dependency}"
 
-          if [[ $failure != "" ]] ; then
+          if [[ ${failure} -eq 1 ]] ; then
             break;
           fi
         done
 
-        if [[ $failure != "" ]] ; then
+        if [[ ${failure} -eq 1 ]] ; then
           break;
         fi
 
-        package_dependencies_individual_append "$level" "$dependency"
+        package_dependencies_individual_append "${level}" "${dependency}"
 
-        if [[ $failure != "" ]] ; then
+        if [[ ${failure} -eq 1 ]] ; then
           break;
         fi
       done
 
-      if [[ $failure != "" ]] ; then
+      if [[ ${failure} -eq 1 ]] ; then
         break;
       fi
 
-      if [[ $failure != "" ]] ; then
+      if [[ ${failure} -eq 1 ]] ; then
         break;
       fi
 
-      dependencies_individual=$(echo "$dependencies_individual" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||' -e 's|[[:space:]][[:space:]]*$| |')
-      if [[ $dependencies_individual != "" ]] ; then
-        if [[ $verbosity == "verbose" ]] ; then
-          echo -e " $dependencies_individual"
+      dependencies_individual=$(echo "${dependencies_individual}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||' -e 's|[[:space:]][[:space:]]*$| |')
+      if [[ ${dependencies_individual} != "" ]] ; then
+        if [[ ${verbosity} == "verbose" ]] ; then
+          echo -e " ${dependencies_individual}"
         fi
 
-        dependencies_individual=" $dependencies_individual"
+        dependencies_individual=" ${dependencies_individual}"
       fi
 
       settings=${directory}/data/build/settings${dependency_suffix}
-      sed -i -e "s|^\s*build_libraries-individual[[:space:]].*\$|build_libraries-individual${dependencies_individual}|" $settings &&
-      sed -i -e "s|^\s*build_libraries-individual\$|build_libraries-individual${dependencies_individual}|" $settings
+      sed -i -e "s|^\s*build_libraries-individual[[:space:]].*\$|build_libraries-individual${dependencies_individual}|" ${settings} &&
+      sed -i -e "s|^\s*build_libraries-individual\$|build_libraries-individual${dependencies_individual}|" ${settings}
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to update settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -984,21 +984,21 @@ package_dependencies_individual() {
         break
       fi
 
-      if [[ $has_thread == "yes" && $dependencies_individual != "" && $(grep -o "^\s*build_libraries-individual_threadless\>" $settings) != "" ]] ; then
-        dependencies_individual_threadless=$(echo "$dependencies_individual" | sed -e "s| \-lf_thread\>||g")
+      if [[ $has_thread == "yes" && ${dependencies_individual} != "" && $(grep -o "^\s*build_libraries-individual_threadless\>" ${settings}) != "" ]] ; then
+        dependencies_individual_threadless=$(echo "${dependencies_individual}" | sed -e "s| \-lf_thread\>||g")
 
-        if [[ $verbosity == "verbose" ]] ; then
+        if [[ ${verbosity} == "verbose" ]] ; then
           package_print_first
 
-          echo -e " (threadless) $dependencies_individual_threadless"
+          echo -e " (threadless) ${dependencies_individual_threadless}"
         fi
 
         settings=${directory}/data/build/settings
-        sed -i -e "s|^\s*build_libraries-individual_threadless[[:space:]].*\$|build_libraries-individual_threadless${dependencies_individual_threadless}|" $settings &&
-        sed -i -e "s|^\s*build_libraries-individual_threadless\$|build_libraries-individual_threadless${dependencies_individual_threadless}|" $settings
+        sed -i -e "s|^\s*build_libraries-individual_threadless[[:space:]].*\$|build_libraries-individual_threadless${dependencies_individual_threadless}|" ${settings} &&
+        sed -i -e "s|^\s*build_libraries-individual_threadless\$|build_libraries-individual_threadless${dependencies_individual_threadless}|" ${settings}
 
         if [[ $? -ne 0 ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Failed to update settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1011,12 +1011,12 @@ package_dependencies_individual() {
       fi
 
       # All level 3 are expected to support all modes: individual, level, and monolithic.
-      if [[ $level_current == "3" ]] ; then
-        sed -i -e "s|^\s*build_libraries-level\>.*\$|build_libraries-level -lfll_2 -lfll_1 -lfll_0|" $settings &&
-        sed -i -e "s|^\s*build_libraries-level\$|build_libraries-level -lfll_2 -lfll_1 -lfll_0|" $settings
+      if [[ ${level_current} == "3" ]] ; then
+        sed -i -e "s|^\s*build_libraries-level\>.*\$|build_libraries-level -lfll_2 -lfll_1 -lfll_0|" ${settings} &&
+        sed -i -e "s|^\s*build_libraries-level\$|build_libraries-level -lfll_2 -lfll_1 -lfll_0|" ${settings}
 
         if [[ $? -ne 0 ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Failed to update settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1027,11 +1027,11 @@ package_dependencies_individual() {
           break
         fi
 
-        sed -i -e "s|^\s*build_libraries-monolithic\>.*\$|build_libraries-monolithic -lfll|" $settings &&
-        sed -i -e "s|^\s*build_libraries-monolithic\$|build_libraries-monolithic -lfll|" $settings
+        sed -i -e "s|^\s*build_libraries-monolithic\>.*\$|build_libraries-monolithic -lfll|" ${settings} &&
+        sed -i -e "s|^\s*build_libraries-monolithic\$|build_libraries-monolithic -lfll|" ${settings}
 
         if [[ $? -ne 0 ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Failed to update settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1044,16 +1044,16 @@ package_dependencies_individual() {
       fi
     done
 
-    if [[ $failure != "" ]] ; then
+    if [[ ${failure} -eq 1 ]] ; then
       break;
     fi
   done
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_dependencies_individual_append() {
@@ -1063,8 +1063,8 @@ package_dependencies_individual_append() {
   local libraries=
 
   settings=${path_sources}${level}/${dependency}/data/build/settings
-  if [[ ! -f $settings ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+  if [[ ! -f ${settings} ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to find dependency settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1075,58 +1075,58 @@ package_dependencies_individual_append() {
     return 1
   fi
 
-  libraries=$(grep -o '^\s*build_sources_library\s.*$' $settings | sed -e 's|^\s*build_sources_library\>||' -e 's|^\s*||' -e 's|\s*$||')
+  libraries=$(grep -o '^\s*build_sources_library\s.*$' ${settings} | sed -e 's|^\s*build_sources_library\>||' -e 's|^\s*||' -e 's|\s*$||')
 
   if [[ $libraries != "" ]] ; then
-    if [[ $(echo -n $dependencies_individual | grep -o "\-l$dependency\>") == "" ]] ; then
+    if [[ $(echo -n ${dependencies_individual} | grep -o "\-l${dependency}\>") == "" ]] ; then
 
       if [[ "$(type -p sort)" != "" ]] ; then
-        if [[ $level == "level_0" ]] ; then
-          dependencies_0="-l$dependency $dependencies_0"
-          dependencies_0="$(for i in $dependencies_0; do echo $i ; done | sort)"
-          dependencies_0=$(echo $dependencies_0)
-        elif [[ $level == "level_1" ]] ; then
-          dependencies_1="-l$dependency $dependencies_1"
-          dependencies_1=" $(for i in $dependencies_1; do echo $i ; done | sort)"
-          dependencies_1=$(echo $dependencies_1)
+        if [[ ${level} == "level_0" ]] ; then
+          dependencies_0="-l${dependency} ${dependencies_0}"
+          dependencies_0="$(for i in ${dependencies_0}; do echo ${i} ; done | sort)"
+          dependencies_0=$(echo ${dependencies_0})
+        elif [[ ${level} == "level_1" ]] ; then
+          dependencies_1="-l${dependency} ${dependencies_1}"
+          dependencies_1=" $(for i in ${dependencies_1}; do echo ${i} ; done | sort)"
+          dependencies_1=$(echo ${dependencies_1})
         else
-          dependencies_2="-l$dependency $dependencies_2"
-          dependencies_2=" $(for i in $dependencies_2; do echo $i ; done | sort)"
-          dependencies_2=$(echo $dependencies_2)
+          dependencies_2="-l${dependency} ${dependencies_2}"
+          dependencies_2=" $(for i in ${dependencies_2}; do echo ${i} ; done | sort)"
+          dependencies_2=$(echo ${dependencies_2})
         fi
       else
 
         # Sort is not available, so do not bother trying to sort.
-        if [[ $level == "level_0" ]] ; then
-          dependencies_0="-l$dependency $dependencies_0"
-        elif [[ $level == "level_1" ]] ; then
-          dependencies_1="-l$dependency $dependencies_1"
+        if [[ ${level} == "level_0" ]] ; then
+          dependencies_0="-l${dependency} ${dependencies_0}"
+        elif [[ ${level} == "level_1" ]] ; then
+          dependencies_1="-l${dependency} ${dependencies_1}"
         else
-          dependencies_2="-l$dependency $dependencies_2"
+          dependencies_2="-l${dependency} ${dependencies_2}"
         fi
       fi
 
       dependencies_individual=
 
-      if [[ $dependencies_0 != "" ]] ; then
-        dependencies_individual="$dependencies_0"
+      if [[ ${dependencies_0} != "" ]] ; then
+        dependencies_individual="${dependencies_0}"
       fi
 
-      if [[ $dependencies_1 != "" ]] ; then
-        dependencies_individual="$dependencies_1 $dependencies_individual"
+      if [[ ${dependencies_1} != "" ]] ; then
+        dependencies_individual="${dependencies_1} ${dependencies_individual}"
       fi
 
-      if [[ $dependencies_2 != "" ]] ; then
-        dependencies_individual="$dependencies_2 $dependencies_individual"
+      if [[ ${dependencies_2} != "" ]] ; then
+        dependencies_individual="${dependencies_2} ${dependencies_individual}"
       fi
     fi
   fi
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_dependencies_level() {
@@ -1140,19 +1140,19 @@ package_dependencies_level() {
 
   package_dependencies_level_update "level_0" ""
 
-  if [[ $failure == "" ]] ; then
+  if [[ ${failure} -eq 0 ]] ; then
     package_dependencies_level_update "level_1" " -lfll_0"
   fi
 
-  if [[ $failure == "" ]] ; then
+  if [[ ${failure} -eq 0 ]] ; then
     package_dependencies_level_update "level_2" " -lfll_1 -lfll_0"
   fi
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_dependencies_level_update() {
@@ -1167,19 +1167,19 @@ package_dependencies_level_update() {
   local monolithic_libraries_threaded=
   local monolithic_headers_threaded=
 
-  if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+  if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
     package_print_first_or_always
 
     echo -e "${c_highlight}Building Dependencies: ${c_notice}${level}${c_highlight}.${c_reset}"
   fi
 
-  for directory in $path_sources${level}/* ; do
+  for directory in ${path_sources}${level}/* ; do
 
-    name="$(echo $directory | sed -e "s|${path_sources}${level}/||")"
+    name="$(echo ${directory} | sed -e "s|${path_sources}${level}/||")"
 
     settings=${directory}/data/build/settings
-    if [[ ! -f $settings ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+    if [[ ! -f ${settings} ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to find settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1190,37 +1190,37 @@ package_dependencies_level_update() {
       return 1
     fi
 
-    libraries=$(grep -o '^\s*build_sources_library\s.*$' $settings | sed -e 's|^\s*build_sources_library\>||' -e 's|^\s*||' -e 's|\s*$||')
+    libraries=$(grep -o '^\s*build_sources_library\s.*$' ${settings} | sed -e 's|^\s*build_sources_library\>||' -e 's|^\s*||' -e 's|\s*$||')
 
     for library in $libraries ; do
 
-      if [[ $name == "f_thread" ]] ; then
-        level_sources_library_threaded="$level_sources_library_threaded $library"
-        monolithic_libraries_threaded="$monolithic_libraries_threaded ${level}/${library}"
+      if [[ ${name} == "f_thread" ]] ; then
+        level_sources_library_threaded="${level_sources_library_threaded} $library"
+        monolithic_libraries_threaded="${monolithic_libraries_threaded} ${level}/${library}"
       else
-        level_sources_library="$level_sources_library $library"
-        monolithic_libraries="$monolithic_libraries ${level}/${library}"
+        level_sources_library="${level_sources_library} $library"
+        monolithic_libraries="${monolithic_libraries} ${level}/${library}"
       fi
     done
 
-    headers=$(grep -o '^\s*build_sources_headers\s.*$' $settings | sed -e 's|^\s*build_sources_headers\>||' -e 's|^\s*||' -e 's|\s*$||')
+    headers=$(grep -o '^\s*build_sources_headers\s.*$' ${settings} | sed -e 's|^\s*build_sources_headers\>||' -e 's|^\s*||' -e 's|\s*$||')
 
     for header in $headers ; do
 
-      if [[ $name == "f_thread" ]] ; then
-        level_sources_headers_threaded="$level_sources_headers_threaded $header"
-        monolithic_headers_threaded="$monolithic_headers_threaded ${level}/${header}"
+      if [[ ${name} == "f_thread" ]] ; then
+        level_sources_headers_threaded="${level_sources_headers_threaded} $header"
+        monolithic_headers_threaded="${monolithic_headers_threaded} ${level}/${header}"
       else
-        level_sources_headers="$level_sources_headers $header"
-        monolithic_headers="$monolithic_headers ${level}/${header}"
+        level_sources_headers="${level_sources_headers} $header"
+        monolithic_headers="${monolithic_headers} ${level}/${header}"
       fi
     done
   done
 
   settings=${path_sources}/build/${level}/settings
 
-  if [[ ! -f $settings ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+  if [[ ! -f ${settings} ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to find settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1231,13 +1231,13 @@ package_dependencies_level_update() {
     return 1
   fi
 
-  sed -i -e "s|^\s*build_libraries-level\s.*\$|build_libraries-level${level_libraries}|" $settings &&
-  sed -i -e "s|^\s*build_libraries-level\$|build_libraries-level${level_libraries}|" $settings &&
-  sed -i -e "s|^\s*build_libraries-level_threadless\s.*\$|build_libraries-level_threadless${level_libraries}|" $settings &&
-  sed -i -e "s|^\s*build_libraries-level_threadless\$|build_libraries-level_threadless${level_libraries}|" $settings
+  sed -i -e "s|^\s*build_libraries-level\s.*\$|build_libraries-level${level_libraries}|" ${settings} &&
+  sed -i -e "s|^\s*build_libraries-level\$|build_libraries-level${level_libraries}|" ${settings} &&
+  sed -i -e "s|^\s*build_libraries-level_threadless\s.*\$|build_libraries-level_threadless${level_libraries}|" ${settings} &&
+  sed -i -e "s|^\s*build_libraries-level_threadless\$|build_libraries-level_threadless${level_libraries}|" ${settings}
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to update libraries for settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1248,19 +1248,19 @@ package_dependencies_level_update() {
     return 1
   fi
 
-  level_sources_library=$(echo "$level_sources_library" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-  if [[ $level_sources_library != "" ]] ; then
-    echo " $level_sources_library"
-    level_sources_library=" $level_sources_library"
+  level_sources_library=$(echo "${level_sources_library}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+  if [[ ${level_sources_library} != "" ]] ; then
+    echo " ${level_sources_library}"
+    level_sources_library=" ${level_sources_library}"
   fi
 
-  sed -i -e "s|^\s*build_sources_library\s.*\$|build_sources_library${level_sources_library}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library\$|build_sources_library${level_sources_library}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library-level\s.*\$|build_sources_library-level${level_sources_library_threaded}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library-level\$|build_sources_library-level${level_sources_library_threaded}|" $settings
+  sed -i -e "s|^\s*build_sources_library\s.*\$|build_sources_library${level_sources_library}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library\$|build_sources_library${level_sources_library}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library-level\s.*\$|build_sources_library-level${level_sources_library_threaded}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library-level\$|build_sources_library-level${level_sources_library_threaded}|" ${settings}
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to update libraries for settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1271,19 +1271,19 @@ package_dependencies_level_update() {
     return 1
   fi
 
-  level_sources_headers=$(echo "$level_sources_headers" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-  if [[ $level_sources_headers != "" ]] ; then
-    echo " $level_sources_headers"
-    level_sources_headers=" $level_sources_headers"
+  level_sources_headers=$(echo "${level_sources_headers}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+  if [[ ${level_sources_headers} != "" ]] ; then
+    echo " ${level_sources_headers}"
+    level_sources_headers=" ${level_sources_headers}"
   fi
 
-  sed -i -e "s|^\s*build_sources_headers\s.*\$|build_sources_headers${level_sources_headers}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers\$|build_sources_headers${level_sources_headers}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers-level\s.*\$|build_sources_headers-level${level_sources_headers_threaded}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers-level\$|build_sources_headers-level${level_sources_headers_threaded}|" $settings
+  sed -i -e "s|^\s*build_sources_headers\s.*\$|build_sources_headers${level_sources_headers}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers\$|build_sources_headers${level_sources_headers}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers-level\s.*\$|build_sources_headers-level${level_sources_headers_threaded}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers-level\$|build_sources_headers-level${level_sources_headers_threaded}|" ${settings}
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to update headers for settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1294,24 +1294,24 @@ package_dependencies_level_update() {
     return 1
   fi
 
-  if [[ $level == "level_0" ]] ; then
-    level_0_libraries=$(echo "$monolithic_libraries" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_0_headers=$(echo "$monolithic_headers" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+  if [[ ${level} == "level_0" ]] ; then
+    level_0_libraries=$(echo "${monolithic_libraries}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_0_headers=$(echo "${monolithic_headers}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
 
-    level_0_libraries_threaded=$(echo "$monolithic_libraries_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_0_headers_threaded=$(echo "$monolithic_headers_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-  elif [[ $level == "level_1" ]] ; then
-    level_1_libraries=$(echo "$monolithic_libraries" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_1_headers=$(echo "$monolithic_headers" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_0_libraries_threaded=$(echo "${monolithic_libraries_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_0_headers_threaded=$(echo "${monolithic_headers_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+  elif [[ ${level} == "level_1" ]] ; then
+    level_1_libraries=$(echo "${monolithic_libraries}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_1_headers=$(echo "${monolithic_headers}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
 
-    level_1_libraries_threaded=$(echo "$monolithic_libraries_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_1_headers_threaded=$(echo "$monolithic_headers_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-  elif [[ $level == "level_2" ]] ; then
-    level_2_libraries=$(echo "$monolithic_libraries" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_2_headers=$(echo "$monolithic_headers" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_1_libraries_threaded=$(echo "${monolithic_libraries_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_1_headers_threaded=$(echo "${monolithic_headers_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+  elif [[ ${level} == "level_2" ]] ; then
+    level_2_libraries=$(echo "${monolithic_libraries}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_2_headers=$(echo "${monolithic_headers}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
 
-    level_2_libraries_threaded=$(echo "$monolithic_libraries_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
-    level_2_headers_threaded=$(echo "$monolithic_headers_threaded" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_2_libraries_threaded=$(echo "${monolithic_libraries_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
+    level_2_headers_threaded=$(echo "${monolithic_headers_threaded}" | sed -e 's|^[[:space:]]*||' -e 's|[[:space:]]*$||')
   fi
 
   return 0
@@ -1323,117 +1323,117 @@ package_dependencies_monolithic() {
   local monolithic_headers=""
   local monolithic_headers_threaded=""
 
-  if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+  if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
     package_print_first_or_always
 
     echo -e "${c_highlight}Building Dependencies: ${c_notice}monolithic${c_highlight}.${c_reset}"
   fi
 
-  if [[ $level_0_libraries != "" ]] ; then
-    monolithic_libraries="$level_0_libraries"
+  if [[ ${level_0_libraries} != "" ]] ; then
+    monolithic_libraries="${level_0_libraries}"
   fi
 
-  if [[ $level_0_libraries_threaded != "" ]] ; then
-    monolithic_libraries_threaded="$level_0_libraries_threaded"
+  if [[ ${level_0_libraries_threaded} != "" ]] ; then
+    monolithic_libraries_threaded="${level_0_libraries_threaded}"
   fi
 
-  if [[ $level_0_headers != "" ]] ; then
-    monolithic_headers="$level_0_headers"
+  if [[ ${level_0_headers} != "" ]] ; then
+    monolithic_headers="${level_0_headers}"
   fi
 
-  if [[ $level_0_headers_threaded != "" ]] ; then
-    monolithic_headers_threaded="$level_0_headers_threaded"
+  if [[ ${level_0_headers_threaded} != "" ]] ; then
+    monolithic_headers_threaded="${level_0_headers_threaded}"
   fi
 
-  if [[ $level_1_libraries != "" ]] ; then
-    if [[ $monolithic_libraries == "" ]] ; then
-      monolithic_libraries="$level_1_libraries"
+  if [[ ${level_1_libraries} != "" ]] ; then
+    if [[ ${monolithic_libraries} == "" ]] ; then
+      monolithic_libraries="${level_1_libraries}"
     else
-      monolithic_libraries="$monolithic_libraries $level_1_libraries"
+      monolithic_libraries="${monolithic_libraries} ${level_1_libraries}"
     fi
   fi
 
-  if [[ $level_1_libraries_threaded != "" ]] ; then
-    if [[ $monolithic_libraries_threaded == "" ]] ; then
-      monolithic_libraries_threaded="$level_1_libraries_threaded"
+  if [[ ${level_1_libraries_threaded} != "" ]] ; then
+    if [[ ${monolithic_libraries_threaded} == "" ]] ; then
+      monolithic_libraries_threaded="${level_1_libraries_threaded}"
     else
-      monolithic_libraries_threaded="$monolithic_libraries_threaded $level_1_libraries_threaded"
+      monolithic_libraries_threaded="${monolithic_libraries_threaded} ${level_1_libraries_threaded}"
     fi
   fi
 
-  if [[ $level_1_headers != "" ]] ; then
-    if [[ $monolithic_libraries == "" ]] ; then
-      monolithic_headers="$level_1_headers"
+  if [[ ${level_1_headers} != "" ]] ; then
+    if [[ ${monolithic_libraries} == "" ]] ; then
+      monolithic_headers="${level_1_headers}"
     else
-      monolithic_headers="$monolithic_headers $level_1_headers"
+      monolithic_headers="${monolithic_headers} ${level_1_headers}"
     fi
   fi
 
-  if [[ $level_1_headers_threaded != "" ]] ; then
-    if [[ $monolithic_libraries_threaded == "" ]] ; then
-      monolithic_headers_threaded="$level_1_headers_threaded"
+  if [[ ${level_1_headers_threaded} != "" ]] ; then
+    if [[ ${monolithic_libraries_threaded} == "" ]] ; then
+      monolithic_headers_threaded="${level_1_headers_threaded}"
     else
-      monolithic_headers_threaded="$monolithic_headers_threaded $level_1_headers_threaded"
+      monolithic_headers_threaded="${monolithic_headers_threaded} ${level_1_headers_threaded}"
     fi
   fi
 
-  if [[ $level_2_libraries != "" ]] ; then
-    if [[ $monolithic_libraries == "" ]] ; then
-      monolithic_libraries="$level_2_libraries"
+  if [[ ${level_2_libraries} != "" ]] ; then
+    if [[ ${monolithic_libraries} == "" ]] ; then
+      monolithic_libraries="${level_2_libraries}"
     else
-      monolithic_libraries="$monolithic_libraries $level_2_libraries"
+      monolithic_libraries="${monolithic_libraries} ${level_2_libraries}"
     fi
   fi
 
-  if [[ $level_2_libraries_threaded != "" ]] ; then
-    if [[ $monolithic_libraries_threaded == "" ]] ; then
-      monolithic_libraries_threaded="$level_2_libraries_threaded"
+  if [[ ${level_2_libraries_threaded} != "" ]] ; then
+    if [[ ${monolithic_libraries_threaded} == "" ]] ; then
+      monolithic_libraries_threaded="${level_2_libraries_threaded}"
     else
-      monolithic_libraries_threaded="$monolithic_libraries_threaded $level_2_libraries_threaded"
+      monolithic_libraries_threaded="${monolithic_libraries_threaded} ${level_2_libraries_threaded}"
     fi
   fi
 
-  if [[ $level_2_headers != "" ]] ; then
-    if [[ $monolithic_libraries == "" ]] ; then
-      monolithic_headers="$level_2_headers"
+  if [[ ${level_2_headers} != "" ]] ; then
+    if [[ ${monolithic_libraries} == "" ]] ; then
+      monolithic_headers="${level_2_headers}"
     else
-      monolithic_headers="$monolithic_headers $level_2_headers"
+      monolithic_headers="${monolithic_headers} ${level_2_headers}"
     fi
   fi
 
-  if [[ $level_2_headers_threaded != "" ]] ; then
-    if [[ $monolithic_libraries_threaded == "" ]] ; then
-      monolithic_headers_threaded="$level_2_headers_threaded"
+  if [[ ${level_2_headers_threaded} != "" ]] ; then
+    if [[ ${monolithic_libraries_threaded} == "" ]] ; then
+      monolithic_headers_threaded="${level_2_headers_threaded}"
     else
-      monolithic_headers_threaded="$monolithic_headers_threaded $level_2_headers_threaded"
+      monolithic_headers_threaded="${monolithic_headers_threaded} ${level_2_headers_threaded}"
     fi
   fi
 
   settings=${path_sources}/build/monolithic/settings
 
-  if [[ $monolithic_libraries != "" ]] ; then
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
-      echo " $monolithic_libraries"
+  if [[ ${monolithic_libraries} != "" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
+      echo " ${monolithic_libraries}"
     fi
 
-    monolithic_libraries=" $monolithic_libraries"
+    monolithic_libraries=" ${monolithic_libraries}"
   fi
 
-  if [[ $monolithic_libraries_threaded != "" ]] ; then
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
-      echo " (threaded) $monolithic_libraries_threaded"
+  if [[ ${monolithic_libraries_threaded} != "" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
+      echo " (threaded) ${monolithic_libraries_threaded}"
     fi
 
-    monolithic_libraries_threaded=" $monolithic_libraries_threaded"
+    monolithic_libraries_threaded=" ${monolithic_libraries_threaded}"
   fi
 
-  sed -i -e "s|^\s*build_sources_library\s.*\$|build_sources_library${monolithic_libraries}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library\$|build_sources_library${monolithic_libraries}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library-monolithic\s.*\$|build_sources_library-monolithic${monolithic_libraries_threaded}|" $settings &&
-  sed -i -e "s|^\s*build_sources_library-monolithic\$|build_sources_library-monolithic${monolithic_libraries_threaded}|" $settings
+  sed -i -e "s|^\s*build_sources_library\s.*\$|build_sources_library${monolithic_libraries}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library\$|build_sources_library${monolithic_libraries}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library-monolithic\s.*\$|build_sources_library-monolithic${monolithic_libraries_threaded}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_library-monolithic\$|build_sources_library-monolithic${monolithic_libraries_threaded}|" ${settings}
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to update libraries for settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1444,29 +1444,29 @@ package_dependencies_monolithic() {
     return 1
   fi
 
-  if [[ $monolithic_headers != "" ]] ; then
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
-      echo " $monolithic_headers"
+  if [[ ${monolithic_headers} != "" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
+      echo " ${monolithic_headers}"
     fi
 
-    monolithic_headers=" $monolithic_headers"
+    monolithic_headers=" ${monolithic_headers}"
   fi
 
-  if [[ $monolithic_headers_threaded != "" ]] ; then
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
-      echo " (threaded) $monolithic_headers_threaded"
+  if [[ ${monolithic_headers_threaded} != "" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
+      echo " (threaded) ${monolithic_headers_threaded}"
     fi
 
-    monolithic_headers_threaded=" $monolithic_headers_threaded"
+    monolithic_headers_threaded=" ${monolithic_headers_threaded}"
   fi
 
-  sed -i -e "s|^\s*build_sources_headers\s.*\$|build_sources_headers${monolithic_headers}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers\$|build_sources_headers${monolithic_headers}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers-monolithic\s.*\$|build_sources_headers-monolithic${monolithic_headers_threaded}|" $settings &&
-  sed -i -e "s|^\s*build_sources_headers-monolithic\$|build_sources_headers-monolithic${monolithic_headers_threaded}|" $settings
+  sed -i -e "s|^\s*build_sources_headers\s.*\$|build_sources_headers${monolithic_headers}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers\$|build_sources_headers${monolithic_headers}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers-monolithic\s.*\$|build_sources_headers-monolithic${monolithic_headers_threaded}|" ${settings} &&
+  sed -i -e "s|^\s*build_sources_headers-monolithic\$|build_sources_headers-monolithic${monolithic_headers_threaded}|" ${settings}
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to update headers for settings file ${c_notice}${settings}${c_error}.${c_reset}"
@@ -1483,15 +1483,15 @@ package_dependencies_monolithic() {
 package_operation_clean() {
   local i=
 
-  if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+  if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
     package_print_first_or_always
 
     echo -e "${c_highlight}Cleaning Package Directory '${c_reset}${c_notice}${path_destination}${c_reset}${c_highlight}'.${c_reset}"
   fi
 
-  if [[ $mode_individual == "yes" ]] ; then
+  if [[ ${mode_individual} == "yes" ]] ; then
     if [[ -d ${path_destination}individual ]] ; then
-      rm $verbose_common -Rf ${path_destination}individual
+      rm ${verbose_common} -Rf ${path_destination}individual
 
       if [[ $? -ne 0 ]] ; then
         let failure=1
@@ -1500,16 +1500,16 @@ package_operation_clean() {
       fi
     fi
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo "Cleaned '${path_destination}individual'."
     fi
   fi
 
-  if [[ $mode_level == "yes" ]] ; then
+  if [[ ${mode_level} == "yes" ]] ; then
     if [[ -d ${path_destination}level ]] ; then
-      rm $verbose_common -Rf ${path_destination}level
+      rm ${verbose_common} -Rf ${path_destination}level
 
       if [[ $? -ne 0 ]] ; then
         let failure=1
@@ -1518,16 +1518,16 @@ package_operation_clean() {
       fi
     fi
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo "Cleaned '${path_destination}level'."
     fi
   fi
 
-  if [[ $mode_monolithic == "yes" ]] ; then
+  if [[ ${mode_monolithic} == "yes" ]] ; then
     if [[ -d ${path_destination}monolithic ]] ; then
-      rm $verbose_common -Rf ${path_destination}monolithic
+      rm ${verbose_common} -Rf ${path_destination}monolithic
 
       if [[ $? -ne 0 ]] ; then
         let failure=1
@@ -1536,16 +1536,16 @@ package_operation_clean() {
       fi
     fi
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo "Cleaned '${path_destination}monolithic'."
     fi
   fi
 
-  if [[ $mode_program == "yes" ]] ; then
+  if [[ ${mode_program} == "yes" ]] ; then
     if [[ -d ${path_destination}program ]] ; then
-      rm $verbose_common -Rf ${path_destination}program
+      rm ${verbose_common} -Rf ${path_destination}program
 
       if [[ $? -ne 0 ]] ; then
         let failure=1
@@ -1554,20 +1554,20 @@ package_operation_clean() {
       fi
     fi
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo "Cleaned '${path_destination}program'."
     fi
   fi
 
-  if [[ $mode_stand_alone != "" ]] ; then
+  if [[ ${mode_stand_alone} != "" ]] ; then
     if [[ -d ${path_destination}stand_alone ]] ; then
 
-      for i in $mode_stand_alone ; do
+      for i in ${mode_stand_alone} ; do
 
         if [[ -d ${path_destination}stand_alone/${prepend}${i}-${version}/ ]] ; then
-          rm $verbose_common -Rf ${path_destination}stand_alone/${prepend}${i}-${version}/
+          rm ${verbose_common} -Rf ${path_destination}stand_alone/${prepend}${i}-${version}/
 
           if [[ $? -ne 0 ]] ; then
             let failure=1
@@ -1576,16 +1576,16 @@ package_operation_clean() {
           fi
         fi
 
-        if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+        if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
           package_print_first_or_always
 
           echo "Cleaned '${path_destination}stand_alone/${prepend}${i}-${version}/'."
         fi
       done
 
-      rmdir $verbose_common --ignore-fail-on-non-empty ${path_destination}stand_alone
+      rmdir ${verbose_common} --ignore-fail-on-non-empty ${path_destination}stand_alone
 
-      if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+      if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
         package_print_first_or_always
 
         echo "Cleaned '${path_destination}stand_alone'."
@@ -1599,13 +1599,13 @@ package_operation_clean() {
 package_operation_copy_package() {
 
   if [[ -d ${package}sources/data/ ]] ; then
-    cp $verbose_common -R ${package}sources/data ${package}
+    cp ${verbose_common} -R ${package}sources/data ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
-        echo -e "${c_error}ERROR: Failed to copy the data directory ${c_notice}${package}sources/data${c_error} to ${c_notice}$package${c_error}.${c_reset}"
+        echo -e "${c_error}ERROR: Failed to copy the data directory ${c_notice}${package}sources/data${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
       fi
 
       let failure=1
@@ -1613,10 +1613,10 @@ package_operation_copy_package() {
       return 1
     fi
 
-    rm $verbose_common -Rf ${package}sources/data
+    rm ${verbose_common} -Rf ${package}sources/data
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to remove directory ${c_notice}${package}sources/data${c_error}.${c_reset}"
@@ -1631,10 +1631,10 @@ package_operation_copy_package() {
   fi
 
   if [[ -d ${package}sources/documents/ ]] ; then
-    cp $verbose_common -R ${package}sources/documents/ ${package}
+    cp ${verbose_common} -R ${package}sources/documents/ ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to move sources documents directory ${c_notice}${path_sources}sources/documents${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1645,10 +1645,10 @@ package_operation_copy_package() {
       return 1
     fi
 
-    rm $verbose_common -Rf ${package}sources/documents/
+    rm ${verbose_common} -Rf ${package}sources/documents/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to remove sources documents directory ${c_notice}${path_sources}sources/documents${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1661,10 +1661,10 @@ package_operation_copy_package() {
   fi
 
   if [[ -d ${package}sources/licenses/ ]] ; then
-    cp $verbose_common -R ${package}sources/licenses/ ${package}
+    cp ${verbose_common} -R ${package}sources/licenses/ ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to move sources licenses directory ${c_notice}${path_sources}sources/licenses${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1675,10 +1675,10 @@ package_operation_copy_package() {
       return 1
     fi
 
-    rm $verbose_common -Rf ${package}sources/licenses/
+    rm ${verbose_common} -Rf ${package}sources/licenses/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to remove sources licenses directory ${c_notice}${path_sources}sources/licenses${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1691,10 +1691,10 @@ package_operation_copy_package() {
   fi
 
   if [[ -d ${package}sources/specifications/ ]] ; then
-    cp $verbose_common -R ${package}sources/specifications/ ${package}
+    cp ${verbose_common} -R ${package}sources/specifications/ ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to move sources specifications directory ${c_notice}${path_sources}sources/specifications${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1702,13 +1702,13 @@ package_operation_copy_package() {
 
       let failure=1
 
-      return $failure
+      return ${failure}
     fi
 
-    rm $verbose_common -Rf ${package}sources/specifications/
+    rm ${verbose_common} -Rf ${package}sources/specifications/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to remove sources specifications directory ${c_notice}${path_sources}sources/specifications${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1721,10 +1721,10 @@ package_operation_copy_package() {
   fi
 
   if [[ -d ${package}sources/tests/ ]] ; then
-    cp $verbose_common -R ${package}sources/tests/ ${package}
+    cp ${verbose_common} -R ${package}sources/tests/ ${package}
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to move sources tests directory ${c_notice}${path_sources}sources/tests${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1735,10 +1735,10 @@ package_operation_copy_package() {
       return 1
     fi
 
-    rm $verbose_common -Rf ${package}sources/tests/
+    rm ${verbose_common} -Rf ${package}sources/tests/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to remove sources tests directory ${c_notice}${path_sources}sources/tests${c_error} to ${c_notice}${package}${c_error}.${c_reset}"
@@ -1767,12 +1767,12 @@ package_operation_create_config_stubs() {
     return 0
   fi
 
-  if [[ $language == "c" && ! -f ${package}sources/c/config.c ]] ; then
+  if [[ ${language} == "c" && ! -f ${package}sources/c/config.c ]] ; then
     if [[ $(grep -soP '^\s*\bbuild_sources_program\b\s+\S' ${package}data/build/settings) != "" ]] ; then
       sed -i -E -e "s|^\s*\bbuild_sources_program\s+|&config.c |" ${package}data/build/settings
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to insert the config.c into ${c_notice}${package}data/build/settings${c_error}.${c_reset}"
@@ -1780,13 +1780,13 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     elif [[ $(grep -soP '^\s*\bbuild_sources_library\b\s+\S' ${package}data/build/settings) != "" ]] ; then
       sed -i -E -e "s|^\s*\bbuild_sources_library\s+|&config.c |" ${package}data/build/settings
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to insert the config.c into ${c_notice}${package}data/build/settings${c_error}.${c_reset}"
@@ -1794,7 +1794,7 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     fi
 
@@ -1803,7 +1803,7 @@ package_operation_create_config_stubs() {
       echo "#include \"config.h\"" >> ${package}sources/c/config.c
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create the config.c at ${c_notice}${package}sources/c/config.c${c_error}.${c_reset}"
@@ -1811,15 +1811,15 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     fi
-  elif [[ $language == "c++" && ! -f ${package}sources/c/config.cpp ]] ; then
+  elif [[ ${language} == "c++" && ! -f ${package}sources/c/config.cpp ]] ; then
     if [[ $(grep -soP '^\s*\bbuild_sources_program\b\s+\S' ${package}data/build/settings) != "" ]] ; then
       sed -i -E -e "s|^\s*\bbuild_sources_program\s+|&config.cpp |" ${package}data/build/settings
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to insert the config.cpp into ${c_notice}${package}data/build/settings${c_error}.${c_reset}"
@@ -1827,13 +1827,13 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     elif [[ $(grep -soP '^\s*\bbuild_sources_library\b\s+\S' ${package}data/build/settings) != "" ]] ; then
       sed -i -E -e "s|^\s*\bbuild_sources_library\s+|&config.cpp |" ${package}data/build/settings
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to insert the config.cpp into ${c_notice}${package}data/build/settings${c_error}.${c_reset}"
@@ -1841,7 +1841,7 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     fi
 
@@ -1850,7 +1850,7 @@ package_operation_create_config_stubs() {
       echo "#include \"config.h\"" >> ${package}sources/c++/config.cpp
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create the config.cpp at ${c_notice}${package}sources/c++/config.cpp${c_error}.${c_reset}"
@@ -1858,17 +1858,17 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     fi
   fi
 
-  if [[ ( $language == "c" && ! -f ${package}sources/c/config.h ) || ( $language == "c++" && ! -f ${package}sources/c++/config.h ) ]] ; then
+  if [[ ( ${language} == "c" && ! -f ${package}sources/c/config.h ) || ( ${language} == "c++" && ! -f ${package}sources/c++/config.h ) ]] ; then
     if [[ $(grep -soP '^\s*\bbuild_language\b\s+c\s*$' ${package}data/build/settings) != "" ]] ; then
       echo > ${package}sources/c/config.h
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create the config.cpp at ${c_notice}${package}sources/c/config.h${c_error}.${c_reset}"
@@ -1876,13 +1876,13 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     else
       echo > ${package}sources/c++/config.h
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create the config.cpp at ${c_notice}${package}sources/c++/config.h${c_error}.${c_reset}"
@@ -1890,7 +1890,7 @@ package_operation_create_config_stubs() {
 
         let failure=1
 
-        return $failure
+        return ${failure}
       fi
     fi
   fi
@@ -1908,14 +1908,14 @@ package_operation_dependencies() {
 
   package_dependencies_individual
 
-  if [[ $failure != "" ]] ; then
-    return $failure;
+  if [[ ${failure} -eq 1 ]] ; then
+    return ${failure};
   fi
 
   package_dependencies_level
 
-  if [[ $failure != "" ]] ; then
-    return $failure;
+  if [[ ${failure} -eq 1 ]] ; then
+    return ${failure};
   fi
 
   package_dependencies_monolithic
@@ -1929,25 +1929,25 @@ package_operation_individual() {
   local package=
 
   if [[ ! -d ${path_destination}individual ]] ; then
-    mkdir $verbose_common -p ${path_destination}individual
+    mkdir ${verbose_common} -p ${path_destination}individual
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${path_destination}individual${c_error}.${c_reset}"
       fi
 
-      return $failure
+      return ${failure}
     fi
   fi
 
   for directory in ${path_sources}level_0/* ${path_sources}level_1/* ${path_sources}level_2/* ; do
 
-    name="$(echo $directory | sed -e "s|${path_sources}level_0/||" -e "s|${path_sources}level_1/||" -e "s|${path_sources}level_2/||")"
+    name="$(echo ${directory} | sed -e "s|${path_sources}level_0/||" -e "s|${path_sources}level_1/||" -e "s|${path_sources}level_2/||")"
     package="${path_destination}individual/${prepend}${name}-${version}/"
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo -e "${c_highlight}Packaging Project${c_reset} (individual) ${c_notice}${prepend}${name}-${version}${c_reset}${c_highlight}.${c_reset}"
@@ -1955,10 +1955,10 @@ package_operation_individual() {
 
     package_create_base_files
 
-    cp $verbose_common -R $directory ${package}sources/
+    cp ${verbose_common} -R ${directory} ${package}sources/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy sources directory ${c_notice}${directory}${c_error} to ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -1971,16 +1971,16 @@ package_operation_individual() {
 
     package_operation_copy_package
 
-    if [[ $failure != "" ]] ; then
+    if [[ ${failure} -eq 1 ]] ; then
       break;
     fi
   done
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_operation_level() {
@@ -1991,17 +1991,17 @@ package_operation_level() {
 
   for level in level_0 level_1 level_2 ; do
 
-    name="fll-$level"
+    name="fll-${level}"
     package="${path_destination}level/${prepend}${name}-${version}/"
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo -e "${c_highlight}Packaging Project${c_reset} (level) ${c_notice}${prepend}${name}-${version}${c_reset}${c_highlight}.${c_reset}"
     fi
 
-    if [[ ! -d $path_build$level ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+    if [[ ! -d ${path_build}${level} ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Build settings directory ${c_notice}${path_build}${level}${c_error} is invalid or missing.${c_reset}"
@@ -2015,10 +2015,10 @@ package_operation_level() {
     package_create_base_files
 
     if [[ ! -d ${package}data/ ]] ; then
-      mkdir $verbose_common ${package}data/
+      mkdir ${verbose_common} ${package}data/
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}data${c_error}.${c_reset}"
@@ -2030,14 +2030,14 @@ package_operation_level() {
       fi
     fi
 
-    if [[ -d $path_build${level}/build ]] ; then
-      cp $verbose_common -R ${path_build}${level}/build ${package}data/
+    if [[ -d ${path_build}${level}/build ]] ; then
+      cp ${verbose_common} -R ${path_build}${level}/build ${package}data/
     else
-      cp $verbose_common -R ${path_build}${level} ${package}data/build
+      cp ${verbose_common} -R ${path_build}${level} ${package}data/build
     fi
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to move the directory ${c_notice}${path_build}${level}${c_error} as ${c_notice}${path_build}${level}build${c_error}.${c_reset}"
@@ -2049,10 +2049,10 @@ package_operation_level() {
     fi
 
     if [[ ! -d ${package}sources/ ]] ; then
-      mkdir $verbose_common ${package}sources/
+      mkdir ${verbose_common} ${package}sources/
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -2066,10 +2066,10 @@ package_operation_level() {
 
     for directory in ${path_sources}${level}/* ; do
 
-      cp $verbose_common -R ${directory}/* ${package}sources/
+      cp ${verbose_common} -R ${directory}/* ${package}sources/
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to copy files from sources directory ${c_notice}${directory}${c_error} to ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -2080,10 +2080,10 @@ package_operation_level() {
         break
       fi
 
-      rm $verbose_common -Rf ${package}sources/data/build/
+      rm ${verbose_common} -Rf ${package}sources/data/build/
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to remove directory ${c_notice}${package}sources/data/build${c_error}.${c_reset}"
@@ -2095,21 +2095,21 @@ package_operation_level() {
 
       package_operation_copy_package
 
-      if [[ $failure != "" ]] ; then
+      if [[ ${failure} -eq 1 ]] ; then
         break;
       fi
     done
 
-    if [[ $failure != "" ]] ; then
+    if [[ ${failure} -eq 1 ]] ; then
       break;
     fi
   done
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_operation_monolithic() {
@@ -2123,14 +2123,14 @@ package_operation_monolithic() {
   name="fll"
   package="${path_destination}monolithic/${prepend}${name}-${version}/"
 
-  if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+  if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
     package_print_first_or_always
 
     echo -e "${c_highlight}Packaging Project${c_reset} (monolithic) ${c_notice}${prepend}${name}-${version}${c_reset}${c_highlight}.${c_reset}"
   fi
 
   if [[ ! -d ${path_build}monolithic ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Build settings directory ${c_notice}${path_build}monolithic${c_error} is invalid or missing.${c_reset}"
@@ -2144,10 +2144,10 @@ package_operation_monolithic() {
   package_create_base_files
 
   if [[ ! -d ${package}data/ ]] ; then
-    mkdir $verbose_common ${package}data/
+    mkdir ${verbose_common} ${package}data/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}data${c_error}.${c_reset}"
@@ -2160,13 +2160,13 @@ package_operation_monolithic() {
   fi
 
   if [[ -d ${path_build}monolithic/build ]] ; then
-    cp $verbose_common -R ${path_build}monolithic/build ${package}data
+    cp ${verbose_common} -R ${path_build}monolithic/build ${package}data
   else
-    cp $verbose_common -R ${path_build}monolithic ${package}data/build
+    cp ${verbose_common} -R ${path_build}monolithic ${package}data/build
   fi
 
   if [[ $? -ne 0 ]] ; then
-    if [[ $verbosity != "quiet" ]] ; then
+    if [[ ${verbosity} != "quiet" ]] ; then
       package_print_first
 
       echo -e "${c_error}ERROR: Failed to move the directory ${c_notice}${path_build}${level}${c_error} as ${c_notice}${path_build}${level}build${c_error}.${c_reset}"
@@ -2178,10 +2178,10 @@ package_operation_monolithic() {
   fi
 
   if [[ ! -d ${package}sources/ ]] ; then
-    mkdir $verbose_common ${package}sources/
+    mkdir ${verbose_common} ${package}sources/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -2194,10 +2194,10 @@ package_operation_monolithic() {
   fi
 
   if [[ ! -d ${package}tests/ ]] ; then
-    mkdir $verbose_common ${package}tests/
+    mkdir ${verbose_common} ${package}tests/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${package}tests${c_error}.${c_reset}"
@@ -2211,18 +2211,18 @@ package_operation_monolithic() {
 
   for level in level_0 level_1 level_2 ; do
 
-    for directory in $path_sources${level}/* ; do
+    for directory in ${path_sources}${level}/* ; do
 
-      for directory_sub in $directory/* ; do
+      for directory_sub in ${directory}/* ; do
 
-        path_name="$(basename $directory_sub)"
+        path_name="$(basename ${directory_sub})"
 
-        if [[ $path_name == "data" ]] ; then
-          if [[ ! -d ${package}data/$level ]] ; then
-            mkdir $verbose_common -p ${package}data/$level
+        if [[ ${path_name} == "data" ]] ; then
+          if [[ ! -d ${package}data/${level} ]] ; then
+            mkdir ${verbose_common} -p ${package}data/${level}
 
             if [[ $? -ne 0 ]] ; then
-              if [[ $verbosity != "quiet" ]] ; then
+              if [[ ${verbosity} != "quiet" ]] ; then
                 package_print_first
 
                 echo -e "${c_error}ERROR: Failed to create package data directory ${c_notice}${package}data/${level}${c_error}.${c_reset}"
@@ -2234,13 +2234,13 @@ package_operation_monolithic() {
             fi
           fi
 
-          cp $verbose_common -R $directory_sub ${package}sources/data
+          cp ${verbose_common} -R ${directory_sub} ${package}sources/data
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
-              echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/data$level${c_error}.${c_reset}"
+              echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/data${level}${c_error}.${c_reset}"
             fi
 
             let failure=1
@@ -2248,10 +2248,10 @@ package_operation_monolithic() {
             break
           fi
 
-          rm $verbose_common -Rf ${package}sources/data/build/
+          rm ${verbose_common} -Rf ${package}sources/data/build/
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to remove directory ${c_notice}${package}sources/data/build${c_error}.${c_reset}"
@@ -2263,10 +2263,10 @@ package_operation_monolithic() {
           fi
 
           if [[ "$(ls ${package}sources/data)" != "" ]] ; then
-            cp $verbose_common -R ${package}sources/data/* ${package}data/${level}
+            cp ${verbose_common} -R ${package}sources/data/* ${package}data/${level}
 
             if [[ $? -ne 0 ]] ; then
-              if [[ $verbosity != "quiet" ]] ; then
+              if [[ ${verbosity} != "quiet" ]] ; then
                 package_print_first
 
                 echo -e "${c_error}ERROR: Failed to copy the data directory ${c_notice}${package}sources/data/${level}/data${c_error} to ${c_notice}${package}data/${level}${c_error}.${c_reset}"
@@ -2278,10 +2278,10 @@ package_operation_monolithic() {
             fi
           fi
 
-          rm $verbose_common -Rf ${package}sources/data
+          rm ${verbose_common} -Rf ${package}sources/data
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to remove directory ${c_notice}${package}sources/data${c_error}.${c_reset}"
@@ -2291,11 +2291,11 @@ package_operation_monolithic() {
 
             break
           fi
-        elif [[ $path_name == "documents" ]] ; then
-          cp $verbose_common -R $directory_sub ${package}sources/
+        elif [[ ${path_name} == "documents" ]] ; then
+          cp ${verbose_common} -R ${directory_sub} ${package}sources/
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/documents${c_error}.${c_reset}"
@@ -2305,11 +2305,11 @@ package_operation_monolithic() {
 
             break
           fi
-        elif [[ $path_name == "licenses" ]] ; then
-          cp $verbose_common -R $directory_sub ${package}sources/
+        elif [[ ${path_name} == "licenses" ]] ; then
+          cp ${verbose_common} -R ${directory_sub} ${package}sources/
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/licenses${c_error}.${c_reset}"
@@ -2319,11 +2319,11 @@ package_operation_monolithic() {
 
             break
           fi
-        elif [[ $path_name == "specifications" ]] ; then
-          cp $verbose_common -R $directory_sub ${package}sources/
+        elif [[ ${path_name} == "specifications" ]] ; then
+          cp ${verbose_common} -R ${directory_sub} ${package}sources/
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/specifications${c_error}.${c_reset}"
@@ -2333,11 +2333,11 @@ package_operation_monolithic() {
 
             break
           fi
-        elif [[ $path_name == "tests" ]] ; then
-          cp $verbose_common -R $directory_sub ${package}
+        elif [[ ${path_name} == "tests" ]] ; then
+          cp ${verbose_common} -R ${directory_sub} ${package}
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to copy files from data directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}tests${c_error}.${c_reset}"
@@ -2349,10 +2349,10 @@ package_operation_monolithic() {
           fi
         else
           if [[ ! -d ${package}sources/${path_name}/${level} ]] ; then
-            mkdir $verbose_common -p ${package}sources/${path_name}/${level}
+            mkdir ${verbose_common} -p ${package}sources/${path_name}/${level}
 
             if [[ $? -ne 0 ]] ; then
-              if [[ $verbosity != "quiet" ]] ; then
+              if [[ ${verbosity} != "quiet" ]] ; then
                 package_print_first
 
                 echo -e "${c_error}ERROR: Failed to create package sources directory ${c_notice}${package}sources/${path_name}/${level}${c_error}.${c_reset}"
@@ -2364,10 +2364,10 @@ package_operation_monolithic() {
             fi
           fi
 
-          cp $verbose_common -R ${directory_sub}/* ${package}sources/${path_name}/${level}
+          cp ${verbose_common} -R ${directory_sub}/* ${package}sources/${path_name}/${level}
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to copy files from sources directory ${c_notice}${directory_sub}${c_error} to ${c_notice}${package}sources/${path_name}/${level}${c_error}.${c_reset}"
@@ -2380,17 +2380,17 @@ package_operation_monolithic() {
         fi
       done
 
-      if [[ $failure != "" ]] ; then
+      if [[ ${failure} -eq 1 ]] ; then
         break;
       fi
     done
 
-    if [[ $failure != "" ]] ; then
+    if [[ ${failure} -eq 1 ]] ; then
       break;
     fi
   done
 
-  if [[ $failure == "" ]] ; then
+  if [[ ${failure} -eq 0 ]] ; then
     package_operation_create_config_stubs
 
     if [[ $? -ne 0 ]] ; then
@@ -2398,11 +2398,11 @@ package_operation_monolithic() {
     fi
   fi
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_operation_program() {
@@ -2411,10 +2411,10 @@ package_operation_program() {
   local package=
 
   if [[ ! -d ${path_destination}program ]] ; then
-    mkdir $verbose_common -p ${path_destination}program
+    mkdir ${verbose_common} -p ${path_destination}program
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${path_destination}program${c_error}.${c_reset}"
@@ -2422,16 +2422,16 @@ package_operation_program() {
 
       package_cleanup
 
-      exit $failure
+      exit ${failure}
     fi
   fi
 
   for directory in ${path_sources}level_3/* ; do
 
-    name="$(echo $directory | sed -e "s|${path_sources}level_3/||")"
+    name="$(echo ${directory} | sed -e "s|${path_sources}level_3/||")"
     package="${path_destination}program/${prepend}${name}-${version}/"
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo -e "${c_highlight}Packaging Project${c_reset} (program) ${c_notice}${prepend}${name}-${version}${c_reset}${c_highlight}.${c_reset}"
@@ -2439,10 +2439,10 @@ package_operation_program() {
 
     package_create_base_files
 
-    cp $verbose_common -R $directory ${package}sources/
+    cp ${verbose_common} -R ${directory} ${package}sources/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy sources directory ${c_notice}${directory}${c_error} to ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -2462,11 +2462,11 @@ package_operation_program() {
     fi
   done
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_operation_stand_alone() {
@@ -2484,10 +2484,10 @@ package_operation_stand_alone() {
   local path_name_sub=
 
   if [[ ! -d ${path_destination}stand_alone ]] ; then
-    mkdir $verbose_common -p ${path_destination}stand_alone
+    mkdir ${verbose_common} -p ${path_destination}stand_alone
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to create directory ${c_notice}${path_destination}stand_alone${c_error}.${c_reset}"
@@ -2499,12 +2499,12 @@ package_operation_stand_alone() {
     fi
   fi
 
-  for name in $mode_stand_alone ; do
+  for name in ${mode_stand_alone} ; do
 
     directory="${path_sources}level_3/${name}"
     package="${path_destination}stand_alone/${prepend}${name}-${version}/"
 
-    if [[ $verbosity != "quiet" && $verbosity != "error" ]] ; then
+    if [[ ${verbosity} != "quiet" && ${verbosity} != "error" ]] ; then
       package_print_first_or_always
 
       echo -e "${c_highlight}Packaging Project${c_reset} (stand_alone) ${c_notice}${prepend}${name}-${version}${c_reset}${c_highlight}.${c_reset}"
@@ -2518,10 +2518,10 @@ package_operation_stand_alone() {
       break
     fi
 
-    cp $verbose_common -R $directory ${package}sources/
+    cp ${verbose_common} -R ${directory} ${package}sources/
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy sources directory ${c_notice}${directory}${c_error} to ${c_notice}${package}sources${c_error}.${c_reset}"
@@ -2540,10 +2540,10 @@ package_operation_stand_alone() {
       break
     fi
 
-    cp $verbose_common -R ${path_build}stand_alone/${name}.settings ${package}data/build/settings
+    cp ${verbose_common} -R ${path_build}stand_alone/${name}.settings ${package}data/build/settings
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy file ${c_notice}${path_build}stand_alone/${name}.settings${c_error} to ${c_notice}${package}data/build/settings${c_error}.${c_reset}"
@@ -2554,10 +2554,10 @@ package_operation_stand_alone() {
       break
     fi
 
-    cp $verbose_common -R ${path_build}stand_alone/${name}.fakefile ${package}data/build/fakefile
+    cp ${verbose_common} -R ${path_build}stand_alone/${name}.fakefile ${package}data/build/fakefile
 
     if [[ $? -ne 0 ]] ; then
-      if [[ $verbosity != "quiet" ]] ; then
+      if [[ ${verbosity} != "quiet" ]] ; then
         package_print_first
 
         echo -e "${c_error}ERROR: Failed to copy file ${c_notice}${path_build}stand_alone/${name}.fakefile${c_error} to ${c_notice}${package}data/build/fakefile${c_error}.${c_reset}"
@@ -2569,10 +2569,10 @@ package_operation_stand_alone() {
     fi
 
     if [[ ! -d ${package}sources/c/program/${name}/ ]] ; then
-      mkdir $verbose_common -p ${package}sources/c/program/$name/
+      mkdir ${verbose_common} -p ${package}sources/c/program/${name}/
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to create package sources directory ${c_notice}${package}sources/c/program/${name}/${c_error}.${c_reset}"
@@ -2591,7 +2591,7 @@ package_operation_stand_alone() {
 
       for path_sub in ${package}sources/${path_name}/* ; do
 
-        path_name_sub="$(basename $path_sub)"
+        path_name_sub="$(basename ${path_sub})"
 
         # Do not attempt copying into self.
         if [[ $path_name_sub == "program" ]] ; then
@@ -2599,10 +2599,10 @@ package_operation_stand_alone() {
         fi
 
         if [[ ! -d ${package}sources/${path_name}/program/${name}/ ]] ; then
-          mkdir $verbose_common -p ${package}sources/${path_name}/program/${name}/
+          mkdir ${verbose_common} -p ${package}sources/${path_name}/program/${name}/
 
           if [[ $? -ne 0 ]] ; then
-            if [[ $verbosity != "quiet" ]] ; then
+            if [[ ${verbosity} != "quiet" ]] ; then
               package_print_first
 
               echo -e "${c_error}ERROR: Failed to create package sources directory ${c_notice}${package}sources/${path_name}/program/${name}/${c_error}.${c_reset}"
@@ -2614,10 +2614,10 @@ package_operation_stand_alone() {
           fi
         fi
 
-        mv $verbose_common $path_sub ${package}sources/${path_name}/program/${name}/
+        mv ${verbose_common} ${path_sub} ${package}sources/${path_name}/program/${name}/
 
         if [[ $? -ne 0 ]] ; then
-          if [[ $verbosity != "quiet" ]] ; then
+          if [[ ${verbosity} != "quiet" ]] ; then
             package_print_first
 
             echo -e "${c_error}ERROR: Failed to move path ${c_notice}${path_sub}${c_error} to ${c_notice}${package}sources/${path_name}/program/${name}/${c_error}.${c_reset}"
@@ -2629,20 +2629,20 @@ package_operation_stand_alone() {
         fi
       done
 
-      if [[ $failure != "" ]] ; then
+      if [[ ${failure} -eq 1 ]] ; then
         break
       fi
     done
 
-    if [[ $failure != "" ]] ; then
+    if [[ ${failure} -eq 1 ]] ; then
       break
     fi
 
     if [[ -f ${path_build}stand_alone/${name}.config.h ]] ; then
-      cp $verbose_common -R ${path_build}stand_alone/${name}.config.h ${package}sources/c/config.h
+      cp ${verbose_common} -R ${path_build}stand_alone/${name}.config.h ${package}sources/c/config.h
 
       if [[ $? -ne 0 ]] ; then
-        if [[ $verbosity != "quiet" ]] ; then
+        if [[ ${verbosity} != "quiet" ]] ; then
           package_print_first
 
           echo -e "${c_error}ERROR: Failed to copy file ${c_notice}${path_build}stand_alone/config.h${c_error} to ${c_notice}${package}sources/c/${c_error}.${c_reset}"
@@ -2657,8 +2657,8 @@ package_operation_stand_alone() {
     if [[ -f ${package}data/build/dependencies ]] ; then
       packages=$(grep -soP '^\s*[^\s]+' ${package}data/build/dependencies | sed -e 's|^[[:space:]]*||g')
 
-      if [[ $packages != "" ]] ; then
-        for package_sub in $packages ; do
+      if [[ ${packages} != "" ]] ; then
+        for package_sub in ${packages} ; do
 
           if [[ -d ${path_sources}level_0/${package_sub}/ ]] ; then
             level=level_0
@@ -2676,18 +2676,18 @@ package_operation_stand_alone() {
 
           for directory_sub in ${directory_level}* ; do
 
-            path_name="$(basename $directory_sub)"
+            path_name="$(basename ${directory_sub})"
 
             # Skip directories that are not to be copied.
-            if [[ $path_name == "data" || $path_name == "documents" || $path_name == "licenses" || $path_name == "specifications" || $path_name == "tests" ]] ; then
+            if [[ ${path_name} == "data" || ${path_name} == "documents" || ${path_name} == "licenses" || ${path_name} == "specifications" || ${path_name} == "tests" ]] ; then
               continue
             fi
 
             if [[ ! -d ${package}sources/${path_name}/fll/${level}/ ]] ; then
-              mkdir $verbose_common -p ${package}sources/${path_name}/fll/${level}/
+              mkdir ${verbose_common} -p ${package}sources/${path_name}/fll/${level}/
 
               if [[ $? -ne 0 ]] ; then
-                if [[ $verbosity != "quiet" ]] ; then
+                if [[ ${verbosity} != "quiet" ]] ; then
                   package_print_first
 
                   echo -e "${c_error}ERROR: Failed to create package sources directory ${c_notice}${package}sources/${path_name}/fll/${level}/${c_error}.${c_reset}"
@@ -2699,10 +2699,10 @@ package_operation_stand_alone() {
               fi
             fi
 
-            cp $verbose_common -R ${directory_level}${path_name}/* ${package}sources/${path_name}/fll/${level}/
+            cp ${verbose_common} -R ${directory_level}${path_name}/* ${package}sources/${path_name}/fll/${level}/
 
             if [[ $? -ne 0 ]] ; then
-              if [[ $verbosity != "quiet" ]] ; then
+              if [[ ${verbosity} != "quiet" ]] ; then
                 package_print_first
 
                 echo -e "${c_error}ERROR: Failed to copy files from sources directory ${c_notice}${directory_level}${path_name}/${c_error} to ${c_notice}${package}sources/${path_name}/fll/${level}/${c_error}.${c_reset}"
@@ -2714,28 +2714,28 @@ package_operation_stand_alone() {
             fi
           done
 
-          if [[ $failure != "" ]] ; then
+          if [[ ${failure} -eq 1 ]] ; then
             break
           fi
         done
 
-        if [[ $failure != "" ]] ; then
+        if [[ ${failure} -eq 1 ]] ; then
           break
         fi
       fi
     fi
   done
 
-  if [[ $failure == "" ]] ; then
-    return 0
+  if [[ ${failure} -eq 1 ]] ; then
+    return 1
   fi
 
-  return 1
+  return 0
 }
 
 package_print_first() {
 
-  if [[ $print_line_first == "yes" ]] ; then
+  if [[ ${print_line_first} == "yes" ]] ; then
     echo
 
     print_line_first=
@@ -2744,11 +2744,11 @@ package_print_first() {
 
 package_print_first_or_always() {
 
-  if [[ $print_line_first == "yes" ]] ; then
+  if [[ ${print_line_first} == "yes" ]] ; then
     echo
 
     print_line_first=
-  elif [[ $print_line_first == "no" ]] ; then
+  elif [[ ${print_line_first} == "no" ]] ; then
     print_line_first=
   else
     echo
@@ -2757,7 +2757,7 @@ package_print_first_or_always() {
 
 package_print_last() {
 
-  if [[ $print_line_last == "yes" ]] ; then
+  if [[ ${print_line_last} == "yes" ]] ; then
     echo
   fi
 }