From: Kevin Day <thekevinday@gmail.com>
Date: Sat, 25 Jun 2022 15:49:30 +0000 (-0500)
Subject: Update: White space function changes.
X-Git-Tag: 0.5.10~17
X-Git-Url: https://git.kevux.org/?a=commitdiff_plain;h=e0b16cff04fd1f1234d0e26a8ca50f0e256de99e;p=fll

Update: White space function changes.

Make the is white space functions accept "strict" to be more consistent with how other functions operation.
For the next development release I want to consider separate functions to avoid passing a boolean as a parameter to do this (for performance reasons).

This changes behavior in some cases and if I did something wrong then there will be a regression.
Look out for white space regressions specifically in the FSS programs.
---

diff --git a/level_0/f_fss/c/fss.c b/level_0/f_fss/c/fss.c
index 169acfe..8f7f03b 100644
--- a/level_0/f_fss/c/fss.c
+++ b/level_0/f_fss/c/fss.c
@@ -168,7 +168,7 @@ extern "C" {
       return status;
     }
 
-    status = f_fss_fail_utf_to_false(state, f_utf_is_whitespace(buffer.string + range.start, width_max));
+    status = f_fss_fail_utf_to_false(state, f_utf_is_whitespace(buffer.string + range.start, width_max, F_false));
 
     if (status == F_false) {
       status = f_fss_fail_utf_to_false(state, f_utf_is_control(buffer.string + range.start, width_max));
@@ -272,7 +272,7 @@ extern "C" {
         continue;
       }
 
-      status = f_fss_fail_utf_to_false(state, f_utf_is_whitespace(buffer.string + range->start, width_max));
+      status = f_fss_fail_utf_to_false(state, f_utf_is_whitespace(buffer.string + range->start, width_max, F_false));
 
       if (status == F_false) {
         status = f_fss_fail_utf_to_false(state, f_utf_is_control(buffer.string + range->start, width_max));
diff --git a/level_0/f_utf/c/private-utf_alphabetic.c b/level_0/f_utf/c/private-utf_alphabetic.c
index 5278f3e..c450433 100644
--- a/level_0/f_utf/c/private-utf_alphabetic.c
+++ b/level_0/f_utf/c/private-utf_alphabetic.c
@@ -44,7 +44,7 @@ extern "C" {
       return F_false;
     }
 
-    if (private_f_utf_character_is_whitespace(sequence)) {
+    if (private_f_utf_character_is_whitespace(sequence, F_true)) {
       return F_false;
     }
 
@@ -100,7 +100,7 @@ extern "C" {
       return F_false;
     }
 
-    if (private_f_utf_character_is_whitespace(sequence)) {
+    if (private_f_utf_character_is_whitespace(sequence, F_true)) {
       return F_false;
     }
 
@@ -156,7 +156,7 @@ extern "C" {
       return F_false;
     }
 
-    if (private_f_utf_character_is_whitespace(sequence)) {
+    if (private_f_utf_character_is_whitespace(sequence, F_true)) {
       return F_false;
     }
 
diff --git a/level_0/f_utf/c/private-utf_whitespace.c b/level_0/f_utf/c/private-utf_whitespace.c
index 0cd621d..6845e22 100644
--- a/level_0/f_utf/c/private-utf_whitespace.c
+++ b/level_0/f_utf/c/private-utf_whitespace.c
@@ -7,7 +7,7 @@ extern "C" {
 #endif
 
 #if !defined(_di_f_utf_character_is_whitespace_) || !defined(_di_f_utf_is_whitespace_)
-  f_status_t private_f_utf_character_is_whitespace(const f_utf_char_t sequence) {
+  f_status_t private_f_utf_character_is_whitespace(const f_utf_char_t sequence, const bool strict) {
 
     if (macro_f_utf_char_t_width_is(sequence) == 2) {
 
@@ -21,6 +21,18 @@ extern "C" {
 
     if (macro_f_utf_char_t_width_is(sequence) == 3) {
 
+      if (macro_f_utf_char_t_to_char_1(sequence) == 0xe1) {
+        if (strict) {
+
+          // Ogham: U+1680 (isn't whitespace but is technically considered one: ( )).
+          if (sequence == 0xe19a8000) {
+            return F_true;
+          }
+        }
+
+        return F_false;
+      }
+
       if (macro_f_utf_char_t_to_char_1(sequence) == 0xe2) {
 
         // General Punctuation: U+2000 to U+200A.
@@ -75,6 +87,18 @@ extern "C" {
   }
 #endif // !defined(_di_f_utf_character_is_whitespace_other_) || !defined(_di_f_utf_is_whitespace_other_)
 
+#if !defined(_di_f_utf_character_is_whitespace_zero_width_) || !defined(_di_f_utf_is_whitespace_zero_width_)
+  f_status_t private_f_utf_character_is_whitespace_zero_width(const f_utf_char_t sequence) {
+
+    // General Punctuation: U+200B (isn't whitespace but is intentended to be interpreted as one in certain circumstances).
+    if (sequence == 0xe2808b00) {
+      return F_true;
+    }
+
+    return F_false;
+  }
+#endif // !defined(_di_f_utf_character_is_whitespace_zero_width_) || !defined(_di_f_utf_is_whitespace_zero_width_)
+
 #ifdef __cplusplus
 } // extern "C"
 #endif
diff --git a/level_0/f_utf/c/private-utf_whitespace.h b/level_0/f_utf/c/private-utf_whitespace.h
index 8420c6b..4d1acc3 100644
--- a/level_0/f_utf/c/private-utf_whitespace.h
+++ b/level_0/f_utf/c/private-utf_whitespace.h
@@ -26,6 +26,9 @@ extern "C" {
  *
  * @param sequence
  *   The byte sequence to validate as a character.
+ * @param strict
+ *   When TRUE, include all appropriate characters by type as per Unicode.
+ *   When FALSE, non-white space characters that are treated as white space by Unicode are not treated as white space.
  *
  * @return
  *   F_true if a UTF-8 white space.
@@ -38,7 +41,7 @@ extern "C" {
  * @see f_utf_is_whitespace()
  */
 #if !defined(_di_f_utf_character_is_whitespace_) || !defined(_di_f_utf_is_whitespace_)
-  extern f_status_t private_f_utf_character_is_whitespace(const f_utf_char_t sequence) F_attribute_visibility_internal_d;
+  extern f_status_t private_f_utf_character_is_whitespace(const f_utf_char_t sequence, const bool strict) F_attribute_visibility_internal_d;
 #endif // !defined(_di_f_utf_character_is_whitespace_) || !defined(_di_f_utf_is_whitespace_)
 
 /**
@@ -89,6 +92,30 @@ extern "C" {
   extern f_status_t private_f_utf_character_is_whitespace_other(const f_utf_char_t sequence) F_attribute_visibility_internal_d;
 #endif // !defined(_di_f_utf_character_is_whitespace_other_) || !defined(_di_f_utf_is_whitespace_other_)
 
+/**
+ * Private implementation of f_utf_character_is_whitespace_zero_width().
+ *
+ * Intended to be shared to each of the different implementation variations.
+ *
+ * This expects the character width to be of at least size 2.
+ *
+ * @param sequence
+ *   The byte sequence to validate as a character.
+ *
+ * @return
+ *   F_true if a UTF-8 white space other.
+ *   F_false if not a UTF-8 white space other.
+ *
+ *   F_utf_fragment (with error bit) if character is a UTF-8 fragment.
+ *   F_utf_not (with error bit) if unicode is an invalid Unicode character.
+ *
+ * @see f_utf_character_is_whitespace_zero_width()
+ * @see f_utf_is_whitespace_zero_width()
+ */
+#if !defined(_di_f_utf_character_is_whitespace_zero_width_) || !defined(_di_f_utf_is_whitespace_zero_width_)
+  extern f_status_t private_f_utf_character_is_whitespace_zero_width(const f_utf_char_t sequence) F_attribute_visibility_internal_d;
+#endif // !defined(_di_f_utf_character_is_whitespace_zero_width_) || !defined(_di_f_utf_is_whitespace_zero_width_)
+
 #ifdef __cplusplus
 } // extern "C"
 #endif
diff --git a/level_0/f_utf/c/utf/is.c b/level_0/f_utf/c/utf/is.c
index f25f81a..e85c2db 100644
--- a/level_0/f_utf/c/utf/is.c
+++ b/level_0/f_utf/c/utf/is.c
@@ -396,7 +396,7 @@ extern "C" {
         return F_false;
       }
 
-      if (private_f_utf_character_is_whitespace(utf)) {
+      if (private_f_utf_character_is_whitespace(utf, F_true)) {
         return F_false;
       }
 
@@ -727,7 +727,7 @@ extern "C" {
 #endif // _di_f_utf_is_valid_
 
 #ifndef _di_f_utf_is_whitespace_
-  f_status_t f_utf_is_whitespace(const f_string_t sequence, const f_array_length_t width_max) {
+  f_status_t f_utf_is_whitespace(const f_string_t sequence, const f_array_length_t width_max, const bool strict) {
     #ifndef _di_level_0_parameter_checking_
       if (width_max < 1) return F_status_set_error(F_parameter);
     #endif // _di_level_0_parameter_checking_
@@ -748,7 +748,7 @@ extern "C" {
         if (F_status_is_error(status)) return status;
       }
 
-      return private_f_utf_character_is_whitespace(utf);
+      return private_f_utf_character_is_whitespace(utf, strict);
     }
 
     if (isspace(*sequence)) return F_true;
@@ -817,6 +817,36 @@ extern "C" {
   }
 #endif // _di_f_utf_is_whitespace_other_
 
+#ifndef _di_f_utf_is_whitespace_zero_width_
+  f_status_t f_utf_is_whitespace_zero_width(const f_string_t sequence, const f_array_length_t width_max) {
+    #ifndef _di_level_0_parameter_checking_
+      if (width_max < 1) return F_status_set_error(F_parameter);
+    #endif // _di_level_0_parameter_checking_
+
+    if (macro_f_utf_byte_width_is(*sequence)) {
+      if (macro_f_utf_byte_width_is(*sequence) > width_max) {
+        return F_status_set_error(F_complete_not_utf);
+      }
+
+      if (macro_f_utf_byte_width_is(*sequence) == 1) {
+        return F_status_set_error(F_utf_fragment);
+      }
+
+      f_utf_char_t utf = 0;
+
+      {
+        const f_status_t status = private_f_utf_char_to_character(sequence, width_max, &utf);
+        if (F_status_is_error(status)) return status;
+      }
+
+      return private_f_utf_character_is_whitespace_zero_width(utf);
+    }
+
+    // There are no ASCII whitespace zero-width.
+    return F_false;
+  }
+#endif // _di_f_utf_is_whitespace_zero_width_
+
 #ifndef _di_f_utf_is_wide_
   f_status_t f_utf_is_wide(const f_string_t sequence, const f_array_length_t width_max) {
 
diff --git a/level_0/f_utf/c/utf/is.h b/level_0/f_utf/c/utf/is.h
index fa5339e..917b993 100644
--- a/level_0/f_utf/c/utf/is.h
+++ b/level_0/f_utf/c/utf/is.h
@@ -606,6 +606,9 @@ extern "C" {
  * @param width_max
  *   The maximum width available for checking.
  *   Can be anything greater than 0.
+ * @param strict
+ *   When TRUE, include all appropriate characters by type as per Unicode.
+ *   When FALSE, non-white space characters that are treated as white space by Unicode are not treated as white space.
  *
  * @return
  *   F_true if a UTF-8 white space.
@@ -620,7 +623,7 @@ extern "C" {
  * @see isspace()
  */
 #ifndef _di_f_utf_is_whitespace_
-  extern f_status_t f_utf_is_whitespace(const f_string_t sequence, const f_array_length_t width_max);
+  extern f_status_t f_utf_is_whitespace(const f_string_t sequence, const f_array_length_t width_max, const bool strict);
 #endif // _di_f_utf_is_whitespace_
 
 /**
@@ -639,8 +642,8 @@ extern "C" {
  *   Can be anything greater than 0.
  *
  * @return
- *   F_true if a UTF-8 white space.
- *   F_false if not a UTF-8 white space.
+ *   F_true if a UTF-8 (modifier) white space.
+ *   F_false if not a UTF-8 (modifier) white space.
  *
  *   F_complete_not_utf (with error bit set) if character is an incomplete UTF-8 sequence.
  *   F_maybe (with error bit) if this could be a white space but width is not long enough.
@@ -665,8 +668,8 @@ extern "C" {
  *   Can be anything greater than 0.
  *
  * @return
- *   F_true if a UTF-8 white space.
- *   F_false if not a UTF-8 white space.
+ *   F_true if a UTF-8 (other) white space.
+ *   F_false if not a UTF-8 (other) white space.
  *
  *   F_complete_not_utf (with error bit set) if character is an incomplete UTF-8 sequence.
  *   F_maybe (with error bit) if this could be a white space but width is not long enough.
@@ -679,6 +682,32 @@ extern "C" {
 #endif // _di_f_utf_is_whitespace_other_
 
 /**
+ * Check to see if the entire byte block of the character is an other type of UTF-8 space character.
+ *
+ * This is a list of white space that are actually zero-width space (which is not a space), such as Zero-Width Space (U+200B).
+ *
+ * @param sequence
+ *   The byte sequence to validate as a character.
+ *   There must be enough space allocated to compare against, as limited by width_max.
+ * @param width_max
+ *   The maximum width available for checking.
+ *   Can be anything greater than 0.
+ *
+ * @return
+ *   F_true if a UTF-8 (zero-width) white space.
+ *   F_false if not a UTF-8 (zero-width) white space.
+ *
+ *   F_complete_not_utf (with error bit set) if character is an incomplete UTF-8 sequence.
+ *   F_maybe (with error bit) if this could be a white space but width is not long enough.
+ *   F_parameter (with error bit) if a parameter is invalid.
+ *   F_utf_fragment (with error bit) if character is a UTF-8 fragment.
+ *   F_utf_not (with error bit) if Unicode is an invalid Unicode character.
+ */
+#ifndef _di_f_utf_is_whitespace_zero_width_
+  extern f_status_t f_utf_is_whitespace_zero_width(const f_string_t sequence, const f_array_length_t width_max);
+#endif // _di_f_utf_is_whitespace_zero_width_
+
+/**
  * Get whether or not the UTF-8 character is a wide character on display.
  *
  * This is not the wide as in width in bytes that the codepoint takes up in UTF-8.
diff --git a/level_0/f_utf/c/utf/is_character.c b/level_0/f_utf/c/utf/is_character.c
index 2a58183..30b958a 100644
--- a/level_0/f_utf/c/utf/is_character.c
+++ b/level_0/f_utf/c/utf/is_character.c
@@ -239,7 +239,7 @@ extern "C" {
         return F_false;
       }
 
-      if (private_f_utf_character_is_whitespace(sequence)) {
+      if (private_f_utf_character_is_whitespace(sequence, F_true)) {
         return F_false;
       }
 
@@ -438,14 +438,14 @@ extern "C" {
 #endif // _di_f_utf_character_is_valid_
 
 #ifndef _di_f_utf_character_is_whitespace_
-  f_status_t f_utf_character_is_whitespace(const f_utf_char_t sequence) {
+  f_status_t f_utf_character_is_whitespace(const f_utf_char_t sequence, const bool strict) {
 
     if (macro_f_utf_char_t_width_is(sequence)) {
       if (macro_f_utf_char_t_width_is(sequence) == 1) {
         return F_status_set_error(F_utf_fragment);
       }
 
-      return private_f_utf_character_is_whitespace(sequence);
+      return private_f_utf_character_is_whitespace(sequence, strict);
     }
 
     if (isspace(macro_f_utf_char_t_to_char_1(sequence))) {
@@ -488,6 +488,22 @@ extern "C" {
   }
 #endif // _di_f_utf_character_is_whitespace_other_
 
+#ifndef _di_f_utf_character_is_whitespace_zero_width_
+  f_status_t f_utf_character_is_whitespace_zero_width(const f_utf_char_t sequence) {
+
+    if (macro_f_utf_char_t_width_is(sequence)) {
+      if (macro_f_utf_char_t_width_is(sequence) == 1) {
+        return F_status_set_error(F_utf_fragment);
+      }
+
+      return private_f_utf_character_is_whitespace_zero_width(sequence);
+    }
+
+    // There are no ASCII whitespace zero-width.
+    return F_false;
+  }
+#endif // _di_f_utf_character_is_whitespace_zero_width_
+
 #ifndef _di_f_utf_character_is_wide_
   f_status_t f_utf_character_is_wide(const f_utf_char_t sequence) {
 
diff --git a/level_0/f_utf/c/utf/is_character.h b/level_0/f_utf/c/utf/is_character.h
index 56aa23c..4010a8e 100644
--- a/level_0/f_utf/c/utf/is_character.h
+++ b/level_0/f_utf/c/utf/is_character.h
@@ -518,6 +518,9 @@ extern "C" {
  *
  * @param sequence
  *   The byte sequence to validate as a character.
+ * @param strict
+ *   When TRUE, include all appropriate characters by type as per Unicode.
+ *   When FALSE, non-white space characters that are treated as white space by Unicode are not treated as white space.
  *
  * @return
  *   F_true if a UTF-8 white space.
@@ -529,7 +532,7 @@ extern "C" {
  * @see isspace()
  */
 #ifndef _di_f_utf_character_is_whitespace_
-  extern f_status_t f_utf_character_is_whitespace(const f_utf_char_t sequence);
+  extern f_status_t f_utf_character_is_whitespace(const f_utf_char_t sequence, const bool strict);
 #endif // _di_f_utf_character_is_whitespace_
 
 /**
@@ -544,8 +547,8 @@ extern "C" {
  *   The byte sequence to validate as a character.
  *
  * @return
- *   F_true if a UTF-8 modifier character.
- *   F_false if not a UTF-8 modifier character.
+ *   F_true if a UTF-8 (modifier) white space character.
+ *   F_false if not a UTF-8 (modifier) white space character.
  *
  *   F_utf_fragment (with error bit) if character is a UTF-8 fragment.
  *   F_utf_not (with error bit) if unicode is an invalid Unicode character.
@@ -568,14 +571,31 @@ extern "C" {
  *
  *   F_utf_fragment (with error bit) if character is a UTF-8 fragment.
  *   F_utf_not (with error bit) if unicode is an invalid Unicode character.
- *
- * @see isspace()
  */
 #ifndef _di_f_utf_character_is_whitespace_other_
   extern f_status_t f_utf_character_is_whitespace_other(const f_utf_char_t sequence);
 #endif // _di_f_utf_character_is_whitespace_other_
 
 /**
+ * Check to see if the entire byte block of the character is an other type of UTF-8 space character.
+ *
+ * This is a list of white space that are actually zero-width space (which is not a space), such as Zero-Width Space (U+200B).
+ *
+ * @param sequence
+ *   The byte sequence to validate as a character.
+ *
+ * @return
+ *   F_true if a UTF-8 (zero-width) white space.
+ *   F_false if not a UTF-8 (zero-width) white space.
+ *
+ *   F_utf_fragment (with error bit) if character is a UTF-8 fragment.
+ *   F_utf_not (with error bit) if unicode is an invalid Unicode character.
+ */
+#ifndef _di_f_utf_character_is_whitespace_zero_width_
+  extern f_status_t f_utf_character_is_whitespace_zero_width(const f_utf_char_t sequence);
+#endif // _di_f_utf_character_is_whitespace_zero_width_
+
+/**
  * Get whether or not the UTF-8 character is a wide character on display.
  *
  * This is not the wide as in width in bytes that the codepoint takes up in UTF-8.
diff --git a/level_1/fl_conversion/c/private-conversion.c b/level_1/fl_conversion/c/private-conversion.c
index 7fa6642..5d8439f 100644
--- a/level_1/fl_conversion/c/private-conversion.c
+++ b/level_1/fl_conversion/c/private-conversion.c
@@ -344,7 +344,7 @@ extern "C" {
         if (!mode && !vector) {
           width_max = length - i;
 
-          status = f_utf_is_whitespace(string + i, width_max);
+          status = f_utf_is_whitespace(string + i, width_max, F_false);
 
           if (status == F_true) {
             offset = i + 1;
@@ -501,7 +501,7 @@ extern "C" {
         if (!mode) {
           width_max = length - i;
 
-          status = f_utf_is_whitespace(string + i, width_max);
+          status = f_utf_is_whitespace(string + i, width_max, F_false);
 
           if (status == F_true) {
             offset = i + 1;
diff --git a/level_1/fl_print/c/private-print.c b/level_1/fl_print/c/private-print.c
index 29dfce5..7b82dcc 100644
--- a/level_1/fl_print/c/private-print.c
+++ b/level_1/fl_print/c/private-print.c
@@ -1236,7 +1236,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -1293,7 +1293,7 @@ extern "C" {
         }
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -1338,7 +1338,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, stop - j);
+          status = f_utf_is_whitespace(string + j, stop - j, F_false);
 
           if (F_status_is_error(status)) {
             if (F_status_set_fine(status) == F_maybe) {
@@ -1505,7 +1505,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
       if (F_status_is_error(status)) break;
 
       if (status == F_false) {
@@ -1548,7 +1548,7 @@ extern "C" {
         }
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -1585,7 +1585,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, stop - j);
+          status = f_utf_is_whitespace(string + j, stop - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
@@ -1711,7 +1711,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
       if (F_status_is_error(status)) break;
 
       if (status == F_false) {
@@ -1753,7 +1753,7 @@ extern "C" {
         }
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -1789,7 +1789,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, stop - j);
+          status = f_utf_is_whitespace(string + j, stop - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
@@ -1972,7 +1972,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
       if (F_status_is_error(status)) break;
 
       if (status == F_false) {
@@ -2015,7 +2015,7 @@ extern "C" {
         }
       }
 
-      status = f_utf_is_whitespace(string + i, stop - i);
+      status = f_utf_is_whitespace(string + i, stop - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -2052,7 +2052,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, stop - j);
+          status = f_utf_is_whitespace(string + j, stop - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
@@ -2206,7 +2206,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -2240,7 +2240,7 @@ extern "C" {
 
     while (i < length) {
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -2264,7 +2264,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, length - j);
+          status = f_utf_is_whitespace(string + j, length - j, F_false);
 
           if (F_status_is_error(status)) {
             if (F_status_set_fine(status) == F_maybe) {
@@ -2386,7 +2386,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       // Consider invalid data not-white space.
       if (F_status_is_error(status)) break;
@@ -2408,7 +2408,7 @@ extern "C" {
 
     while (i < length) {
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -2424,7 +2424,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, length - j);
+          status = f_utf_is_whitespace(string + j, length - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
@@ -2505,7 +2505,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       // Consider invalid data not-white space.
       if (F_status_is_error(status)) break;
@@ -2527,7 +2527,7 @@ extern "C" {
 
     while (i < length) {
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -2543,7 +2543,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, length - j);
+          status = f_utf_is_whitespace(string + j, length - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
@@ -2679,7 +2679,7 @@ extern "C" {
         continue;
       }
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
       if (F_status_is_error(status) || status == F_false) break;
 
       if (status == F_false) {
@@ -2699,7 +2699,7 @@ extern "C" {
 
     while (i < length) {
 
-      status = f_utf_is_whitespace(string + i, length - i);
+      status = f_utf_is_whitespace(string + i, length - i, F_false);
 
       // Determine if this is an end of string white space that needs to be trimmed.
       if (status == F_true || !string[i]) {
@@ -2715,7 +2715,7 @@ extern "C" {
             continue;
           }
 
-          status = f_utf_is_whitespace(string + j, length - j);
+          status = f_utf_is_whitespace(string + j, length - j, F_false);
           if (F_status_is_error(status)) break;
 
           if (status == F_false && string[j]) break;
diff --git a/level_1/fl_string/c/private-string.c b/level_1/fl_string/c/private-string.c
index acaaced..fdc2889 100644
--- a/level_1/fl_string/c/private-string.c
+++ b/level_1/fl_string/c/private-string.c
@@ -139,7 +139,7 @@ extern "C" {
 
       width_max = (stop1 - i1) + 1;
 
-      status = f_utf_is_whitespace(string1 + i1, width_max);
+      status = f_utf_is_whitespace(string1 + i1, width_max, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -187,7 +187,7 @@ extern "C" {
 
       width_max = (stop2 - i2) + 1;
 
-      status = f_utf_is_whitespace(string2 + i2, width_max);
+      status = f_utf_is_whitespace(string2 + i2, width_max, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -247,7 +247,7 @@ extern "C" {
 
         width_max = (stop1 - j) + 1;
 
-        status = f_utf_is_whitespace(string1 + j, width_max);
+        status = f_utf_is_whitespace(string1 + j, width_max, F_false);
 
         if (F_status_is_error(status)) {
           if (F_status_set_fine(status) == F_parameter) return status;
@@ -304,7 +304,7 @@ extern "C" {
 
         width_max = (stop2 - j) + 1;
 
-        status = f_utf_is_whitespace(string2 + j, width_max);
+        status = f_utf_is_whitespace(string2 + j, width_max, F_false);
 
         if (F_status_is_error(status)) {
           if (F_status_set_fine(status) == F_maybe) {
@@ -407,7 +407,7 @@ extern "C" {
       while (i1 < stop1 && !string1[i1]) ++i1;
       if (i1 == stop1) break;
 
-      status = f_utf_is_whitespace(string1 + i1, (stop1 - i1) + 1);
+      status = f_utf_is_whitespace(string1 + i1, (stop1 - i1) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -442,7 +442,7 @@ extern "C" {
       while (i2 < stop2 && !string2[i2]) ++i2;
       if (i2 == stop2) break;
 
-      status = f_utf_is_whitespace(string2 + i2, (stop2 - i2) + 1);
+      status = f_utf_is_whitespace(string2 + i2, (stop2 - i2) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -487,7 +487,7 @@ extern "C" {
         while (j < stop1 && !string1[j]) ++j;
         if (j == stop1) break;
 
-        status = f_utf_is_whitespace(string1 + j, (stop1 - j) + 1);
+        status = f_utf_is_whitespace(string1 + j, (stop1 - j) + 1, F_false);
 
         if (F_status_is_error(status)) {
           if (F_status_set_fine(status) == F_parameter) return status;
@@ -534,7 +534,7 @@ extern "C" {
         while (j < stop2 && !string2[j]) ++j;
         if (j == stop2) break;
 
-        status = f_utf_is_whitespace(string2 + j, (stop2 - j) + 1);
+        status = f_utf_is_whitespace(string2 + j, (stop2 - j) + 1, F_false);
 
         if (F_status_is_error(status)) {
           if (F_status_set_fine(status) == F_parameter) return status;
@@ -619,7 +619,7 @@ extern "C" {
       while (*start < *stop && !string[*start]) ++(*start);
       if (*start > *stop) break;
 
-      status = f_utf_is_whitespace(string + *start, (*stop - *start) + 1);
+      status = f_utf_is_whitespace(string + *start, (*stop - *start) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -671,7 +671,7 @@ extern "C" {
 
       if (*stop == *start) break;
 
-      status = f_utf_is_whitespace(string + *stop, (stop_original - *stop) + 1);
+      status = f_utf_is_whitespace(string + *stop, (stop_original - *stop) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
@@ -699,7 +699,7 @@ extern "C" {
     } // for
 
     if (*stop == *start) {
-      status = f_utf_is_whitespace(string + *stop, (stop_original - *stop) + 1);
+      status = f_utf_is_whitespace(string + *stop, (stop_original - *stop) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_parameter) return status;
diff --git a/level_1/fl_string/c/string.c b/level_1/fl_string/c/string.c
index df2ed08..76d16a7 100644
--- a/level_1/fl_string/c/string.c
+++ b/level_1/fl_string/c/string.c
@@ -449,7 +449,7 @@ extern "C" {
 
     f_array_length_t width_max = (range->stop - range->start) + 1;
 
-    while (buffer.string[range->start] == placeholder || (status = f_utf_is_whitespace(buffer.string + range->start, width_max)) == F_false) {
+    while (buffer.string[range->start] == placeholder || (status = f_utf_is_whitespace(buffer.string + range->start, width_max, F_false)) == F_false) {
 
       if (F_status_is_error(status)) return status;
 
@@ -598,7 +598,7 @@ extern "C" {
 
     for (; range->start <= range->stop; ) {
 
-      status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1);
+      status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -757,7 +757,7 @@ extern "C" {
 
     // The end of line, whitespace, or range stop point are the only valid stop points.
     if (range->start <= range->stop) {
-      status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1);
+      status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1, F_false);
 
       if (F_status_is_error(status)) {
         if (id) {
@@ -992,7 +992,7 @@ extern "C" {
 
     f_array_length_t width_max = (range->stop - range->start) + 1;
 
-    while (string[range->start] == placeholder || (status = f_utf_is_whitespace(string + range->start, width_max)) == F_false) {
+    while (string[range->start] == placeholder || (status = f_utf_is_whitespace(string + range->start, width_max, F_false)) == F_false) {
 
       if (F_status_is_error(status)) return status;
 
diff --git a/level_1/fl_utf/c/private-utf.c b/level_1/fl_utf/c/private-utf.c
index 81a6bdd..fa15a5e 100644
--- a/level_1/fl_utf/c/private-utf.c
+++ b/level_1/fl_utf/c/private-utf.c
@@ -52,7 +52,7 @@ extern "C" {
       while (i1 < stop1 && !string1[i1]) ++i1;
       if (i1 == stop1) break;
 
-      status = f_utf_character_is_whitespace(string1[i1]);
+      status = f_utf_character_is_whitespace(string1[i1], F_false);
 
       if (F_status_is_error(status)) {
 
@@ -72,7 +72,7 @@ extern "C" {
       while (i2 < stop2 && !string2[i2]) ++i2;
       if (i2 == stop2) break;
 
-      status = f_utf_character_is_whitespace(string2[i2]);
+      status = f_utf_character_is_whitespace(string2[i2], F_false);
 
       if (F_status_is_error(status)) {
 
@@ -101,7 +101,7 @@ extern "C" {
         while (j < stop1 && !string1[j]) ++j;
         if (j == stop1) break;
 
-        status = f_utf_character_is_whitespace(string1[j]);
+        status = f_utf_character_is_whitespace(string1[j], F_false);
 
         if (F_status_is_error(status)) {
           // ignore possibly invalid UTF-8 codes.
@@ -123,7 +123,7 @@ extern "C" {
         while (j < stop2 && !string2[j]) ++j;
         if (j == stop2) break;
 
-        status = f_utf_character_is_whitespace(string2[j]);
+        status = f_utf_character_is_whitespace(string2[j], F_false);
 
         if (F_status_is_error(status)) {
 
@@ -182,7 +182,7 @@ extern "C" {
       while (*start < *stop && !source[*start]) ++(*start);
       if (*start > *stop) break;
 
-      status = f_utf_character_is_whitespace(source[*start]);
+      status = f_utf_character_is_whitespace(source[*start], F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -203,7 +203,7 @@ extern "C" {
       if (!source[*stop]) continue;
       if (*stop == *start) break;
 
-      status = f_utf_character_is_whitespace(source[*stop]);
+      status = f_utf_character_is_whitespace(source[*stop], F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
@@ -217,7 +217,7 @@ extern "C" {
     } // for
 
     if (*stop == *start) {
-      status = f_utf_character_is_whitespace(source[*stop]);
+      status = f_utf_character_is_whitespace(source[*stop], F_false);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_maybe) {
diff --git a/level_1/fl_utf/c/utf.c b/level_1/fl_utf/c/utf.c
index cc1fd4b..364c74d 100644
--- a/level_1/fl_utf/c/utf.c
+++ b/level_1/fl_utf/c/utf.c
@@ -183,7 +183,7 @@ extern "C" {
       return F_status_set_error(F_utf_fragment);
     }
 
-    while (buffer.string[range->start] == placeholder || (status = f_utf_character_is_whitespace(buffer.string[range->start])) == F_false) {
+    while (buffer.string[range->start] == placeholder || (status = f_utf_character_is_whitespace(buffer.string[range->start], F_false)) == F_false) {
 
       if (F_status_is_error(status)) return status;
       if (buffer.string[range->start] == f_utf_char_t_eol_s) return F_none_eol;
diff --git a/level_2/fll_fss/c/fss.c b/level_2/fll_fss/c/fss.c
index b5fa053..d2f2b1f 100644
--- a/level_2/fll_fss/c/fss.c
+++ b/level_2/fll_fss/c/fss.c
@@ -76,7 +76,7 @@ extern "C" {
       return F_found_not;
     }
 
-    f_status_t status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1);
+    f_status_t status = f_utf_is_whitespace(buffer.string + range->start, (range->stop - range->start) + 1, F_false);
 
     if (F_status_is_error(status)) {
       if (F_status_set_fine(status) == F_maybe) {
diff --git a/level_3/byte_dump/c/private-byte_dump.c b/level_3/byte_dump/c/private-byte_dump.c
index 0c6ea3b..2d94f96 100644
--- a/level_3/byte_dump/c/private-byte_dump.c
+++ b/level_3/byte_dump/c/private-byte_dump.c
@@ -795,7 +795,7 @@ extern "C" {
           }
         }
       }
-      else if (f_utf_character_is_whitespace(sequence.string[i]) == F_true) {
+      else if (f_utf_character_is_whitespace(sequence.string[i], F_true) == F_true) {
         if (data->main->parameters.array[byte_dump_parameter_classic_e].result == f_console_result_found_e) {
           f_print_dynamic_raw(f_string_ascii_period_s, data->main->output.to.stream);
         }
diff --git a/level_3/utf8/c/private-utf8_codepoint.c b/level_3/utf8/c/private-utf8_codepoint.c
index ad09c7f..48adae3 100644
--- a/level_3/utf8/c/private-utf8_codepoint.c
+++ b/level_3/utf8/c/private-utf8_codepoint.c
@@ -203,7 +203,7 @@ extern "C" {
       status = F_space;
     }
     else if (macro_f_utf_byte_width_is(*unicode.string)) {
-      status = f_utf_is_whitespace(unicode.string, 4);
+      status = f_utf_is_whitespace(unicode.string, 4, F_true);
 
       if (F_status_is_error(status)) {
         if (F_status_set_fine(status) == F_complete_not_utf || F_status_set_fine(status) == F_utf_fragment) {
@@ -223,7 +223,7 @@ extern "C" {
     }
     else {
       if (unicode.string[0] < 0x30 || unicode.string[0] > (0x39 && unicode.string[0] < 0x41) || (unicode.string[0] > 0x46 && unicode.string[0] < 0x61) || unicode.string[0] > 0x66) {
-        status = f_utf_is_whitespace(unicode.string, 4);
+        status = f_utf_is_whitespace(unicode.string, 4, F_true);
 
         if (F_status_is_error(status)) {
           if (F_status_set_fine(status) == F_complete_not_utf || F_status_set_fine(status) == F_utf_fragment) {