From 93c9cf008afa4011522c3af5a949ec695bb3eb5b Mon Sep 17 00:00:00 2001
From: Kevin Day <thekevinday@gmail.com>
Date: Fri, 3 Jun 2022 20:17:40 -0500
Subject: [PATCH] Bugfix: The print functions are not printing the last letter
 in certain cases.

The overflow check is testing against >= stop or length.
The equal sign is the problem here.
If the character ends on the stop point or the length, then a whole character would have been printed.
This is not an error and should not result in a return.

Changing >= to > fixes the problem.
Because of this, the additional width check is unnecessary.
---
 level_1/fl_print/c/private-print.c | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/level_1/fl_print/c/private-print.c b/level_1/fl_print/c/private-print.c
index 2df13ac..29dfce5 100644
--- a/level_1/fl_print/c/private-print.c
+++ b/level_1/fl_print/c/private-print.c
@@ -1411,7 +1411,7 @@ extern "C" {
             continue;
           }
 
-          if (macro_f_utf_byte_width(string[i]) > 1 && i + macro_f_utf_byte_width(string[i]) >= stop) {
+          if (i + macro_f_utf_byte_width(string[i]) > stop) {
             return F_status_set_error(F_complete_not_utf_stop);
           }
 
@@ -1441,7 +1441,7 @@ extern "C" {
         return status;
       }
 
-      if (i + macro_f_utf_byte_width(string[i]) >= stop) {
+      if (i + macro_f_utf_byte_width(string[i]) > stop) {
         return F_status_set_error(F_complete_not_utf_stop);
       }
 
@@ -1849,7 +1849,7 @@ extern "C" {
             continue;
           }
 
-          if (i + macro_f_utf_byte_width(string[i]) >= stop) {
+          if (i + macro_f_utf_byte_width(string[i]) > stop) {
             if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
               return F_status_set_error(F_output);
             }
@@ -1899,7 +1899,7 @@ extern "C" {
         return status;
       }
 
-      if (status == F_false || i + macro_f_utf_byte_width(string[i]) >= stop) {
+      if (status == F_false || i + macro_f_utf_byte_width(string[i]) > stop) {
         if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
           return F_status_set_error(F_output);
         }
@@ -2112,7 +2112,7 @@ extern "C" {
             continue;
           }
 
-          if (i + macro_f_utf_byte_width(string[i]) >= stop) {
+          if (i + macro_f_utf_byte_width(string[i]) > stop) {
             if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
               return F_status_set_error(F_output);
             }
@@ -2158,7 +2158,7 @@ extern "C" {
         return status;
       }
 
-      if (status == F_false || i + macro_f_utf_byte_width(string[i]) >= stop) {
+      if (status == F_false || i + macro_f_utf_byte_width(string[i]) > stop) {
         if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
           return F_status_set_error(F_output);
         }
@@ -2317,7 +2317,7 @@ extern "C" {
             continue;
           }
 
-          if (i + macro_f_utf_byte_width(string[i]) >= length) {
+          if (i + macro_f_utf_byte_width(string[i]) > length) {
             return F_status_set_error(F_complete_not_utf_stop);
           }
 
@@ -2347,7 +2347,7 @@ extern "C" {
         return status;
       }
 
-      if (i + macro_f_utf_byte_width(string[i]) >= length) {
+      if (i + macro_f_utf_byte_width(string[i]) > length) {
         return F_status_set_error(F_complete_not_utf_stop);
       }
 
@@ -2544,8 +2544,9 @@ extern "C" {
           }
 
           status = f_utf_is_whitespace(string + j, length - j);
+          if (F_status_is_error(status)) break;
 
-          if (F_status_is_error(status) || (status == F_false && string[j])) break;
+          if (status == F_false && string[j]) break;
 
           // Search for the next non-NULL character and check if it is a combining character.
           if (status == F_true) {
@@ -2580,7 +2581,7 @@ extern "C" {
         // Print all processed white space (note: control characters are not white space so no checks for this are needed).
         while (i < j) {
 
-          if (i + macro_f_utf_byte_width(string[i]) >= length) {
+          if (i + macro_f_utf_byte_width(string[i]) > length) {
             if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
               return F_status_set_error(F_output);
             }
@@ -2630,7 +2631,7 @@ extern "C" {
         return status;
       }
 
-      if (status == F_false || i + macro_f_utf_byte_width(string[i]) >= length) {
+      if (status == F_false || i + macro_f_utf_byte_width(string[i]) > length) {
         if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
           return F_status_set_error(F_output);
         }
@@ -2752,7 +2753,7 @@ extern "C" {
         // Print all processed white space (note: control characters are not white space so no checks for this are needed).
         while (i < j) {
 
-          if (i + macro_f_utf_byte_width(string[i]) >= length) {
+          if (i + macro_f_utf_byte_width(string[i]) > length) {
             if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
               return F_status_set_error(F_output);
             }
@@ -2798,7 +2799,7 @@ extern "C" {
         return status;
       }
 
-      if (status == F_false || i + macro_f_utf_byte_width(string[i]) >= length) {
+      if (status == F_false || i + macro_f_utf_byte_width(string[i]) > length) {
         if (fwrite_unlocked(f_print_sequence_unknown_s.string, 1, f_print_sequence_unknown_s.used, stream) < f_print_sequence_unknown_s.used) {
           return F_status_set_error(F_output);
         }
-- 
1.8.3.1