Bugfix: If the first character has a width greater than one then F_utf_fragment is...

A F_utf_fragment is incorrectly when writing a string that would use quotes and that first character has a width greater than one.

The code is incrementing the string by 1.
This should instead be incrementing by the character width.
The loop itself should increment by the character width as well.

This bug has been exposed by unit tests.

diff --git a/level_1/fl_fss/c/private-fss.c b/level_1/fl_fss/c/private-fss.c
index 6809e6a5215b6ceae25d9ea21b1ff0f412c2aa87..c07423af9e3cb3fada5ceb744118990e91eac2ef 100644 (file)
--- a/level_1/fl_fss/c/private-fss.c
+++ b/level_1/fl_fss/c/private-fss.c
@@ -1105,7 +1105,7 @@ extern "C" {
       // The start quote may or may not need to be delimited in this case.
       if (destination->string[input_start] == quote_char) {
 
-        for (i = input_start + 1; i <= range->stop && i < object.used; ++i) {
+        for (i = input_start + macro_f_utf_byte_width(object.string[input_start]); i <= range->stop && i < object.used; i += macro_f_utf_byte_width(object.string[i])) {
 
           if (state->interrupt) {
             state->interrupt((void *) state, internal);