in break_line(), fix a problem where a line could be broken in the

middle of a multibyte character


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3022 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -316,6 +316,9 @@ CVS code -
 - text.c:
   do_enter()
 	- Don't update the edit window until we set placewewant. (DLR)
+  break_line()
+	- Fix a problem where a line could be broken in the middle of
+	  a multibyte character. (DLR)
   do_word_count()
 	- Rename to do_wordlinechar_count(), and expand to also count
 	  the number of lines and characters in the file or selection,

src/text.c

@@ -559,8 +559,8 @@ bool do_wrap(filestruct *line)
 
 #if !defined(DISABLE_HELP) || !defined(DISABLE_JUSTIFY) || !defined(DISABLE_WRAPPING)
 /* We are trying to break a chunk off line.  We find the last blank such
- * that the display length to there is at most goal + 1.  If there is no
- * such blank, then we find the first blank.  We then take the last
+ * that the display length to there is at most (goal + 1).  If there is
+ * no such blank, then we find the first blank.  We then take the last
  * blank in that group of blanks.  The terminating '\0' counts as a
  * blank, as does a '\n' if newline is TRUE. */
 ssize_t break_line(const char *line, ssize_t goal, bool newline)
@@ -575,9 +575,10 @@ ssize_t break_line(const char *line, ssize_t goal, bool newline)
     assert(line != NULL);
 
     while (*line != '\0' && goal >= 0) {
-	size_t pos = 0;
+	int pos;
 
-	line_len = parse_mbchar(line, NULL, &pos);
+	line_len = parse_mbchar(line, NULL, NULL);
+	pos = mbwidth(line);
 
 	if (is_blank_mbchar(line) || (newline && *line == '\n')) {
 	    blank_loc = cur_loc;
@@ -606,7 +607,7 @@ ssize_t break_line(const char *line, ssize_t goal, bool newline)
 		if (!found_blank)
 		    found_blank = TRUE;
 	    } else if (found_blank)
-		return cur_loc - line_len;
+		return move_mbleft(line, cur_loc);
 
 	    line += line_len;
 	    cur_loc += line_len;