Fossil

  const char *zLine, /* [in] The comment line being printed. */
  int index,         /* [in] The current character index being handled. */
  int maxChars,      /* [in] Optimization hint to abort before space found. */
  int *sumWidth      /* [out] Summated width of all characters to next space. */
){
  int cchUTF8, utf32, wcwidth = 0;
  int nextIndex = index;
  if( zLine[index]==0 ) return index;
  for(;;){
    char_info_utf8(&zLine[nextIndex],&cchUTF8,&utf32);
    nextIndex += cchUTF8;
    wcwidth += cli_wcwidth(utf32);
    if( zLine[nextIndex]==0 || fossil_isspace(zLine[nextIndex]) ||
        wcwidth>maxChars ){
      *sumWidth = wcwidth;