less/dist/line.c

141 is_ascii_char(ch)
142 	LWCHAR ch;
144 	return (ch <= 0x7F);
287 			LWCHAR ch;
292 			ch = get_wchar(linebuf + from);
293 			if (!is_composing_char(ch) && !is_combining_char(prev_ch, ch))
294 				width = is_wide_char(ch) ? 2 : 1;
295 			prev_ch = ch;
419 pwidth(ch, a, prev_ch)
420 	LWCHAR ch;
426 	if (ch == '\b')
433 	if (!utf_mode || is_ascii_char(ch))
435 		if (control_char((char)ch))
446 		if (is_composing_char(ch) || is_combining_char(prev_ch, ch))
468 	if (is_wide_char(ch))
487 	LWCHAR ch = step_char(&p, -1, linebuf + lmargin);
497 		width = pwidth(ch, attr[curr], prev_ch);
501 		ch = prev_ch;
521 		LWCHAR ch = step_char(&p, -1, linebuf);
522 		if (IS_CSI_START(ch))
524 		if (!is_ansi_middle(ch))
534 is_ansi_end(ch)
535 	LWCHAR ch;
537 	if (!is_ascii_char(ch))
539 	return (strchr(end_ansi_chars, (char) ch) != NULL);
546 is_ansi_middle(ch)
547 	LWCHAR ch;
549 	if (!is_ascii_char(ch))
551 	if (is_ansi_end(ch))
553 	return (strchr(mid_ansi_chars, (char) ch) != NULL);
559 #define	STORE_CHAR(ch,a,rep,pos) \
561 		if (store_char((ch),(a),(rep),(pos))) return (1); \
565 store_char(ch, a, rep, pos)
566 	LWCHAR ch;
596 		if (!is_ansi_end(ch) && !is_ansi_middle(ch)) {
609 	else if (ctldisp == OPT_ONPLUS && IS_CSI_START(ch))
618 		w = pwidth(ch, a, prev_ch);
629 		cs = (char) ch;
842 do_append(ch, rep, pos)
843 	LWCHAR ch;
852 	if (ch == '\b')
867 			STORE_CHAR(ch, AT_NORMAL, NULL, pos);
887 		if (ch == prev_ch)
896 			if (ch == '_')
906 		} else if (ch == '_')
909 			ch = prev_ch;
918 		if (   is_composing_char(ch)
919 		    || is_combining_char(get_wchar(linebuf + curr), ch))
926 	if (ch == '\t')
940 	} else if ((!utf_mode || is_ascii_char(ch)) && control_char((char)ch))
943 		if (ctldisp == OPT_ON || (ctldisp == OPT_ONPLUS && IS_CSI_START(ch)))
948 			STORE_CHAR(ch, AT_NORMAL, rep, pos);
951 			STORE_PRCHAR((char) ch, pos);
953 	} else if (utf_mode && ctldisp != OPT_ON && is_ubin_char(ch))
957 		s = prutfchar(ch);
967 		STORE_CHAR(ch, a, rep, pos);