From 3aa0d464fde753af26341d0c1a8740e756818582 Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Sat, 21 Dec 2024 03:59:23 -0500
Subject: inverse special hilight for multibyte specials

---
 uxd.c | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/uxd.c b/uxd.c
index 03cd6e8..180de80 100644
--- a/uxd.c
+++ b/uxd.c
@@ -67,7 +67,8 @@ extern int optind;
 #define HL_NORMAL 0
 #define HL_NORM_INV 1
 #define HL_SPECIAL 2
-#define HL_BAD 3
+#define HL_SPEC_INV 3
+#define HL_BAD 4
 
 /* terminal codes for mono highlighting. */
 #define MONO_NORMAL 0
@@ -123,7 +124,7 @@ int filepos = 0;
 /* Unicode control character printable equivalents. For 0, use
    the "empty set" symbol. It's a lot more readable than the "nul"
    symbol, ␀. Escape, tab, newline, space are what urxvt uses in
-   its "keycap picture" mode. The rest of there are hard to read at
+   its "keycap picture" mode. The rest of these are hard to read at
    normal font sizes, but it's still better than using a dot for
    everything like xxd does. */
 char * const special_symbols[] = {
@@ -139,7 +140,7 @@ char * const special_symbols[] = {
 int alternate_colors = 1; /* -1 */
 int print_info_opt = 0;   /* -i */
 int bold = 0;         /* -b */
-int hilite_multi = 0; /* -r */
+int hilite_multi = 1; /* -r */
 int mono = 0;         /* -m */
 long display_offset = 0; /* -o */
 long seekpos = 0;     /* -s, -S */
@@ -305,7 +306,7 @@ void parse_args(int argc, char **argv) {
 				}
 				break;
 			case 'r':
-				hilite_multi = 1; break;
+				hilite_multi = 0; break;
 			case 'm':
 				mono = 1; break;
 			case 'o':
@@ -444,6 +445,10 @@ void append_color(char *buf, int hl_type) {
 			fgcolor = special_color;
 			bgcolor = 0;
 			break;
+		case HL_SPEC_INV:
+			fgcolor = 0;
+			bgcolor = special_color;
+			break;
 		case HL_BAD:
 		default:
 			fgcolor = 0;
@@ -471,6 +476,7 @@ void append_mono(char *buf, int hl_type) {
 			code = cur_normal_hilite ? MONO_UNDERLINE : MONO_NORMAL;
 			break;
 		case HL_SPECIAL:
+		case HL_SPEC_INV:
 			code = MONO_BOLD;
 			break;
 		default:
@@ -623,14 +629,14 @@ char *classify_char(int *hl, unsigned char *bytes, int cont_count) {
 	}
 
 	if(cont_count == 2 && is_bom(bytes)) {
-		*hl = HL_SPECIAL;
+		*hl = HL_SPEC_INV;
 		return PRINT_BOM;
 	}
 
 	if(is_overlong(cont_count, bytes)) {
 		/* java mode (MUTF-8) allows exactly one overlong: */
 		if(java_mode && cont_count == 1 && bytes[0] == 0xc0 && bytes[1] == 0x80) {
-			*hl = HL_SPECIAL; /* or should it be normal? */
+			*hl = HL_SPEC_INV;
 			return get_special(0);
 		} else if(permissive) {
 			*hl = HL_NORMAL;
@@ -642,7 +648,7 @@ char *classify_char(int *hl, unsigned char *bytes, int cont_count) {
 
 	if(is_surrogate(cont_count, bytes)) {
 		if(wtf8_mode || permissive) {
-			*hl = HL_SPECIAL;
+			*hl = HL_SPEC_INV;
 		} else {
 			*hl = HL_BAD;
 		}
@@ -651,7 +657,7 @@ char *classify_char(int *hl, unsigned char *bytes, int cont_count) {
 
 	if(is_out_of_range(cont_count, bytes)) {
 		if(permissive) {
-			*hl = HL_SPECIAL;
+			*hl = HL_SPEC_INV;
 		} else {
 			*hl = HL_BAD;
 		}
-- 
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