From c0091a8b7a5efd7b0f4f714327710513802d4668 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Sun, 8 Nov 2020 19:34:34 +0100
Subject: fix inline bold/italic bugs

---
 tea.c | 65 ++++++++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 44 insertions(+), 21 deletions(-)

diff --git a/tea.c b/tea.c
index c0065be..0865a35 100644
--- a/tea.c
+++ b/tea.c
@@ -24,14 +24,15 @@ char *src; /* source text */
 int src_l;
 int src_s;
 
-int *types; /* type of each character in source text */
-            /* types[src_i] = BREAK if last character of visual line */
-            /*              = HIDDEN if hidden inline */
-            /*              = NORMAL otherwise */
+int *types; /* type of each character in source text (see enums below) */
 
-#define NORMAL 0
-#define BREAK 1
-#define HIDDEN 2
+enum {
+	NORMAL = 0 << 0,
+	BREAK  = 1 << 1, /* last character of visual line */
+	HIDDEN = 1 << 2,
+	BOLD   = 1 << 3,
+	ITALIC = 1 << 4
+};
 
 int x, y; /* current cursor position */
 int w, h; /* terminal width, height */
@@ -135,6 +136,7 @@ void addc(char c) {
 			types[i] = 0;
 	}
 	src[++src_l] = c;
+	types[src_l] = 0;
 	src[src_l + 1] = '\0';
 }
 
@@ -143,7 +145,7 @@ void delc() {
 }
 
 int main() {
-	bool dot;
+	bool bold, dot, italic;
 	char c, *line, *p, *tmp;
 	int i, line_s, r;
 	struct winsize ws;
@@ -223,32 +225,45 @@ int main() {
 	x = 1;
 	y = yorig;
 
+	bold = false;
 	dot = false;
+	italic = false;
 	while (read(ttyfd, &c, 1) != 0) {
 		switch (c) {
 		case '\033': /* escape */
 			read(ttyfd, &c, 1);
-			if (c == 'b') {
+			switch (c) {
+			case 'b':
+				if (bold) break;
 				addc('\\'); hide();
 				addc('f'); hide();
 				addc('B'); hide();
-				prn(CSI "1m");
-			} else if (c == 'i') {
+				bold = true;
+				break;
+			case 'i':
+				if (italic) break;
 				addc('\\'); hide();
 				addc('f'); hide();
 				addc('I'); hide();
-				prn(CSI "3m");
-			} else if (c == 'r') {
+				italic = true;
+				break;
+			case 'r':
+			case ' ':
+				if (!bold && !italic) break;
 				addc('\\'); hide();
 				addc('f'); hide();
 				addc('R'); hide();
 				prn(CSI "0m");
-			} else if (c == '[') {
+				bold = false;
+				italic = false;
+				break;
+			case '[':
 				read(ttyfd, &c, 1);
 				if (c == 'A') up();
 				if (c == 'B') down();
 				if (c == 'C') right();
 				if (c == 'D') left();
+				break;
 			}
 			break;
 		case 3: /* ctrl-c */
@@ -257,24 +272,32 @@ int main() {
 		case 13: /* enter */
 			addc('\n');
 			breakline();
-			prn(CSI "0m");
+			dot = false;
 			break;
 		case 127: /* backspace */
 			if (x == 1) break;
 			prn("\b");
+			delc();
+			if (src[src_l-2] == '\\' && src[src_l-1] == 'f') {
+				if (src[src_l] = 'B')
+					bold = false;
+				if (src[src_l] = 'I')
+					italic = false;
+			}
 			while (types[src_l] == HIDDEN)
 				delc();
-			delc();
 			x--;
-			if (x == 1)
-				prn(CSI "0m");
+			if (x == 1) dot = false;
 			break;
 		default:
 			if (iscntrl(c)) break;
-			if (x == 1 && c == '.')
-				prn(CSI "2m");
+			prn(CSI "0m");
+			if (x == 1 && c == '.') dot = true;
 			addc(c);
-			if (x + 1 > w) breakline();
+			if (x > w) breakline();
+			if (bold) prn(CSI "1m");
+			if (dot) prn(CSI "2m");
+			if (italic) prn(CSI "3m");
 			prn("%c", c);
 			x++;
 			break;
-- 
cgit v1.2.3