From 9e3fcd953e7136b900d6aabafe1c64c083a927be Mon Sep 17 00:00:00 2001
From: Lukasz Kasprzak <lukas@labunix.xyz>
Date: Wed, 20 May 2026 14:23:09 +0200
Subject: initial commit

---
 patches/ttym-flash-2.0.diff | 113 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 patches/ttym-flash-2.0.diff

(limited to 'patches/ttym-flash-2.0.diff')

diff --git a/patches/ttym-flash-2.0.diff b/patches/ttym-flash-2.0.diff
new file mode 100644
index 0000000..0ee30b5
--- /dev/null
+++ b/patches/ttym-flash-2.0.diff
@@ -0,0 +1,113 @@
+diff -ruN a/config.def.h b/config.def.h
+--- a/config.def.h	2026-05-20 12:14:52.639963552 +0200
++++ b/config.def.h	2026-05-20 12:14:52.639963552 +0200
+@@ -9,3 +9,8 @@
+  * Override per-run with --no-persist.
+  */
+ static const int ALERT_PERSIST = 1;
++
++/* reverse-video flash during the alert loop.
++ * Override per-run with --flash on|off.
++ */
++static const int FLASH = 1;
+diff -ruN a/ttym.c b/ttym.c
+--- a/ttym.c	2026-05-20 12:14:52.639963552 +0200
++++ b/ttym.c	2026-05-20 12:17:37.203364538 +0200
+@@ -11,6 +11,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <strings.h>
+ #include <sys/ioctl.h>
+ #include <termios.h>
+ #include <time.h>
+@@ -24,6 +25,7 @@
+ 	int quiet;            /* -q: suppress completion bell */
+ 	int silent;           /* -s: no bell, no extras */
+ 	int alert_persist;    /* alert loop until keypress; --no-persist disables */
++	int flash;            /* reverse-video flash during alert loop */
+ } Config;
+ 
+ static struct termios oldtios;
+@@ -81,6 +83,13 @@
+ 	interrupted = 1;
+ }
+ 
++static int
++parse_bool_str(const char *v)
++{
++	return !strcasecmp(v, "true") || !strcasecmp(v, "yes") ||
++	       !strcmp(v, "1")        || !strcasecmp(v, "on");
++}
++
+ static void
+ restore_tty(void)
+ {
+@@ -88,7 +97,7 @@
+ 		tcsetattr(ttyfd, TCSANOW, &oldtios);
+ 	rawset = 0;
+ 	if (out_tty)
+-		fputs("\033[?7h\033[?25h", stdout);  /* re-enable wrap, show cursor */
++		fputs("\033[?5l\033[?7h\033[?25h", stdout);  /* clear reverse, re-enable wrap, show cursor */
+ 	fputc('\n', stdout);
+ 	fflush(stdout);
+ }
+@@ -241,14 +250,17 @@
+ }
+ 
+ static void
+-alert_loop(void)
++alert_loop(int flash)
+ {
+ 	fputs("\033[?25h\033[?7h", stdout);
+ 	int ticks = 0;
+ 	while (!interrupted) {
+ 		fputc('\a', stdout);
++		if (flash) fputs("\033[?5h", stdout);
+ 		fflush(stdout);
+ 		sleep_ms(150);
++		if (flash) fputs("\033[?5l", stdout);
++		fflush(stdout);
+ 
+ 		int acked = 0;
+ 		for (int i = 0; i < 15 && !interrupted; i++) {
+@@ -287,6 +299,7 @@
+ "  -q              no sound\n"
+ "  -s              silent\n"
+ "  --no-persist    skip alert-until-keypress loop\n"
++"  --flash on|off  terminal flash during alert loop\n"
+ "  --              end of options\n"
+ "  -h              help\n"
+ "\n"
+@@ -421,7 +434,7 @@
+ 		}
+ 		if (!cfg->silent && cfg->alert_persist && is_foreground()) {
+ 			interrupted = 0;
+-			alert_loop();
++			alert_loop(cfg->flash);
+ 		}
+ 	}
+ 
+@@ -436,6 +449,7 @@
+ {
+ 	Config cfg = {0};
+ 	cfg.alert_persist = ALERT_PERSIST;
++	cfg.flash         = FLASH;
+ 
+ 	/* Pre-strip long-form flags before getopt. Stop at "--". */
+ 	int new_argc = 0;
+@@ -452,6 +466,14 @@
+ 			cfg.alert_persist = 0;
+ 			continue;
+ 		}
++		if (!past_dd && !strncmp(argv[i], "--flash=", 8)) {
++			cfg.flash = parse_bool_str(argv[i] + 8);
++			continue;
++		}
++		if (!past_dd && !strcmp(argv[i], "--flash") && i + 1 < argc) {
++			cfg.flash = parse_bool_str(argv[++i]);
++			continue;
++		}
+ 		new_argv[new_argc++] = argv[i];
+ 	}
+ 	new_argv[new_argc] = NULL;
-- 
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