1 files changed, 111 insertions, 0 deletions
diff --git a/patches/ttym-persist-alert-2.0.diff b/patches/ttym-persist-alert-2.0.diff
new file mode 100644
index 0000000..7e9d64b
--- /dev/null
+++ b/patches/ttym-persist-alert-2.0.diff
@@ -0,0 +1,111 @@
+diff -ruN a/config.def.h b/config.def.h
+--- a/config.def.h	2026-05-20 11:57:26.574344832 +0200
++++ b/config.def.h	2026-05-20 11:57:26.578344915 +0200
+@@ -3,3 +3,9 @@
+ /* progress bar glyphs (ASCII default) */
+ static const char *const BAR_FILL  = ">";
+ static const char *const BAR_EMPTY = "-";
++
++/* persistent alert: keep ringing the bell until any key is pressed.
++ * Foreground-only; backgrounded runs always fall through.
++ * Override per-run with --no-persist.
++ */
++static const int ALERT_PERSIST = 1;
+diff -ruN a/ttym.c b/ttym.c
+--- a/ttym.c	2026-05-20 11:57:26.574344832 +0200
++++ b/ttym.c	2026-05-20 11:57:26.578344915 +0200
+@@ -23,6 +23,7 @@
+ typedef struct {
+ 	int quiet;            /* -q: suppress completion bell */
+ 	int silent;           /* -s: no bell, no extras */
++	int alert_persist;    /* alert loop until keypress; --no-persist disables */
+ } Config;
+ 
+ static struct termios oldtios;
+@@ -226,6 +227,48 @@
+ 	fflush(stdout);
+ }
+ 
++/* ===== alert loop =====
++ * Bell + poll for keypress, ~1.5s per beat; 4-min safety cap.
++ */
++
++static int
++is_foreground(void)
++{
++	if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO)) return 0;
++	pid_t pgrp = tcgetpgrp(STDIN_FILENO);
++	if (pgrp < 0) return 0;
++	return pgrp == getpgrp();
++}
++
++static void
++alert_loop(void)
++{
++	fputs("\033[?25h\033[?7h", stdout);
++	int ticks = 0;
++	while (!interrupted) {
++		fputc('\a', stdout);
++		fflush(stdout);
++		sleep_ms(150);
++
++		int acked = 0;
++		for (int i = 0; i < 15 && !interrupted; i++) {
++			if (ttyfd < 0) { sleep_ms(100); continue; }
++			struct pollfd pfd = { .fd = ttyfd, .events = POLLIN };
++			int pr = poll(&pfd, 1, 100);
++			if (pr > 0 && (pfd.revents & POLLIN)) {
++				char ch;
++				ssize_t rd = read(ttyfd, &ch, 1);
++				if (rd >= 0) { acked = 1; break; }
++			} else if (pr < 0) {
++				sleep_ms(100);
++			}
++		}
++		if (acked) break;
++		if (++ticks > 160) break;
++	}
++	fflush(stdout);
++}
++
+ /* ===== usage =====
+  * Patches MUST update this in lockstep with new flags so -h always
+  * reflects the build.
+@@ -243,6 +286,7 @@
+ "FLAGS:\n"
+ "  -q              no sound\n"
+ "  -s              silent\n"
++"  --no-persist    skip alert-until-keypress loop\n"
+ "  --              end of options\n"
+ "  -h              help\n"
+ "\n"
+@@ -375,6 +419,10 @@
+ 			fflush(stdout);
+ 			sleep_ms(50);
+ 		}
++		if (!cfg->silent && cfg->alert_persist && is_foreground()) {
++			interrupted = 0;
++			alert_loop();
++		}
+ 	}
+ 
+ 	(void)cfg;
+@@ -387,6 +435,7 @@
+ main(int argc, char **argv)
+ {
+ 	Config cfg = {0};
++	cfg.alert_persist = ALERT_PERSIST;
+ 
+ 	/* Pre-strip long-form flags before getopt. Stop at "--". */
+ 	int new_argc = 0;
+@@ -399,6 +448,10 @@
+ 			new_argv[new_argc++] = argv[i];
+ 			continue;
+ 		}
++		if (!past_dd && !strcmp(argv[i], "--no-persist")) {
++			cfg.alert_persist = 0;
++			continue;
++		}
+ 		new_argv[new_argc++] = argv[i];
+ 	}
+ 	new_argv[new_argc] = NULL;