From dd4b446f76736c0a13a61a38d7d816b6e6b5fca2 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Wed, 2 Aug 2017 16:52:12 +0200
Subject: [PATCH] hush: make SIGINT handling visually less confusing

$ echo $$
18448
$ echo $? <wait here, run "kill -INT 18448" in other shell><press enter>
   <=== NOTHING??
$

That empty line does not look right. After this patch:

$ echo $$
18448
$ echo $? <wait here, run "kill -INT 18448" in other shell><press enter>
^C
$

function                                             old     new   delta
fgetc_interactive                                    245     246      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 shell/hush.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/shell/hush.c b/shell/hush.c
index cfefb7324..93ed0bc0b 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -2415,14 +2415,14 @@ static int get_user_input(struct in_str *i)
 				/*timeout*/ -1
 		);
 		/* read_line_input intercepts ^C, "convert" it to SIGINT */
-		if (r == 0) {
-			write(STDOUT_FILENO, "^C", 2);
+		if (r == 0)
 			raise(SIGINT);
-		}
 		check_and_run_traps();
 		if (r != 0 && !G.flag_SIGINT)
 			break;
 		/* ^C or SIGINT: repeat */
+		/* bash prints ^C even on real SIGINT (non-kbd generated) */
+		write(STDOUT_FILENO, "^C", 2);
 		G.last_exitcode = 128 + SIGINT;
 	}
 	if (r < 0) {
-- 
2.25.1