From 076f5e064fa7b6cc2c03b030abcf2cbd60514180 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko
Date: Wed, 5 Jan 2022 22:04:21 +0100
Subject: less: code shrink

function                                             old     new   delta
restore_tty                                            -      29     +29
less_main                                           2107    2105      -2
getch_nowait                                         253     251      -2
buffer_print                                         614     612      -2
less_exit                                             51      12     -39
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 29/-45)            Total: -16 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 miscutils/less.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

(limited to 'miscutils')

diff --git a/miscutils/less.c b/miscutils/less.c
index 26983f4..6825e55 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -325,15 +325,18 @@ static void print_statusline(const char *str)
 }
 
 /* Exit the program gracefully */
-static void less_exit(int code)
+static void restore_tty(void)
 {
 	set_tty_cooked();
 	if (!(G.kbd_fd_orig_flags & O_NONBLOCK))
 		ndelay_off(kbd_fd);
 	clear_line();
-	if (code < 0)
-		kill_myself_with_sig(- code); /* does not return */
-	exit(code);
+}
+
+static void less_exit(void)
+{
+	restore_tty();
+	exit(EXIT_SUCCESS);
 }
 
 #if (ENABLE_FEATURE_LESS_DASHCMD && ENABLE_FEATURE_LESS_LINENUMS) \
@@ -913,7 +916,7 @@ static void buffer_print(void)
 	) {
 		i = option_mask32 & FLAG_F ? 0 : cur_fline;
 		if (max_fline - i <= max_displayed_line)
-			less_exit(EXIT_SUCCESS);
+			less_exit();
 	}
 	status_print();
 }
@@ -1146,7 +1149,7 @@ static int64_t getch_nowait(void)
 			goto again;
 		}
 		/* EOF/error (ssh session got killed etc) */
-		less_exit(EXIT_SUCCESS);
+		less_exit();
 	}
 	set_tty_cooked();
 	return key64;
@@ -1297,7 +1300,7 @@ static void colon_process(void)
 		change_file(-1);
 		break;
 	case 'q':
-		less_exit(EXIT_SUCCESS);
+		less_exit();
 		break;
 	case 'x':
 		change_file(0);
@@ -1715,7 +1718,7 @@ static void keypress_process(int keypress)
 		buffer_line(cur_fline);
 		break;
 	case 'q': case 'Q':
-		less_exit(EXIT_SUCCESS);
+		less_exit();
 		break;
 #if ENABLE_FEATURE_LESS_MARKS
 	case 'm':
@@ -1793,7 +1796,8 @@ static void keypress_process(int keypress)
 
 static void sig_catcher(int sig)
 {
-	less_exit(- sig);
+	restore_tty();
+	kill_myself_with_sig(sig); /* does not return */
 }
 
 #if ENABLE_FEATURE_LESS_WINCH
-- 
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