nano

commit 363a4378b752020ff91f2a1db5d8a58c45274c32
parent f70f52873058b5a69b466106e0cc88850da45ea0
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Sat, 11 May 2024 12:04:04 +0200

input: provide for urxvt setting a high bit or sending an extra escape

When pressing Alt+Home/Alt+End on urxvt, urxvt either sets the high bit
of the last byte in the sequence for Home/End (when Meta8 is True), or
sends an extra escape before that same sequence (when Meta8 is False).
Accommodate for this bug by recognizing the produced code sequences.

Indirectly-reported-by: Sébastien Desreux <seb@h-k.fr>
  https://lists.gnu.org/archive/html/nano-devel/2024-05/msg00007.html

Diffstat:
M
src/winio.c
 | 
10
++++++++++

1 file changed, 10 insertions(+), 0 deletions(-)
diff --git a/src/winio.c b/src/winio.c
@@ -825,6 +825,8 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 #ifndef NANO_TINY
 			else if (length > 1 && seq[1] == '@')
 				return shiftcontrolhome;
+			else if (length > 1 && seq[1] == 0xFE)
+				return ALT_HOME;
 #endif
 			break;
 		case '8': /* Esc [ 8 ~ == End on Eterm/rxvt;
@@ -840,6 +842,8 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 #ifndef NANO_TINY
 			else if (length > 1 && seq[1] == '@')
 				return shiftcontrolend;
+			else if (length > 1 && seq[1] == 0xFE)
+				return ALT_END;
 #endif
 			break;
 		case '9': /* Esc [ 9 == Delete on Mach console. */
@@ -1052,6 +1056,12 @@ int parse_kbinput(WINDOW *frame)
 #endif
 			else if (keycode < 0x20 && !last_escape_was_alone)
 				meta_key = TRUE;
+#ifndef NANO_TINY
+			else if (keycode == KEY_HOME)
+				return ALT_HOME;
+			else if (keycode == KEY_END)
+				return ALT_END;
+#endif
 		} else if (waiting_codes == 0 || nextcodes[0] == ESC_CODE ||
 								(keycode != 'O' && keycode != '[')) {
 			if (!shifted_metas)