From d851ccdd413e6265a34f56c3d2a2edf227d4f9b7 Mon Sep 17 00:00:00 2001
From: Mike Scalora <mike@scalora.org>
Date: Sat, 2 Apr 2016 12:13:24 +0200
Subject: [PATCH] keyboard: recognize four escape sequences produced by iTerm2
On iTerm2 on OS X, the Option+Arrow keys produce special sequences
that start with two escapes. Catch these sequences and interpret
them appropriately as WordLeft / WordRight / Home / End.
Signed-off-by: Mike Scalora <mike@scalora.org>
Signed-off-by: Thomas Rosenau <thomasr@fantasymail.de>
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
---
src/winio.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/src/winio.c b/src/winio.c
index 1516738c..acaae86b 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -330,6 +330,7 @@ int get_kbinput(WINDOW *win)
int parse_kbinput(WINDOW *win)
{
static int escapes = 0, byte_digits = 0;
+ static bool double_esc = FALSE;
int *kbinput, retval = ERR;
meta_key = FALSE;
@@ -390,7 +391,30 @@ int parse_kbinput(WINDOW *win)
retval = parse_escape_sequence(win, *kbinput);
break;
case 2:
- if (get_key_buffer_len() == 0) {
+ if (double_esc) {
+ /* An "ESC ESC [ X" sequence from Option+arrow. */
+ switch (*kbinput) {
+ case 'A':
+ retval = KEY_HOME;
+ break;
+ case 'B':
+ retval = KEY_END;
+ break;
+#ifndef NANO_TINY
+ case 'C':
+ retval = controlright;
+ break;
+ case 'D':
+ retval = controlleft;
+ break;
+#endif
+ default:
+ retval = ERR;
+ break;
+ }
+ double_esc = FALSE;
+ escapes = 0;
+ } else if (get_key_buffer_len() == 0) {
if (('0' <= *kbinput && *kbinput <= '2' &&
byte_digits == 0) || ('0' <= *kbinput &&
*kbinput <= '9' && byte_digits > 0)) {
@@ -462,6 +486,9 @@ int parse_kbinput(WINDOW *win)
retval = *kbinput;
}
}
+ } else if (*kbinput=='[') {
+ /* This is an iTerm2 sequence: ^[ ^[ [ X. */
+ double_esc = TRUE;
} else {
/* Two escapes followed by a non-escape, and
* there are other keystrokes waiting: combined
--
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