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input: make Shift+Alt+Arrow work properly on rxvt and Eterm terminals 

This fixes https://savannah.gnu.org/bugs/?49636.
master
David Lawrence Ramsey 2016-11-18 14:14:36 +01:00 committed by Benno Schulenberg
parent eb68cd1c6b
commit 059c8efb44
1 changed files with 22 additions and 8 deletions
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30
src/winio.c
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@ -391,7 +391,8 @@ int parse_kbinput(WINDOW *win)
break;
case 2:
if (double_esc) {
/* An "ESC ESC [ X" sequence from Option+arrow. */
/* An "ESC ESC [ X" sequence from Option+arrow, or
* an "ESC ESC [ x" sequence from Shift+Alt+arrow. */
switch (keycode) {
case 'A':
retval = KEY_HOME;
@ -405,6 +406,18 @@ int parse_kbinput(WINDOW *win)
case 'D':
retval = controlleft;
break;
case 'a':
retval = shiftaltup;
break;
case 'b':
retval = shiftaltdown;
break;
case 'c':
retval = shiftaltright;
break;
case 'd':
retval = shiftaltleft;
break;
}
double_esc = FALSE;
escapes = 0;
@ -464,8 +477,9 @@ int parse_kbinput(WINDOW *win)
escapes = 0;
}
} else if (keycode == '[' && key_buffer_len > 0 &&
'A' <= *key_buffer && *key_buffer <= 'D') {
/* This is an iTerm2 sequence: ^[ ^[ [ X. */
(('A' <= *key_buffer && *key_buffer <= 'D') ||
('a' <= *key_buffer && *key_buffer <= 'd'))) {
/* An iTerm2/Eterm/rxvt sequence: ^[ ^[ [ X. */
double_esc = TRUE;
} else {
/* Two escapes followed by a non-escape, and there are more
@ -1432,10 +1446,10 @@ int *get_verbatim_kbinput(WINDOW *win, size_t *kbinput_len)
return retval;
}
/* Read in one control character (or an iTerm double Escape), or convert a
* series of six digits into a Unicode codepoint. Return in count either 1
* (for a control character or the first byte of a multibyte sequence), or 2
* (for an iTerm double Escape). */
/* Read in one control character (or an iTerm/Eterm/rxvt double Escape),
* or convert a series of six digits into a Unicode codepoint. Return
* in count either 1 (for a control character or the first byte of a
* multibyte sequence), or 2 (for an iTerm/Eterm/rxvt double Escape). */
int *parse_verbatim_kbinput(WINDOW *win, size_t *count)
{
int *kbinput;
@ -1497,7 +1511,7 @@ int *parse_verbatim_kbinput(WINDOW *win, size_t *count)
*count = 1;
/* If this is an iTerm double escape, take both Escapes. */
/* If this is an iTerm/Eterm/rxvt double escape, take both Escapes. */
if (key_buffer_len > 3 && *key_buffer == ESC_CODE &&
key_buffer[1] == ESC_CODE && key_buffer[2] == '[')
*count = 2;