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input: erase the next word when Ctrl is held while pressing Delete

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Bind the until-now unbound function 'cutwordright' to <Ctrl+Delete>.
The complementary function, 'cutwordleft', is not bound by default
because on many terminals the keystroke <Ctrl+Backspace> generates
^H -- the canonical ASCII backspace character.  We cannot change the
existing action of ^H without upsetting some users.

Signed-off-by: Marco Diego Aurélio Mesquita <marcodiegomesquita@gmail.com>
Signed-off-by: Benno Schulenberg <bensberg@telfort.nl>
This commit is contained in:
Marco Diego Aurélio Mesquita 2018-07-12 18:47:46 -03:00 committed by Benno Schulenberg
parent 8d8f5788ce
commit a67f6c6031
5 changed files with 19 additions and 1 deletions
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2
src/global.c
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@ -69,6 +69,7 @@ int didfind = 0;
/* Whether the last search found something. */
int controlleft, controlright, controlup, controldown, controlhome, controlend;
int controldelete;
#ifndef NANO_TINY
int shiftcontrolleft, shiftcontrolright, shiftcontrolup, shiftcontroldown;
int shiftcontrolhome, shiftcontrolend;
@ -1162,6 +1163,7 @@ void shortcut_init(void)
add_to_sclist(MMAIN, "M-;", 0, run_macro, 0);
add_to_sclist(MMAIN, "M-U", 0, do_undo, 0);
add_to_sclist(MMAIN, "M-E", 0, do_redo, 0);
add_to_sclist(MMAIN, "^Del", CONTROL_DELETE, do_cut_next_word, 0);
#endif
#ifdef ENABLE_WORDCOMPLETION
add_to_sclist(MMAIN, "^]", 0, complete_a_word, 0);

1
src/nano.c
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@ -2578,6 +2578,7 @@ int main(int argc, char **argv)
/* Ask for the codes for Control+Home/End. */
controlhome = get_keycode("kHOM5", CONTROL_HOME);
controlend = get_keycode("kEND5", CONTROL_END);
controldelete = get_keycode("kDC5", CONTROL_DELETE);
#ifndef NANO_TINY
/* Ask for the codes for Shift+Control+Left/Right/Up/Down. */
shiftcontrolleft = get_keycode("kLFT6", SHIFT_CONTROL_LEFT);

1
src/nano.h
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@ -585,6 +585,7 @@ enum
#define CONTROL_DOWN 0x404
#define CONTROL_HOME 0x405
#define CONTROL_END 0x406
#define CONTROL_DELETE 0x407
#define SHIFT_CONTROL_LEFT 0x411
#define SHIFT_CONTROL_RIGHT 0x412
#define SHIFT_CONTROL_UP 0x413

1
src/proto.h
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@ -61,6 +61,7 @@ extern int controlup;
extern int controldown;
extern int controlhome;
extern int controlend;
extern int controldelete;
#ifndef NANO_TINY
extern int shiftcontrolleft;
extern int shiftcontrolright;

15
src/winio.c
View File

@ -538,6 +538,8 @@ int parse_kbinput(WINDOW *win)
return CONTROL_HOME;
else if (retval == controlend)
return CONTROL_END;
else if (retval == controldelete)
return CONTROL_DELETE;
#ifndef NANO_TINY
else if (retval == shiftcontrolleft) {
shift_held = TRUE;
@ -609,6 +611,8 @@ int parse_kbinput(WINDOW *win)
return CONTROL_HOME;
else if (retval == KEY_END)
return CONTROL_END;
else if (retval == KEY_DC)
return CONTROL_DELETE;
}
#ifndef NANO_TINY
/* Are both Shift and Alt being held? */
@ -1088,9 +1092,18 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
* Linux console/xterm/Terminal. */
if (length > 2 && seq[2] == '~')
return KEY_DC;
if (length > 4 && seq[2] == ';' && seq[4] == '~')
if (length > 4 && seq[2] == ';' && seq[4] == '~') {
/* Esc [ 3 ; x ~ == modified Delete on xterm. */
*consumed = 5;
if (seq[3] == '5')
/* Esc [ 3 ; 5 ~ == Ctrl-Delete on xterm. */
return CONTROL_DELETE;
}
if (length > 2 && seq[2] == '^') {
/* Esc [ 3 ^ == Ctrl-Delete on urxvt. */
*consumed = 3;
return CONTROL_DELETE;
}
break;
case '4': /* Esc [ 4 ~ == End on VT220/VT320/
* Linux console/xterm. */