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(Fthis_single_command_keys): New function.

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(syms_of_keyboard): defsubr it.
(this_single_command_key_start): New variable.
(add_command_key): Reduce this_single_command_key_start if nec.
(command_loop_1): Clear this_single_command_key_start if nec.
(Fread_key_sequence, Fexecute_extended_command): Likewise.
(read_key_sequence): Set this_single_command_key_start.
This commit is contained in:
Richard M. Stallman 1996-05-02 22:33:51 +00:00
parent 377f24f595
commit 6321824f33
1 changed files with 35 additions and 3 deletions
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38
src/keyboard.c
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@ -125,6 +125,10 @@ Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */
Lisp_Object this_command_keys;
int this_command_key_count;
/* Number of elements of this_command_keys
that precede this key sequence. */
int this_single_command_key_start;
/* Record values of this_command_key_count and echo_length ()
before this command was read. */
static int before_command_key_count;
@ -715,6 +719,8 @@ add_command_key (key)
if (before_command_restore_flag)
{
this_command_key_count = before_command_key_count_1;
if (this_command_key_count < this_single_command_key_start)
this_single_command_key_start = this_command_key_count;
echo_truncate (before_command_echo_length_1);
before_command_restore_flag = 0;
}
@ -1068,6 +1074,7 @@ command_loop_1 ()
nonundocount = 0;
no_redisplay = 0;
this_command_key_count = 0;
this_single_command_key_start = 0;
/* Make sure this hook runs after commands that get errors and
throw to top level. */
@ -1174,6 +1181,7 @@ command_loop_1 ()
{
cancel_echoing ();
this_command_key_count = 0;
this_single_command_key_start = 0;
goto finalize;
}
@ -1398,6 +1406,7 @@ command_loop_1 ()
current_kboard->Vlast_command = this_command;
cancel_echoing ();
this_command_key_count = 0;
this_single_command_key_start = 0;
}
if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks))
@ -5819,6 +5828,7 @@ read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last,
if (INTERACTIVE)
echo_start = echo_length ();
keys_start = this_command_key_count;
this_single_command_key_start = keys_start;
#if defined (GOBBLE_FIRST_EVENT)
/* This doesn't quite work, because some of the things that read_char
@ -6336,6 +6346,9 @@ read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last,
if (!used_mouse_menu)
last_nonmenu_event = key;
/* Record what part of this_command_keys is the current key sequence. */
this_single_command_key_start = this_command_key_count - t;
prev_fkey_map = fkey_map;
prev_fkey_start = fkey_start;
prev_fkey_end = fkey_end;
@ -6404,7 +6417,7 @@ read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last,
(To ignore it safely, we would need to gcpro a bunch of
other variables.) */
if (! (VECTORP (fkey_next) || STRINGP (fkey_next)))
error ("Function in function-key-map returns invalid key sequence");
error ("Function in key-translation-map returns invalid key sequence");
}
function_key_possible = ! NILP (fkey_next);
@ -6738,7 +6751,10 @@ DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0,
gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0]));
if (NILP (continue_echo))
this_command_key_count = 0;
{
this_command_key_count = 0;
this_single_command_key_start = 0;
}
i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])),
prompt, ! NILP (dont_downcase_last),
@ -6760,7 +6776,7 @@ Optional second arg RECORD-FLAG non-nil\n\
means unconditionally put this command in `command-history'.\n\
Otherwise, that is done only if an arg is read using the minibuffer.\n\
The argument KEYS specifies the value to use instead of (this-command-keys)\n\
when reading the arguments; if it is nil, (this_command_key_count) is used.\n\
when reading the arguments; if it is nil, (this-command-keys) is used.\n\
The argument SPECIAL, if non-nil, means that this command is executing\n\
a special event, so ignore the prefix argument and don't clear it.")
(cmd, record_flag, keys, special)
@ -6898,6 +6914,7 @@ DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_
Lisp_Object tem;
this_command_key_count = 0;
this_single_command_key_start = 0;
keys = XVECTOR (saved_keys)->contents;
for (i = 0; i < XVECTOR (saved_keys)->size; i++)
@ -7062,6 +7079,20 @@ The value is a string or a vector.")
XVECTOR (this_command_keys)->contents);
}
DEFUN ("this-single-command-keys", Fthis_single_command_keys,
Sthis_single_command_keys, 0, 0, 0,
"Return the key sequence that invoked this command.\n\
Unlike `this-command-keys', this function's value\n\
does not include prefix arguments.\n\
The value is a string or a vector.")
()
{
return make_event_array (this_command_key_count
- this_single_command_key_start,
(XVECTOR (this_command_keys)->contents
+ this_single_command_key_start));
}
DEFUN ("reset-this-command-lengths", Freset_this_command_lengths,
Sreset_this_command_lengths, 0, 0, 0,
"Used for complicated reasons in `universal-argument-other-key'.\n\
@ -7814,6 +7845,7 @@ syms_of_keyboard ()
defsubr (&Scommand_execute);
defsubr (&Srecent_keys);
defsubr (&Sthis_command_keys);
defsubr (&Sthis_single_command_keys);
defsubr (&Sreset_this_command_lengths);
defsubr (&Ssuspend_emacs);
defsubr (&Sabort_recursive_edit);