/* Keyboard and mouse input; editor command loop.
-Copyright (C) 1985-1989, 1993-1997, 1999-2014 Free Software Foundation, Inc.
+Copyright (C) 1985-1989, 1993-1997, 1999-2015 Free Software Foundation,
+Inc.
This file is part of GNU Emacs.
static ptrdiff_t before_command_key_count;
static ptrdiff_t before_command_echo_length;
+#ifdef HAVE_STACK_OVERFLOW_HANDLING
+
+/* For longjmp to recover from C stack overflow. */
+sigjmp_buf return_to_command_loop;
+
+/* Message displayed by Vtop_level when recovering from C stack overflow. */
+static Lisp_Object recover_top_level_message;
+
+#endif /* HAVE_STACK_OVERFLOW_HANDLING */
+
+/* Message normally displayed by Vtop_level. */
+static Lisp_Object regular_top_level_message;
+
/* For longjmp to where kbd input is being done. */
static sys_jmp_buf getcjmp;
'volatile' here. */
Lisp_Object internal_last_event_frame;
-static Lisp_Object Qx_set_selection, Qhandle_switch_frame;
+static Lisp_Object Qgui_set_selection, Qhandle_switch_frame;
static Lisp_Object Qhandle_select_window;
Lisp_Object QPRIMARY;
/* File in which we write all commands we read. */
static FILE *dribble;
-/* Nonzero if input is available. */
+/* True if input is available. */
bool input_pending;
+/* True if more input was available last time we read an event.
+
+ Since redisplay can take a significant amount of time and is not
+ indispensable to perform the user's commands, when input arrives
+ "too fast", Emacs skips redisplay. More specifically, if the next
+ command has already been input when we finish the previous command,
+ we skip the intermediate redisplay.
+
+ This is useful to try and make sure Emacs keeps up with fast input
+ rates, such as auto-repeating keys. But in some cases, this proves
+ too conservative: we may end up disabling redisplay for the whole
+ duration of a key repetition, even though we could afford to
+ redisplay every once in a while.
+
+ So we "sample" the input_pending flag before running a command and
+ use *that* value after running the command to decide whether to
+ skip redisplay or not. This way, we only skip redisplay if we
+ really can't keep up with the repeat rate.
+
+ This only makes a difference if the next input arrives while running the
+ command, which is very unlikely if the command is executed quickly.
+ IOW this tends to avoid skipping redisplay after a long running command
+ (which is a case where skipping redisplay is not very useful since the
+ redisplay time is small compared to the time it took to run the command).
+
+ A typical use case is when scrolling. Scrolling time can be split into:
+ - Time to do jit-lock on the newly displayed portion of buffer.
+ - Time to run the actual scroll command.
+ - Time to perform the redisplay.
+ Jit-lock can happen either during the command or during the redisplay.
+ In the most painful cases, the jit-lock time is the one that dominates.
+ Also jit-lock can be tweaked (via jit-lock-defer) to delay its job, at the
+ cost of temporary inaccuracy in display and scrolling.
+ So without input_was_pending, what typically happens is the following:
+ - when the command starts, there's no pending input (yet).
+ - the scroll command triggers jit-lock.
+ - during the long jit-lock time the next input arrives.
+ - at the end of the command, we check input_pending and hence decide to
+ skip redisplay.
+ - we read the next input and start over.
+ End result: all the hard work of jit-locking is "wasted" since redisplay
+ doesn't actually happens (at least not before the input rate slows down).
+ With input_was_pending redisplay is still skipped if Emacs can't keep up
+ with the input rate, but if it can keep up just enough that there's no
+ input_pending when we begin the command, then redisplay is not skipped
+ which results in better feedback to the user. */
+static bool input_was_pending;
+
/* Circular buffer for pre-read keyboard input. */
static struct input_event kbd_buffer[KBD_BUFFER_SIZE];
static void
echo_add_key (Lisp_Object c)
{
- int size = KEY_DESCRIPTION_SIZE + 100;
- char *buffer = alloca (size);
+ char initbuf[KEY_DESCRIPTION_SIZE + 100];
+ ptrdiff_t size = sizeof initbuf;
+ char *buffer = initbuf;
char *ptr = buffer;
Lisp_Object echo_string;
+ USE_SAFE_ALLOCA;
echo_string = KVAR (current_kboard, echo_string);
else if (SYMBOLP (c))
{
Lisp_Object name = SYMBOL_NAME (c);
- int nbytes = SBYTES (name);
+ ptrdiff_t nbytes = SBYTES (name);
if (size - (ptr - buffer) < nbytes)
{
- int offset = ptr - buffer;
+ ptrdiff_t offset = ptr - buffer;
size = max (2 * size, size + nbytes);
- buffer = alloca (size);
+ buffer = SAFE_ALLOCA (size);
ptr = buffer + offset;
}
if ((NILP (echo_string) || SCHARS (echo_string) == 0)
&& help_char_p (c))
{
- const char *text = " (Type ? for further options)";
- int len = strlen (text);
+ static const char text[] = " (Type ? for further options)";
+ int len = sizeof text - 1;
if (size - (ptr - buffer) < len)
{
- int offset = ptr - buffer;
+ ptrdiff_t offset = ptr - buffer;
size += len;
- buffer = alloca (size);
+ buffer = SAFE_ALLOCA (size);
ptr = buffer + offset;
}
/* Replace a dash from echo_dash with a space, otherwise add a space
at the end as a separator between keys. */
+ AUTO_STRING (space, " ");
if (STRINGP (echo_string) && SCHARS (echo_string) > 1)
{
Lisp_Object last_char, prev_char, idx;
if (XINT (last_char) == '-' && XINT (prev_char) != ' ')
Faset (echo_string, idx, make_number (' '));
else
- echo_string = concat2 (echo_string, build_string (" "));
+ echo_string = concat2 (echo_string, space);
}
else if (STRINGP (echo_string) && SCHARS (echo_string) > 0)
- echo_string = concat2 (echo_string, build_string (" "));
+ echo_string = concat2 (echo_string, space);
kset_echo_string
(current_kboard,
concat2 (echo_string, make_string (buffer, ptr - buffer)));
+ SAFE_FREE ();
}
/* Add C to the echo string, if echoing is going on. C can be a
/* Put a dash at the end of the buffer temporarily,
but make it go away when the next character is added. */
- kset_echo_string
- (current_kboard,
- concat2 (KVAR (current_kboard, echo_string), build_string ("-")));
+ AUTO_STRING (dash, "-");
+ kset_echo_string (current_kboard,
+ concat2 (KVAR (current_kboard, echo_string), dash));
echo_now ();
}
{
print_error_message (data, Qexternal_debugging_output,
SSDATA (context), signal);
- Fterpri (Qexternal_debugging_output);
+ Fterpri (Qexternal_debugging_output, Qnil);
Fkill_emacs (make_number (-1));
}
else
Lisp_Object
command_loop (void)
{
+#ifdef HAVE_STACK_OVERFLOW_HANDLING
+ /* At least on GNU/Linux, saving signal mask is important here. */
+ if (sigsetjmp (return_to_command_loop, 1) != 0)
+ {
+ /* Comes here from handle_sigsegv, see sysdep.c. */
+ init_eval ();
+ Vinternal__top_level_message = recover_top_level_message;
+ }
+ else
+ Vinternal__top_level_message = regular_top_level_message;
+#endif /* HAVE_STACK_OVERFLOW_HANDLING */
if (command_loop_level > 0 || minibuf_level > 0)
{
Lisp_Object val;
}
}
-DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0,
- doc: /* Evaluate BODY with mouse movement events enabled.
-Within a `track-mouse' form, mouse motion generates input events that
-you can read with `read-event'.
-Normally, mouse motion is ignored.
-usage: (track-mouse BODY...) */)
- (Lisp_Object args)
+DEFUN ("internal--track-mouse", Ftrack_mouse, Strack_mouse, 1, 1, 0,
+ doc: /* Call BODYFUN with mouse movement events enabled. */)
+ (Lisp_Object bodyfun)
{
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object val;
do_mouse_tracking = Qt;
- val = Fprogn (args);
+ val = call0 (bodyfun);
return unbind_to (count, val);
}
/* Execute the command. */
+ {
+ total_keys += total_keys < NUM_RECENT_KEYS;
+ ASET (recent_keys, recent_keys_index,
+ Fcons (Qnil, cmd));
+ if (++recent_keys_index >= NUM_RECENT_KEYS)
+ recent_keys_index = 0;
+ }
Vthis_command = cmd;
Vreal_this_command = cmd;
safe_run_hooks (Qpre_command_hook);
= call1 (Fsymbol_value (Qregion_extract_function), Qnil);
if (XINT (Flength (txt)) > 0)
/* Don't set empty selections. */
- call2 (Qx_set_selection, QPRIMARY, txt);
+ call2 (Qgui_set_selection, QPRIMARY, txt);
}
if (current_buffer != prev_buffer || MODIFF != prev_modiff)
}
}
-/* Subroutine for safe_run_hooks: run the hook HOOK. */
+/* Subroutine for safe_run_hooks: run the hook, which is ARGS[1]. */
static Lisp_Object
-safe_run_hooks_1 (void)
+safe_run_hooks_1 (ptrdiff_t nargs, Lisp_Object *args)
{
- eassert (CONSP (Vinhibit_quit));
- return call0 (XCDR (Vinhibit_quit));
+ eassert (nargs == 2);
+ return call0 (args[1]);
}
/* Subroutine for safe_run_hooks: handle an error by clearing out the function
from the hook. */
static Lisp_Object
-safe_run_hooks_error (Lisp_Object error_data)
+safe_run_hooks_error (Lisp_Object error, ptrdiff_t nargs, Lisp_Object *args)
{
- Lisp_Object hook
- = CONSP (Vinhibit_quit) ? XCAR (Vinhibit_quit) : Vinhibit_quit;
- Lisp_Object fun = CONSP (Vinhibit_quit) ? XCDR (Vinhibit_quit) : Qnil;
- Lisp_Object args[4];
- args[0] = build_string ("Error in %s (%S): %S");
- args[1] = hook;
- args[2] = fun;
- args[3] = error_data;
- Fmessage (4, args);
+ eassert (nargs == 2);
+ AUTO_STRING (format, "Error in %s (%S): %S");
+ Lisp_Object hook = args[0];
+ Lisp_Object fun = args[1];
+ Fmessage (4, (Lisp_Object []) {format, hook, fun, error});
+
if (SYMBOLP (hook))
{
Lisp_Object val;
static Lisp_Object
safe_run_hook_funcall (ptrdiff_t nargs, Lisp_Object *args)
{
- eassert (nargs == 1);
- if (CONSP (Vinhibit_quit))
- XSETCDR (Vinhibit_quit, args[0]);
- else
- Vinhibit_quit = Fcons (Vinhibit_quit, args[0]);
+ Lisp_Object iargs[2];
- internal_condition_case (safe_run_hooks_1, Qt, safe_run_hooks_error);
+ eassert (nargs == 2);
+ /* Yes, run_hook_with_args works this way. */
+ iargs[0] = args[1];
+ iargs[1] = args[0];
+ internal_condition_case_n (safe_run_hooks_1, 2, iargs,
+ Qt, safe_run_hooks_error);
return Qnil;
}
void
safe_run_hooks (Lisp_Object hook)
{
- /* FIXME: our `internal_condition_case' does not provide any way to pass data
- to its body or to its handlers other than via globals such as
- dynamically-bound variables ;-) */
+ Lisp_Object args[2];
+ struct gcpro gcpro1;
ptrdiff_t count = SPECPDL_INDEX ();
- specbind (Qinhibit_quit, hook);
- run_hook_with_args (1, &hook, safe_run_hook_funcall);
+ args[0] = hook;
+ args[1] = hook;
+ GCPRO1 (hook);
+ specbind (Qinhibit_quit, Qt);
+ run_hook_with_args (2, args, safe_run_hook_funcall);
unbind_to (count, Qnil);
+ UNGCPRO;
}
\f
{ /* An encoded byte sequence, let's try to decode it. */
struct coding_system *coding
= TERMINAL_KEYBOARD_CODING (terminal);
- unsigned char *src = alloca (n);
+ unsigned char src[MAX_ENCODED_BYTES];
+ unsigned char dest[MAX_ENCODED_BYTES * MAX_MULTIBYTE_LENGTH];
int i;
for (i = 0; i < n; i++)
src[i] = XINT (events[i]);
if (meta_key != 2)
for (i = 0; i < n; i++)
src[i] &= ~0x80;
- coding->destination = alloca (n * 4);
- coding->dst_bytes = n * 4;
+ coding->destination = dest;
+ coding->dst_bytes = sizeof dest;
decode_coding_c_string (coding, src, n, Qnil);
eassert (coding->produced_char <= n);
if (coding->produced_char == 0)
/* commandflag 0 means do not autosave, but do redisplay.
-1 means do not redisplay, but do autosave.
-2 means do neither.
- 1 means do both. */
+ 1 means do both.
-/* The argument MAP is a keymap for menu prompting.
+ The argument MAP is a keymap for menu prompting.
PREV_EVENT is the previous input event, or nil if we are reading
the first event of a key sequence (or not reading a key sequence).
user-visible, such as X selection_request events. */
if (input_pending
|| detect_input_pending_run_timers (0))
- swallow_events (0); /* May clear input_pending. */
+ swallow_events (false); /* May clear input_pending. */
/* Redisplay if no pending input. */
- while (!input_pending)
+ while (!(input_pending
+ && (input_was_pending || !redisplay_dont_pause)))
{
+ input_was_pending = input_pending;
if (help_echo_showing_p && !EQ (selected_window, minibuf_window))
redisplay_preserve_echo_area (5);
else
/* Input arrived and pre-empted redisplay.
Process any events which are not user-visible. */
- swallow_events (0);
+ swallow_events (false);
/* If that cleared input_pending, try again to redisplay. */
}
exit:
RESUME_POLLING;
+ input_was_pending = input_pending;
RETURN_UNGCPRO (c);
}
&& event->part == scroll_bar_handle
&& event->modifiers == 0)
#endif
- )
+ && !((flags & READABLE_EVENTS_FILTER_EVENTS)
+ && event->kind == BUFFER_SWITCH_EVENT))
return 1;
event++;
if (event == kbd_buffer + KBD_BUFFER_SIZE)
}
}
+/* Limit help event positions to this range, to avoid overflow problems. */
+#define INPUT_EVENT_POS_MAX \
+ ((ptrdiff_t) min (PTRDIFF_MAX, min (TYPE_MAXIMUM (Time) / 2, \
+ MOST_POSITIVE_FIXNUM)))
+#define INPUT_EVENT_POS_MIN (-1 - INPUT_EVENT_POS_MAX)
+
+/* Return a Time that encodes position POS. POS must be in range. */
+
+static Time
+position_to_Time (ptrdiff_t pos)
+{
+ eassert (INPUT_EVENT_POS_MIN <= pos && pos <= INPUT_EVENT_POS_MAX);
+ return pos;
+}
+
+/* Return the position that ENCODED_POS encodes.
+ Avoid signed integer overflow. */
+
+static ptrdiff_t
+Time_to_position (Time encoded_pos)
+{
+ if (encoded_pos <= INPUT_EVENT_POS_MAX)
+ return encoded_pos;
+ Time encoded_pos_min = INPUT_EVENT_POS_MIN;
+ eassert (encoded_pos_min <= encoded_pos);
+ ptrdiff_t notpos = -1 - encoded_pos;
+ return -1 - notpos;
+}
/* Generate a HELP_EVENT input_event and store it in the keyboard
buffer.
{
struct input_event event;
- EVENT_INIT (event);
-
event.kind = HELP_EVENT;
event.frame_or_window = frame;
event.arg = object;
event.x = WINDOWP (window) ? window : frame;
event.y = help;
- event.code = pos;
+ event.timestamp = position_to_Time (pos);
kbd_buffer_store_event (&event);
}
event.arg = Qnil;
event.x = Qnil;
event.y = help;
- event.code = 0;
+ event.timestamp = 0;
kbd_buffer_store_event (&event);
}
Lisp_Object obj;
#ifdef subprocesses
- if (kbd_on_hold_p () && kbd_buffer_nr_stored () < KBD_BUFFER_SIZE/4)
+ if (kbd_on_hold_p () && kbd_buffer_nr_stored () < KBD_BUFFER_SIZE / 4)
{
/* Start reading input again because we have processed enough to
be able to accept new events again. */
frame = event->frame_or_window;
object = event->arg;
- position = make_number (event->code);
+ position = make_number (Time_to_position (event->timestamp));
window = event->x;
help = event->y;
clear_event (event);
old_timers_run = timers_run;
get_input_pending (READABLE_EVENTS_DO_TIMERS_NOW);
- if (timers_run != old_timers_run && do_display)
+ if (!input_pending && timers_run != old_timers_run && do_display)
redisplay_preserve_echo_area (7);
}
\f
vector = XVECTOR (timer)->contents;
if (! NILP (vector[0]))
return 0;
+ if (! INTEGERP (vector[2]))
+ return false;
- return (decode_time_components (vector[1], vector[2], vector[3], vector[8],
- result, 0)
- && timespec_valid_p (*result));
+ struct lisp_time t;
+ if (! decode_time_components (vector[1], vector[2], vector[3], vector[8],
+ &t, 0))
+ return false;
+ *result = lisp_to_timespec (t);
+ return timespec_valid_p (*result);
}
static Lisp_Object Qabove_handle, Qhandle, Qbelow_handle;
static Lisp_Object Qbefore_handle, Qhorizontal_handle, Qafter_handle;
Lisp_Object Qup, Qdown, Qtop, Qbottom;
-Lisp_Object Qleft, Qright;
static Lisp_Object Qleftmost, Qrightmost;
static Lisp_Object Qend_scroll;
static Lisp_Object Qratio;
-/* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
+/* An array of scroll bar parts, indexed by an enum scroll_bar_part value.
+ Note that Qnil corresponds to scroll_bar_nowhere and should not appear
+ in Lisp events. */
static Lisp_Object *const scroll_bar_parts[] = {
- &Qabove_handle, &Qhandle, &Qbelow_handle,
+ &Qnil, &Qabove_handle, &Qhandle, &Qbelow_handle,
&Qup, &Qdown, &Qtop, &Qbottom, &Qend_scroll, &Qratio,
&Qbefore_handle, &Qhorizontal_handle, &Qafter_handle,
&Qleft, &Qright, &Qleftmost, &Qrightmost, &Qend_scroll, &Qratio
&object, &dx, &dy, &width, &height);
if (STRINGP (string))
string_info = Fcons (string, make_number (charpos));
+ xret = wx;
yret = wy - WINDOW_HEADER_LINE_HEIGHT (w);
}
else if (part == ON_LEFT_FRINGE)
{
posn = Qleft_fringe;
col = 0;
+ xret = wx;
dx = wx
- (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? 0 : window_box_width (w, LEFT_MARGIN_AREA));
{
posn = Qright_fringe;
col = 0;
+ xret = wx;
dx = wx
- window_box_width (w, LEFT_MARGIN_AREA)
- window_box_width (w, TEXT_AREA)
posn = Qvertical_line;
width = 1;
dx = 0;
+ xret = wx;
+ dy = yret = wy;
+ }
+ else if (part == ON_VERTICAL_SCROLL_BAR)
+ {
+ posn = Qvertical_scroll_bar;
+ width = WINDOW_SCROLL_BAR_AREA_WIDTH (w);
+ dx = xret = wx;
+ dy = yret = wy;
+ }
+ else if (part == ON_HORIZONTAL_SCROLL_BAR)
+ {
+ posn = Qhorizontal_scroll_bar;
+ width = WINDOW_SCROLL_BAR_AREA_HEIGHT (w);
+ dx = xret = wx;
dy = yret = wy;
}
- /* Nothing special for part == ON_SCROLL_BAR. */
else if (part == ON_RIGHT_DIVIDER)
{
posn = Qright_divider;
extra_info)));
}
else if (f != 0)
- XSETFRAME (window, f);
+ {
+ /* Return mouse pixel coordinates here. */
+ XSETFRAME (window, f);
+ xret = XINT (x);
+ yret = XINT (y);
+ }
else
window = Qnil;
#endif
}
+/* Build the part of Lisp event which represents scroll bar state from
+ EV. TYPE is one of Qvertical_scroll_bar or Qhorizontal_scroll_bar. */
+
+static Lisp_Object
+make_scroll_bar_position (struct input_event *ev, Lisp_Object type)
+{
+ return list5 (ev->frame_or_window, type, Fcons (ev->x, ev->y),
+ make_number (ev->timestamp), *scroll_bar_parts[ev->part]);
+}
+
/* Given a struct input_event, build the lisp event which represents
it. If EVENT is 0, build a mouse movement event from the mouse
movement buffer, which should have a movement event in it.
ARRAYELTS (iso_lispy_function_keys));
#endif
- /* Handle system-specific or unknown keysyms. */
- if (event->code & (1 << 28)
- || event->code - FUNCTION_KEY_OFFSET < 0
- || (event->code - FUNCTION_KEY_OFFSET
- >= ARRAYELTS (lispy_function_keys))
- || !lispy_function_keys[event->code - FUNCTION_KEY_OFFSET])
- {
- /* We need to use an alist rather than a vector as the cache
- since we can't make a vector long enough. */
- if (NILP (KVAR (current_kboard, system_key_syms)))
- kset_system_key_syms (current_kboard, Fcons (Qnil, Qnil));
- return modify_event_symbol (event->code,
- event->modifiers,
- Qfunction_key,
- KVAR (current_kboard, Vsystem_key_alist),
- 0, &KVAR (current_kboard, system_key_syms),
- PTRDIFF_MAX);
- }
-
- return modify_event_symbol (event->code - FUNCTION_KEY_OFFSET,
+ if ((FUNCTION_KEY_OFFSET <= event->code
+ && (event->code
+ < FUNCTION_KEY_OFFSET + ARRAYELTS (lispy_function_keys)))
+ && lispy_function_keys[event->code - FUNCTION_KEY_OFFSET])
+ return modify_event_symbol (event->code - FUNCTION_KEY_OFFSET,
+ event->modifiers,
+ Qfunction_key, Qnil,
+ lispy_function_keys, &func_key_syms,
+ ARRAYELTS (lispy_function_keys));
+
+ /* Handle system-specific or unknown keysyms.
+ We need to use an alist rather than a vector as the cache
+ since we can't make a vector long enough. */
+ if (NILP (KVAR (current_kboard, system_key_syms)))
+ kset_system_key_syms (current_kboard, Fcons (Qnil, Qnil));
+ return modify_event_symbol (event->code,
event->modifiers,
- Qfunction_key, Qnil,
- lispy_function_keys, &func_key_syms,
- ARRAYELTS (lispy_function_keys));
+ Qfunction_key,
+ KVAR (current_kboard, Vsystem_key_alist),
+ 0, &KVAR (current_kboard, system_key_syms),
+ PTRDIFF_MAX);
#ifdef HAVE_NTGUI
case MULTIMEDIA_KEY_EVENT:
}
#ifndef USE_TOOLKIT_SCROLL_BARS
else
- {
- /* It's a scrollbar click. */
- Lisp_Object window;
- Lisp_Object portion_whole;
- Lisp_Object part;
-
- window = event->frame_or_window;
- portion_whole = Fcons (event->x, event->y);
- part = *scroll_bar_parts[(int) event->part];
-
- position = list5 (window, Qvertical_scroll_bar,
- portion_whole, make_number (event->timestamp),
- part);
- }
+ /* It's a scrollbar click. */
+ position = make_scroll_bar_position (event, Qvertical_scroll_bar);
#endif /* not USE_TOOLKIT_SCROLL_BARS */
if (button >= ASIZE (button_down_location))
case SCROLL_BAR_CLICK_EVENT:
{
- Lisp_Object position, head, window, portion_whole, part;
-
- window = event->frame_or_window;
- portion_whole = Fcons (event->x, event->y);
- part = *scroll_bar_parts[(int) event->part];
+ Lisp_Object position, head;
- position = list5 (window, Qvertical_scroll_bar, portion_whole,
- make_number (event->timestamp), part);
+ position = make_scroll_bar_position (event, Qvertical_scroll_bar);
/* Always treat scroll bar events as clicks. */
event->modifiers |= click_modifier;
case HORIZONTAL_SCROLL_BAR_CLICK_EVENT:
{
- Lisp_Object position, head, window, portion_whole, part;
+ Lisp_Object position, head;
- window = event->frame_or_window;
- portion_whole = Fcons (event->x, event->y);
- part = *scroll_bar_parts[(int) event->part];
-
- position = list5 (window, Qhorizontal_scroll_bar, portion_whole,
- make_number (event->timestamp), part);
+ position = make_scroll_bar_position (event, Qhorizontal_scroll_bar);
/* Always treat scroll bar events as clicks. */
event->modifiers |= click_modifier;
in the current keymaps, or nil where it is not a prefix. */
Lisp_Object *maps;
+ Lisp_Object mapsbuf[3];
Lisp_Object def, tail;
ptrdiff_t mapno;
Lisp_Object oquit;
+ USE_SAFE_ALLOCA;
+
/* In order to build the menus, we need to call the keymap
accessors. They all call QUIT. But this function is called
during redisplay, during which a quit is fatal. So inhibit
&& !NILP (Voverriding_local_map))
{
/* Yes, use them (if non-nil) as well as the global map. */
- maps = alloca (3 * sizeof (maps[0]));
+ maps = mapsbuf;
nmaps = 0;
if (!NILP (KVAR (current_kboard, Voverriding_terminal_local_map)))
maps[nmaps++] = KVAR (current_kboard, Voverriding_terminal_local_map);
Lisp_Object tem;
ptrdiff_t nminor;
nminor = current_minor_maps (NULL, &tmaps);
- maps = alloca ((nminor + 4) * sizeof *maps);
+ SAFE_NALLOCA (maps, 1, nminor + 4);
nmaps = 0;
tem = KVAR (current_kboard, Voverriding_terminal_local_map);
if (!NILP (tem) && !NILP (Voverriding_local_map_menu_flag))
}
Vinhibit_quit = oquit;
+ SAFE_FREE ();
return menu_bar_items_vector;
}
\f
{ /* This is a command. See if there is an equivalent key binding. */
Lisp_Object keyeq = AREF (item_properties, ITEM_PROPERTY_KEYEQ);
+ AUTO_STRING (space_space, " ");
/* The previous code preferred :key-sequence to :keys, so we
preserve this behavior. */
if (STRINGP (keyeq) && !CONSP (keyhint))
- keyeq = concat2 (build_string (" "), Fsubstitute_command_keys (keyeq));
+ keyeq = concat2 (space_space, Fsubstitute_command_keys (keyeq));
else
{
Lisp_Object prefix = keyeq;
if (STRINGP (XCDR (prefix)))
tem = concat2 (tem, XCDR (prefix));
}
- keyeq = concat2 (build_string (" "), tem);
- /* keyeq = concat3(build_string(" ("),tem,build_string(")")); */
+ keyeq = concat2 (space_space, tem);
}
else
keyeq = Qnil;
tool_bar_items (Lisp_Object reuse, int *nitems)
{
Lisp_Object *maps;
+ Lisp_Object mapsbuf[3];
ptrdiff_t nmaps, i;
Lisp_Object oquit;
Lisp_Object *tmaps;
+ USE_SAFE_ALLOCA;
*nitems = 0;
&& !NILP (Voverriding_local_map))
{
/* Yes, use them (if non-nil) as well as the global map. */
- maps = alloca (3 * sizeof *maps);
+ maps = mapsbuf;
nmaps = 0;
if (!NILP (KVAR (current_kboard, Voverriding_terminal_local_map)))
maps[nmaps++] = KVAR (current_kboard, Voverriding_terminal_local_map);
Lisp_Object tem;
ptrdiff_t nminor;
nminor = current_minor_maps (NULL, &tmaps);
- maps = alloca ((nminor + 4) * sizeof *maps);
+ SAFE_NALLOCA (maps, 1, nminor + 4);
nmaps = 0;
tem = KVAR (current_kboard, Voverriding_terminal_local_map);
if (!NILP (tem) && !NILP (Voverriding_local_map_menu_flag))
Vinhibit_quit = oquit;
*nitems = ntool_bar_items / TOOL_BAR_ITEM_NSLOTS;
+ SAFE_FREE ();
return tool_bar_items_vector;
}
read_char_minibuf_menu_prompt (int commandflag,
Lisp_Object map)
{
- register Lisp_Object name;
+ Lisp_Object name;
ptrdiff_t nlength;
/* FIXME: Use the minibuffer's frame width. */
ptrdiff_t width = FRAME_COLS (SELECTED_FRAME ()) - 4;
/* Insert button prefix. */
Lisp_Object selected
= AREF (item_properties, ITEM_PROPERTY_SELECTED);
+ AUTO_STRING (radio_yes, "(*) ");
+ AUTO_STRING (radio_no , "( ) ");
+ AUTO_STRING (check_yes, "[X] ");
+ AUTO_STRING (check_no , "[ ] ");
if (EQ (tem, QCradio))
- tem = build_string (NILP (selected) ? "(*) " : "( ) ");
+ tem = NILP (selected) ? radio_yes : radio_no;
else
- tem = build_string (NILP (selected) ? "[X] " : "[ ] ");
+ tem = NILP (selected) ? check_yes : check_no;
s = concat2 (tem, s);
}
? Qt : Qnil);
}
-DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0,
- doc: /* Return vector of last 300 events, not counting those from keyboard macros. */)
- (void)
+DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 1, 0,
+ doc: /* Return vector of last few events, not counting those from keyboard macros.
+If INCLUDE-CMDS is non-nil, include the commands that were run,
+represented as events of the form (nil . COMMAND). */)
+ (Lisp_Object include_cmds)
{
- Lisp_Object *keys = XVECTOR (recent_keys)->contents;
- Lisp_Object val;
+ bool cmds = !NILP (include_cmds);
- if (total_keys < NUM_RECENT_KEYS)
- return Fvector (total_keys, keys);
+ if (!total_keys
+ || (cmds && total_keys < NUM_RECENT_KEYS))
+ return Fvector (total_keys,
+ XVECTOR (recent_keys)->contents);
else
{
- val = Fvector (NUM_RECENT_KEYS, keys);
- vcopy (val, 0, keys + recent_keys_index,
- NUM_RECENT_KEYS - recent_keys_index);
- vcopy (val, NUM_RECENT_KEYS - recent_keys_index,
- keys, recent_keys_index);
- return val;
+ Lisp_Object es = Qnil;
+ int i = (total_keys < NUM_RECENT_KEYS
+ ? 0 : recent_keys_index);
+ eassert (recent_keys_index < NUM_RECENT_KEYS);
+ do
+ {
+ Lisp_Object e = AREF (recent_keys, i);
+ if (cmds || !CONSP (e) || !NILP (XCAR (e)))
+ es = Fcons (e, es);
+ if (++i >= NUM_RECENT_KEYS)
+ i = 0;
+ } while (i != recent_keys_index);
+ es = Fnreverse (es);
+ return Fvconcat (1, &es);
}
}
with a window system; but suspend should be disabled in that case. */
get_tty_size (fileno (CURTTY ()->input), &width, &height);
if (width != old_width || height != old_height)
- change_frame_size (SELECTED_FRAME (), width, height
- - FRAME_MENU_BAR_LINES (SELECTED_FRAME ()), 0, 0, 0, 0);
+ change_frame_size (SELECTED_FRAME (), width,
+ height - FRAME_MENU_BAR_LINES (SELECTED_FRAME ()),
+ 0, 0, 0, 0);
/* Run suspend-resume-hook. */
hook = intern ("suspend-resume-hook");
handle_interrupt_signal (int sig)
{
/* See if we have an active terminal on our controlling tty. */
- struct terminal *terminal = get_named_tty ("/dev/tty");
+ struct terminal *terminal = get_named_terminal ("/dev/tty");
if (!terminal)
{
/* If there are no frames there, let's pretend that we are a
cancel_echoing ();
/* XXX This code needs to be revised for multi-tty support. */
- if (!NILP (Vquit_flag) && get_named_tty ("/dev/tty"))
+ if (!NILP (Vquit_flag) && get_named_terminal ("/dev/tty"))
{
if (! in_signal_handler)
{
See also `current-input-mode'. */)
(Lisp_Object flow, Lisp_Object terminal)
{
- struct terminal *t = get_terminal (terminal, 1);
+ struct terminal *t = decode_tty_terminal (terminal);
struct tty_display_info *tty;
- if (t == NULL || (t->type != output_termcap && t->type != output_msdos_raw))
+
+ if (!t)
return Qnil;
tty = t->display_info.tty;
See also `current-input-mode'. */)
(Lisp_Object meta, Lisp_Object terminal)
{
- struct terminal *t = get_terminal (terminal, 1);
+ struct terminal *t = decode_tty_terminal (terminal);
struct tty_display_info *tty;
int new_meta;
- if (t == NULL || (t->type != output_termcap && t->type != output_msdos_raw))
+ if (!t)
return Qnil;
tty = t->display_info.tty;
See also `current-input-mode'. */)
(Lisp_Object quit)
{
- struct terminal *t = get_named_tty ("/dev/tty");
+ struct terminal *t = get_named_terminal ("/dev/tty");
struct tty_display_info *tty;
- if (t == NULL || (t->type != output_termcap && t->type != output_msdos_raw))
+
+ if (!t)
return Qnil;
tty = t->display_info.tty;
Vlispy_mouse_stem = build_pure_c_string ("mouse");
staticpro (&Vlispy_mouse_stem);
+ regular_top_level_message = build_pure_c_string ("Back to top level");
+#ifdef HAVE_STACK_OVERFLOW_HANDLING
+ recover_top_level_message
+ = build_pure_c_string ("Re-entering top level after C stack overflow");
+#endif
+ DEFVAR_LISP ("internal--top-level-message", Vinternal__top_level_message,
+ doc: /* Message displayed by `normal-top-level'. */);
+ Vinternal__top_level_message = regular_top_level_message;
+
/* Tool-bars. */
DEFSYM (QCimage, ":image");
DEFSYM (Qhelp_echo, "help-echo");
DEFSYM (Qpolling_period, "polling-period");
- DEFSYM (Qx_set_selection, "x-set-selection");
+ DEFSYM (Qgui_set_selection, "gui-set-selection");
DEFSYM (QPRIMARY, "PRIMARY");
DEFSYM (Qhandle_switch_frame, "handle-switch-frame");
DEFSYM (Qhandle_select_window, "handle-select-window");
- we enter the second prompt.
current-prefix-arg is non-nil, prefix-arg is nil.
- before running the first real event, we run the special iconify-frame
- event, but we pass the `special' arg to execute-command so
+ event, but we pass the `special' arg to command-execute so
current-prefix-arg and prefix-arg are left untouched.
- here we foolishly copy the non-nil current-prefix-arg to prefix-arg.
- the next key event will have a spuriously non-nil current-prefix-arg. */