Qnil, Qt, Qnil);
}
-\f
+/* Save current buffer state for `save-excursion' special form.
+ We (ab)use Lisp_Misc_Save_Value to allow explicit free and so
+ offload some work from GC. */
+
Lisp_Object
save_excursion_save (void)
{
- bool visible = (XBUFFER (XWINDOW (selected_window)->buffer)
- == current_buffer);
+ Lisp_Object save, *data = xmalloc (word_size * 4);
+
+ data[0] = Fpoint_marker ();
/* Do not copy the mark if it points to nowhere. */
- Lisp_Object mark = (XMARKER (BVAR (current_buffer, mark))->buffer
- ? Fcopy_marker (BVAR (current_buffer, mark), Qnil)
- : Qnil);
-
- return Fcons (Fpoint_marker (),
- Fcons (mark,
- Fcons (visible ? Qt : Qnil,
- Fcons (BVAR (current_buffer, mark_active),
- selected_window))));
+ data[1] = (XMARKER (BVAR (current_buffer, mark))->buffer
+ ? Fcopy_marker (BVAR (current_buffer, mark), Qnil)
+ : Qnil);
+ /* Selected window if current buffer is shown in it, nil otherwise. */
+ data[2] = ((XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer)
+ ? selected_window : Qnil);
+ data[3] = BVAR (current_buffer, mark_active);
+
+ save = make_save_value (data, 4);
+ XSAVE_VALUE (save)->dogc = 1;
+ return save;
}
+/* Restore saved buffer before leaving `save-excursion' special form. */
+
Lisp_Object
save_excursion_restore (Lisp_Object info)
{
- Lisp_Object tem, tem1, omark, nmark;
+ Lisp_Object tem, tem1, omark, nmark, *data = XSAVE_VALUE (info)->pointer;
struct gcpro gcpro1, gcpro2, gcpro3;
- bool visible_p;
- tem = Fmarker_buffer (XCAR (info));
- /* If buffer being returned to is now deleted, avoid error */
- /* Otherwise could get error here while unwinding to top level
- and crash */
- /* In that case, Fmarker_buffer returns nil now. */
+ tem = Fmarker_buffer (data[0]);
+ /* If we're unwinding to top level, saved buffer may be deleted. This
+ means that all of its markers are unchained and so tem is nil. */
if (NILP (tem))
- return Qnil;
+ goto out;
omark = nmark = Qnil;
GCPRO3 (info, omark, nmark);
Fset_buffer (tem);
/* Point marker. */
- tem = XCAR (info);
+ tem = data[0];
Fgoto_char (tem);
unchain_marker (XMARKER (tem));
/* Mark marker. */
- info = XCDR (info);
- tem = XCAR (info);
+ tem = data[1];
omark = Fmarker_position (BVAR (current_buffer, mark));
if (NILP (tem))
unchain_marker (XMARKER (BVAR (current_buffer, mark)));
unchain_marker (XMARKER (tem));
}
- /* visible */
- info = XCDR (info);
- visible_p = !NILP (XCAR (info));
-
-#if 0 /* We used to make the current buffer visible in the selected window
- if that was true previously. That avoids some anomalies.
- But it creates others, and it wasn't documented, and it is simpler
- and cleaner never to alter the window/buffer connections. */
- tem1 = Fcar (tem);
- if (!NILP (tem1)
- && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer))
- Fswitch_to_buffer (Fcurrent_buffer (), Qnil);
-#endif /* 0 */
-
- /* Mark active */
- info = XCDR (info);
- tem = XCAR (info);
+ /* Mark active. */
+ tem = data[3];
tem1 = BVAR (current_buffer, mark_active);
bset_mark_active (current_buffer, tem);
/* If buffer was visible in a window, and a different window was
selected, and the old selected window is still showing this
buffer, restore point in that window. */
- tem = XCDR (info);
- if (visible_p
+ tem = data[2];
+ if (WINDOWP (tem)
&& !EQ (tem, selected_window)
&& (tem1 = XWINDOW (tem)->buffer,
(/* Window is live... */
Fset_window_point (tem, make_number (PT));
UNGCPRO;
+
+ out:
+
+ free_save_value (info);
return Qnil;
}
return Vsystem_name;
}
-const char *
-get_system_name (void)
-{
- if (STRINGP (Vsystem_name))
- return SSDATA (Vsystem_name);
- else
- return "";
-}
-
DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0,
doc: /* Return the process ID of Emacs, as a number. */)
(void)
else if (!changed)
{
changed = -1;
- modify_region (current_buffer, pos, XINT (end), 0);
+ modify_region_1 (pos, XINT (end), false);
if (! NILP (noundo))
{
pos = XINT (start);
pos_byte = CHAR_TO_BYTE (pos);
end_pos = XINT (end);
- modify_region (current_buffer, pos, end_pos, 0);
+ modify_region_1 (pos, end_pos, false);
cnt = 0;
for (; pos < end_pos; )
DEFUN ("message", Fmessage, Smessage, 1, MANY, 0,
doc: /* Display a message at the bottom of the screen.
-The message also goes into the `*Messages*' buffer.
-\(In keyboard macros, that's all it does.)
+The message also goes into the `*Messages*' buffer, if `message-log-max'
+is non-nil. (In keyboard macros, that's all it does.)
Return the message.
The first argument is a format control string, and the rest are data
if (end1 == start2) /* adjacent regions */
{
- modify_region (current_buffer, start1, end2, 0);
+ modify_region_1 (start1, end2, false);
record_change (start1, len1 + len2);
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
{
USE_SAFE_ALLOCA;
- modify_region (current_buffer, start1, end1, 0);
- modify_region (current_buffer, start2, end2, 0);
+ modify_region_1 (start1, end1, false);
+ modify_region_1 (start2, end2, false);
record_change (start1, len1);
record_change (start2, len2);
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
{
USE_SAFE_ALLOCA;
- modify_region (current_buffer, start1, end2, 0);
+ modify_region_1 (start1, end2, false);
record_change (start1, (end2 - start1));
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
USE_SAFE_ALLOCA;
record_change (start1, (end2 - start1));
- modify_region (current_buffer, start1, end2, 0);
+ modify_region_1 (start1, end2, false);
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
HCoop / bpt / emacs.git / blobdiff