short-circuit and just return unless UNIQUE is nil. This makes passing
UNIQUE=t equivalent to (rename-buffer (generate-new-buffer-name NAME)).
This is useful way to rename the buffer automatically so you can create
another with the original name.
it to nil, unless we find the current buffer.
(Flist_buffers): Don't try to set point in the buffer list unless
list_buffers_1 actually returns an integer. Don't use a full
save_excursion; just save and restore the buffer.
any visible frame.
* buffer.c (Fother_buffer): Pass Qt as the second argument
to Fget_buffer_window.
* window.c (window_loop): In GET_BUFFER_WINDOW case, ignore
non-visible frames.
(Fget_buffer_window): Change doc string to mention that passing Qt
for the FRAME argument returns windows on visible frames only.
any visible frame.
* buffer.c (Fother_buffer): Pass Qvisible as the second argument
to Fget_buffer_window.
* window.c (Qvisible): New symbol.
(window_loop): In GET_BUFFER_WINDOW case, if frames is Qvisible,
ignore non-visible frames.
(Fget_buffer_window): Expand doc string to mention that Qvisible
is an interesting value for FRAME argument.
(syms_of_window): Init and staticpro Qvisible.
* lisp.h (Qvisible): New declaration.
BUFFER argument has been omitted, put it in the current buffer,
for symmetry with move-marker.
* buffer.c (Fdelete_overlay): Make the overlay's markers point
nowhere, not at 1. Do this after calling redisplay_region, so
that code knows what section has changed.
(OVERLAYP): New predicate.
(CHECK_OVERLAY): New type-checker.
(Qoverlayp): New extern declaration.
* buffer.c (Foverlayp): New function.
(Qoverlayp): New atom.
(overlays_at, recenter_overlay_lists): Abort if we encounter an
invalid overlay.
(syms_of_buffer): defsubr Soverlayp; initialize Qoverlayp.
(Fdelete_overlay): Set the overlay's markers to point nowhere.
Use CHECK_OVERLAY instead of signalling a special error.
(Fmove_overlay, Foverlay_put): Use CHECK_OVERLAY instead of
signalling a special error.
(Foverlay_get): Use CHECK_OVERLAY.
* fns.c (internal_equal): Define this for overlays.
* buffer.h (OVERLAY_VALID): Define in terms of OVERLAYP.
* print.c (print): Give overlays their own print syntax.
* alloc.c (mark_object): Treat overlays like conses.
* buffer.c (Foverlay_get): Return Qnil if the requested property
is missing from the property list.
* xdisp.c (redisplay_region): New function.
* buffer.c (Fmove_overlay): Call redisplay_region on the areas the
overlay has enclosed or left.
(Fdelete_overlay): Call redisplay_region on the area the overlay
used to occupy.
(Foverlay_put): Call redisplay_region on the area the overlay now
occupies; we may have put a face property on it.
* buffer.c (Fmove_overlay): Doc fix.
* buffer.c (Fmake_overlay, Fmove_overlay): New optional BUFFER
arguments.
(recenter_overlay_lists): New argument BUF, to use instead of the
current buffer.
(Foverlay_recenter): Pass the appropriate arguments to
recenter_overlay_lists.
* buffer.c (Fdelete_overlay): Don't assume that overlay is in the
current buffer. Don't forget to declare the argument a Lisp_Object.
arguments.
(recenter_overlay_lists): New argument BUF, to use instead of the
current buffer.
(Foverlay_recenter): Pass the appropriate arguments to
recenter_overlay_lists.
* buffer.c (Fdelete_overlay): Don't assume that overlay is in the
current buffer. Don't forget to declare the argument a Lisp_Object.
This isn't specific to X, and it allows us to avoid #including
xterm.h in files that don't really have anything to do with X.
* blockinput.h: New file.
* xterm.h (BLOCK_INPUT, UNBLOCK_INPUT, TOTALLY_UNBLOCK_INPUT,
UNBLOCK_INPUT_RESIGNAL): These are now in blockinput.h.
(x_input_blocked, x_pending_input): Deleted; there are analogs
in blockinput.h called interrupt_input_blocked and
interrupt_input_pending.
* keyboard.c (interrupt_input_blocked, interrupt_input_pending):
New variables, used by the macros in blockinput.h.
* xterm.c: #include blockinput.h.
(x_input_blocked, x_pending_input): Deleted.
(XTread_socket): Test and set interrupt_input_blocked and
interrupt_input_pending instead of the old variables.
* alloc.c, xfaces.c, xfns.c, xmenu.c, xselect.c, keymap.c:
#include blockinput.h.
* eval.c: #include blockinput.h instead of xterm.h.
* keyboard.c: #include blockinput.h.
(input_poll_signal): Just test
interrupt_input_blocked, instead of testing HAVE_X_WINDOWS and
x_input_blocked.
Block the processing of interrupt input while we're manipulating the
malloc heap.
* alloc.c: (xfree): New function, to make it easy to free things
safely.
(xmalloc, xrealloc): Block X input while doing the deed.
(VALIDATE_LISP_STORAGE, gc_sweep, compact_strings): Use xfree
instead of free.
(uninterrupt_malloc): New function, to install input-blocking
hooks into the GNU malloc routines.
* emacs.c [not SYSTEM_MALLOC] (main): Call uninterrupt_malloc
on startup.
* alloc.c: (make_interval, make_float, Fcons, Fmake_vector,
Fmake_symbol, Fmake_marker, make_uninit_string, Fgarbage_collect):
Use xmalloc instead of malloc; don't bother to check if out of
memory here.
(Fgarbage_collect): Call xrealloc instead of realloc.
* buffer.c: Use xmalloc and xfree instead of malloc and free;
don't bother to check if out of memory here.
(Fget_buffer_create): Put BLOCK_INPUT/UNBLOCK_INPUT pair around
calls to ralloc routines.
* insdel.c: Same.
* lisp.h (xfree): New extern declaration.
* xfaces.c (xfree): Don't #define this to be free; use the
definition in alloc.c.
* dispnew.c, doc.c, doprnt.c, fileio.c, lread.c, term.c, xfns.c,
xmenu.c, xterm.c: Use xfree instead of free.
* hftctl.c: Use xfree and xmalloc instead of free and malloc.
* keymap.c (current_minor_maps): BLOCK_INPUT while calling realloc
and malloc.
* search.c: Since the regexp routines can malloc, BLOCK_INPUT
while runing them. #include blockinput.h.
* sysdep.c: #include blockinput.h. Call xfree and xmalloc instead
of free and malloc. BLOCK_INPUT around routines which we know
will call malloc.
ymakefile (keyboard.o, keymap.o, search.o, sysdep.o, xfaces.o,
xfns.o, xmenu.o, xterm.o, xselect.o, alloc.o, eval.o): Note that
these depend on blockinput.h.
wrong feature.
(Qoverwrite_mode_binary): New variable.
(internal_self_insert): If current_buffer->overwrite_mode is
`overwrite-mode-binary', do as overwrite_binary_mode used to.
(syms_of_cmds): Remove defvar of overwrite_binary_mode; initialize
Qoverwrite_mode_binary.
* buffer.c (syms_of_buffer): Doc fix for overwrite_mode.
* buffer.h (struct buffer): Doc fix.
