(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.
* lisp.h (FLOATP): Define this appropriately when LISP_FLOAT_TYPE
is not defined.
case we need them.
* termhooks.h (alt_modifier, super_modifier, hyper_modifier,
shift_modifier, ctrl_modifier, meta_modifier): Define these in
terms of the CHAR_mumble macros, to avoid having the same thing
defined in two places.
Arrange for Fy_or_n_p to put off switch-frame events.
* lread.c (read_filtered_char): New function, which contains the
code which used to be in Fread_char, Fread_event, and
Fread_char_exclusive; there was a lot of common code.
(Fread_char, Fread_event, Fread_char_exclusive): Rewrite in terms
of read_filtered_char.
* lisp.h (read_filtered_char): Declare this extern here.
* fns.c (Fy_or_n_p): Call read_filtered_char, arranging to delay
switch-frame events.
Make the modifier manipulation functions more robust. The old way
caused a bug once, and probably would again.
* termhooks.h (alt_modifier, super_modifier, hyper_modifier,
shift_modifier, ctrl_modifier, meta_modifier): Shift these all
down one bit in value, to avoid sign extension problems.
* lisp.h (CHAR_META, CHAR_CTL, CHAR_SHIFT): Fix these definitions too.
* keyboard.c (lispy_modifier_list): Ignore modifier bits beyond
what our table of modifier names can handle.
(apply_modifiers): Don't abort if you see extra modifier bits,
just remove them.
* lisp.h (Qrange_error, Qdomain_error, Qsingularity_error,
Qoverflow_error, Qunderflow_error): Add extern to these declarations.
needed whether or not X is defined.
* xselect.c (long_to_cons, cons_to_long): Moved from here...
* data.c (long_to_cons, cons_to_long): ... to here.
* lisp.h (long_to_cons, cons_to_long): Add extern declaration.
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.
floating-point as well as integer arguments. subr.el defines the
former as an alias for the latter.
* data.c (Fnumber_to_string): Renamed from Fint_to_string.
(wrong_type_argument): Adjust caller.
(syms_of_data): Adjust defsubr.
* fns.c (concat): Adjust caller.
* lisp.h (Fnumber_to_string): Adjust extern declaration.
* mocklisp.c (Finsert_string): Adjust caller.
* process.c (status_message): Adjust caller.
(Vinvocation_name): New variable.
(init_cmdargs): Set it.
(syms_of_emacs): defsubr Finvocation_name, staticpro and
initialize Vinvocation_name.
* lisp.h (Vinvocation_name): New extern declaration.
* xterm.c (invocation_name): Variable deleted; use
Vinvocation_name now.
(x_text_icon, x_term_init): Use Vinvocation_name now instead of
invocation_name.
(x_term_init): Don't initialize invocation_name.
(syms_of_xterm): Don't initialize or staticpro invocation_name.
* xfns.c (invocation_name): Remove extern declaration for this.
[HAVE_X11] (Fx_get_resource): Use Vinvocation_name now instead of
invocation_name.
[not HAVE_X11] (Fx_get_default): Same.
* alloc.c, frame.c, frame.h, indent.c, keyboard.c, keyboard.h,
lisp.h, term.c, termhooks.h, window.c, window.h, xdisp.c, xfns.c,
xterm.c, xterm.h: Terminology changed.
* xterm.c (x_window_to_scrollbar, x_scrollbar_expose,
x_scrollbar_handle_click, x_scrollbar_note_movement): Remember
that these can be called during GC; we have to ignore mark bits.
* lisp.h (GC_NILP, GC_EQ): New macros to help with that.
* lisp.h (RETURN_UNGCPRO): Remove "do ... while (0)" wrapper
around macro.
* lisp.h (window_internal_height, window_internal_width): Add
extern declarations for these.
* dispnew.c (direct_output_for_insert, direct_output_forward_char,
buffer_posn_from_coords): Use window_internal_width instead of
writing out its definition.
* indent.c (compute_motion): Doc fix; mention scrollbars and
window_internal_width.
(pos_tab_offset, Fvertical_motion): Use window_internal_width
instead of writing it out.
* window.c (Fpos_visible_in_window_p, Fwindow_width, Fscroll_left,
Fscroll_right): Same.
* xdisp.c (redisplay, try_window, try_window_id,
display_text_line): Same.
* emacs.c (shut_down_emacs): New function.
(fatal_error_signal, Fkill_emacs): Call it, instead of writing it out.
* xterm.c (x_connection_closed): Call shut_down_emacs instead of
Fkill_emacs; the latter will try to perform operations on the X
server and die a horrible death.
* lisp.h (shut_down_emacs): Add extern declaration for it.
Qabove_handle, Qhandle, Qbelow_handle): New symbols.
(make_lispy_event): New code to build scrollbar clicks.
(make_lispy_movement): New code to handle scrollbar movement.
(head_table): Include Qscrollbar_movement in the event heads.
(syms_of_keyboard): Init and staticpro Qvertical_scrollbar,
Qabove_handle, Qhandle, and Qbelow_handle.
* keyboard.h (Qscrollbar_movement): Declare this along with the
other event types.
* lisp.h (Qvertical_scrollbar): Declare this.
* window.c (window_from_scrollbar): New function.
Ffind_file_name_handler, and make it visible to lisp. Add a QUIT
to the loop which scans file-name-handler-alist. All uses
changed.
(syms_of_fileio): Mention this new function in the docstring for
Vfile_name_handler_alist. defsubr Sfind_file_name_handler.
* lisp.h (Ffind_file_name_handler): Added extern declaration.
* dired.c: All uses of find_file_handler changed here too.
Fmake_byte_code, Fverify_visited_file_modtime, Ffile_exists_p,
Fdirectory_file_name, Ffile_name_directory,
expand_and_dir_to_file, Ffile_accessible_directory_p, Fbyte_code,
Fundo_boundary, truncate_undo_list): Add extern declarations for
these.
* lisp.h (DEFVARLISP, DEFVARBOOL, DEFVARINT, DEFVARPERBUFFER):
Removed these definitions; we should be using the versions whose
names use underscores.
of this structure; it is always equal to the poll_suppress_count
of its catchtag structure. The non-local exit code in eval.c is
difficult enough to understand as it is; needless duplication
doesn't help.
* lisp.h (struct specbinding, struct handler): More documentation.
