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(Finsert_file_contents): Likewise.

(Fread_file_name): If defalt is nil and user tries to use it, signal an error.

if we did not call prepare_to_modify_buffer.

files or symlink files.

(Vwrite_region_annotate_functions): New variable.
(Qcar_less_than_car): New variable.
(Fcar_less_than_car): New function.
(syms_of_fileio): Make Lisp variables and function available.
staticpro Qcar_less_than_car.
(a_write, build_annotations): New functions.
(Fwrite_region): Call them.
(Finsert_file_contents): Run the Vafter_insert_file_functions.

if inserting zero characters.

t to copy-file, never an integer.

	arguments to the file name handler; use call2, not call3.

the filename as an argument.

(Fwrite_region): Use call6.
(Frename_file): Look for handler for newname.
(Fadd_name_to_file): Pass arg ok_if_already_exists to handler.
(Fmake_symbolic_link): Likewise.
(Ffile_newer_than_file_p): Check both file names for handler.

	* eval.c (call4): New function.

(Fset_visited_file_modtime): Use the proper operation.

even if !insert_default_directory.

	ro_fsys, not XSTRING (foo).

	string.

        filesystem being ro, since Solaris 2.1 doesn't.
        (file-writable-p): Call ro_fsys.
	* s/sol2.h (SOLARIS_BROKEN_ACCESS): Define this.

	the link's filename, delete the file which the link
	would replace, not the file the link would point at.

	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.

before expanding it.  But avoid unneeded or infinite recursive expand.

(Fwrite_region): Set visit_file after expanding file arg.
Also expand VISIT arg if specified.

	(Fwrite_region): Use HAVE_FSYNC.
	* s-aix3-2.h (HAVE_FSYNC): Define.

(Fset_visited_file_modtime): Accept an argument specifying time value.
If arg is nil, really use the filename handler.

	users that buffers have shrunk a lot.  This is called when Emacs
	is crashing, so we don't want to run any code that isn't
	absolutely necessary.  Also, autosave buffers which don't have
	specially handled autosave file names first.

	* fileio.c (Fexpand_file_name): Pass DEFALT through
	Fexpand_file_name before using it.

	* fileio.c (Fexpand_file_name): Doc fix.

	described in doc string.