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2011-10-30  Jan Djärv  <jan.h.d@swipnet.se>

	* xterm.h (x_display_info): Add Xatom_net_wm_state_hidden (Bug#9893).

	* xterm.c: Declare x_handle_net_wm_state to return int.
	(handle_one_xevent): Check if we are iconified but don't have
	_NET_WM_STATE_HIDDEN.  If do, treat as deiconify (Bug#9893).
	(get_current_wm_state): Return non-zero if not hidden,
	check for _NET_WM_STATE_HIDDEN (Bug#9893).
	(do_ewmh_fullscreen): Ignore return value from get_current_wm_state.
	(x_handle_net_wm_state): Return what get_current_wm_state returns.
	(x_term_init): Initialize dpyinfo->Xatom_net_wm_state_hidden.

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2011-10-29  Paul Eggert  <eggert@cs.ucla.edu>

	* alloc.c (which_symbols): Declare EXTERNALLY_VISIBLE,
	so that this new function doesn't get optimized away by a
	whole-program optimizer.  Make the 2nd arg EMACS_INT, not int.

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2011-10-29  Andreas Schwab  <schwab@linux-m68k.org>

	* frame.h (MOUSE_HL_INFO): Remove excess parens.

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2011-10-29  Eli Zaretskii  <eliz@gnu.org>

	Fix the `xbytecode' command.
	* .gdbinit (xprintbytestr): New command.
	(xwhichsymbols): Renamed from `which'; all callers changed.
	(xbytecode): Print the byte-code string as well.

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2011-10-29  Kim Storm  <storm@cua.dk>

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	* alloc.c (which_symbols): New function.

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2011-10-29  Andreas Schwab  <schwab@linux-m68k.org>

	* minibuf.c (read_minibuf_noninteractive): Allow reading empty
	line.  (Bug#9903)

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2011-10-29  Glenn Morris  <rgm@gnu.org>

	* process.c (wait_reading_process_output): Revert 2009-08-30 change.
	Not clear what it was for, and it causes various bugs.  (Bug#9839)

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2011-10-28  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (note_mouse_highlight): Initialize `part', to avoid a
	possible random value that matches one of those tested as
	condition to clear the mouse face.

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2011-10-28  Chong Yidong  <cyd@gnu.org>

	* xdisp.c (note_mouse_highlight): Fix use of uninitialized var.

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2011-10-28  Dan Nicolaescu  <dann@ics.uci.edu>

	* window.c (make_window): Initialize phys_cursor_on_p.

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2011-10-28  Stefan Monnier  <monnier@iro.umontreal.ca>

	* lisp.h (struct Lisp_Symbol): Update comments.

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2011-10-28  Juanma Barranquero  <lekktu@gmail.com>

	* w32font.c (w32_load_unicows_or_gdi32): Add missing return.

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2011-10-28  Eli Zaretskii  <eliz@gnu.org>

	Fix Emacs on Windows 9X (bug#8562).  Thanks to oslsachem
	<oslsachem@gmail.com> for helping to debug this.

	* w32font.c (g_b_init_is_w9x, g_b_init_get_outline_metrics_w)
	(g_b_init_get_text_metrics_w, g_b_init_get_glyph_outline_w)
	(g_b_init_get_glyph_outline_w): New static variables.
	(GetOutlineTextMetricsW_Proc, GetTextMetricsW_Proc)
	(GetGlyphOutlineW_Proc): New typedefs.
	(w32_load_unicows_or_gdi32, get_outline_metrics_w)
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	(get_text_metrics_w, get_glyph_outline_w, globals_of_w32font):
	New functions.
	(w32font_open_internal, compute_metrics):
	Call get_outline_metrics_w, get_text_metrics_w, and get_glyph_outline_w
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	instead of calling the "wide" APIs directly.

	* emacs.c (main) [HAVE_NTGUI]: Call globals_of_w32font.

	* w32.h (syms_of_w32font): Add prototype.

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2011-10-27  Juanma Barranquero  <lekktu@gmail.com>

	* window.c (Fframe_root_window, Fframe_first_window, Fwindow_end)
	(Fframe_selected_window, Ftemp_output_buffer_show, Fnext_window)
	(Fdelete_window_internal, Fwindow_parameters): Fix typos in docstrings.
	(Fmove_to_window_line): Doc fix.

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2011-10-27  Chong Yidong  <cyd@gnu.org>

	* process.c (make_process): Set gnutls_state to NULL.

	* gnutls.c (emacs_gnutls_deinit): Deinit the gnutls_state if it is
	non-NULL, regardless of GNUTLS_INITSTAGE.
	(Fgnutls_boot): Cleanups.  Call emacs_gnutls_deinit if we signal
	an error.  Set process slots as soon as we allocate them.

	* gnutls.h (GNUTLS_LOG, GNUTLS_LOG2): Fix macros.

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2011-10-27  Chong Yidong  <cyd@gnu.org>

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	* gnutls.c (emacs_gnutls_deinit): New function.
	Deallocate credentials structures as well as calling gnutls_deinit.
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	(Fgnutls_deinit, Fgnutls_boot): Use it.

	* process.c (make_process): Initialize GnuTLS credentials to NULL.
	(deactivate_process): Call emacs_gnutls_deinit.

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2011-10-27  Juanma Barranquero  <lekktu@gmail.com>

	* image.c (x_create_x_image_and_pixmap):
	* w32.c (sys_rename, w32_delayed_load):
	* w32font.c (fill_in_logfont):
	* w32reg.c (x_get_string_resource): Silence compiler warnings.

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2011-10-26  Juanma Barranquero  <lekktu@gmail.com>

	* w32fns.c (w32_default_color_map): New function,
	extracted from Fw32_default_color_map.
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	(Fw32_default_color_map, Fx_open_connection): Use it.  (Bug#9785)
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2011-10-25  Paul Eggert  <eggert@cs.ucla.edu>

	* dispextern.h (Fcontrolling_tty_p): New decl (Bug#6649 part 2).

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2011-10-25  Stefan Monnier  <monnier@iro.umontreal.ca>

	* keyboard.c (test_undefined): New function (bug#9751).
	(read_key_sequence): Use it to detect when a key is bound to `undefined'.

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2011-10-25  Enami Tsugutomo  <tsugutomo.enami@jp.sony.com>

	* sysdep.c (init_sys_modes): Fix the check for the controlling
	terminal (Bug#6649).

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2011-10-20  Eli Zaretskii  <eliz@gnu.org>

	* dispextern.h (struct bidi_it): New member next_en_type.

	* bidi.c (bidi_line_init): Initialize the next_en_type member.
	(bidi_resolve_explicit_1): When next_en_pos is valid for the
	current character, check also for next_en_type being WEAK_EN.
	(bidi_resolve_weak): Don't enter the expensive loop if the current
	position is before next_en_pos.  Record the bidi type of the first
	non-ET, non-BN character we find, in addition to its position.
	(bidi_level_of_next_char): Invalidate next_en_type when
	next_en_pos is over-stepped.

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2011-10-20  Paul Eggert  <eggert@cs.ucla.edu>

	Time zone name fixes for non-ASCII locales (Bug#641, Bug#9794)
	* editfns.c: Rewrite current-time-zone so that it invokes
	the equivalent of (format-time-string "%Z") to get the time zone name.
	This fixes a bug when the time zone name contains characters that
	need converting from the system time locale to Emacs internal format.
	This fixes a shortcoming that I introduced in my 1999-10-19 patch:
	that patch fixed format-time-string to do the conversion, but
	I forgot to fix current-time-zone.
	(format_time_string): New function, containing most of
	what Fformat_time_string used to contain.
	(Fformat_time_string): Rewrite in terms of format_time_string.
	This doesn't change this function's behavior.
	(current-time-zone): Rewrite to use format_time_string.
	This fixes the bug reported by Michael Schierl in
	<http://lists.gnu.org/archive/html/emacs-devel/2007-06/msg00334.html>.
	Jason Rumney's 2007-06-07 change worked around this bug, but
	didn't fix it.
	* systime.h (tzname, timezone): Remove no-longer-used declarations.

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2011-10-19  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (start_display): If the character at POS is displayed
	via a display vector, reset IT->current.dpvec_index to zero.
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	(try_window_reusing_current_matrix): If a line ends in a display
	vector or the next line starts in a display vector, continue
	redrawing the window even though the character position of
	start_row was reached.
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	(Bug#9771, part 2)

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2011-10-18  Chong Yidong  <cyd@gnu.org>

	* xdisp.c (get_next_display_element): Handle U+2010 and U+2011
	with nobreak-char-display too.

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2011-10-18  Eli Zaretskii  <eliz@gnu.org>

	Fix part 3 of bug#9771.
	* bidi.c (bidi_line_init): Initialize next_en_pos to zero, not -1.
	(bidi_resolve_neutral): Don't enter the expensive loop looking for
	non-neutral characters if the current character is a paragraph
	separator (a.k.a. Newline).  This avoids running the same
	expensive loop twice, once when we consume the preceding newline
	and the other time when the line actually needs to be displayed.
	Avoid the loop when we see neutrals on the base embedding level
	following a character whose directionality is the same as the
	paragraph's.  This avoids running the expensive loop when a line
	ends in a long sequence of neutrals, like control characters.
	Add assertion against STRONG_AL type.  Slightly rearrange code
	that determines the type of a neutral given the first non-neutral
	that follows it.
	(bidi_level_of_next_char): Set next_en_pos to zero when
	invalidating its info.

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2011-10-17  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (push_display_prop): Determine whether to record string
	or buffer position by IT->string, not by IT->method.  Allow
	GET_FROM_DISPLAY_VECTOR as IT->method on entry.  (Bug#9771, part 4)
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	(move_it_vertically_backward): Don't look for character position
	immediately after the newline when in a continuation line.
	(Bug#9771, part 1)
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2011-10-15  Martin Rudalics  <rudalics@gmx.at>

	* window.c (coordinates_in_window): Rewrite and delabelize
	vertical border check.  (Bug#5357) (Bug#9618)

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2011-10-14  Stefan Monnier  <monnier@iro.umontreal.ca>

	* xterm.c (frame_highlight, frame_unhighlight): Ignore unexplained
	errors in XSetWindowBorder (bug#9310).

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2011-10-13  Dmitry Antipov  <dmantipov@yandex.ru>

	* editfns.c (Fset_time_zone_rule): Replace free with xfree to
	avoid crash when xmalloc overrun checking is enabled.

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2011-10-13  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (Fcurrent_bidi_paragraph_direction): Initialize
	itb.paragraph_dir to NEUTRAL_DIR.  Fixes an occasional incorrect
	cursor motion with <left> and <right> arrow keys.

	* bidi.c (bidi_init_it): Don't initialize paragraph_dir here, as
	some callers set that themselves.

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2011-10-12  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (find_row_edges): Handle the case where ROW comes from a
	display string and the previous row comes from the same string and
	is empty.  (Bug#9739)  (Bug#9738)

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2011-10-12  Stefan Monnier  <monnier@iro.umontreal.ca>

	* doc.c (get_doc_string): Encode file name (bug#9735).

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2011-10-12  Eli Zaretskii  <eliz@gnu.org>

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	* bidi.c (bidi_level_of_next_char):
	* xdisp.c (get_visually_first_element): Remove old incorrect
	comments regarding the Unicode Line Separator character.

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	* bidi.c (bidi_init_it): Initialize paragraph_dir to NEUTRAL_DIR.

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2011-10-12  Dmitry Antipov  <dmantipov@yandex.ru>

	* alloc.c (Fgc_status): Do not access beyond zombies array
	boundary if nzombies > MAX_ZOMBIES.
	* alloc.c (dump_zombies): Add missing format specifier.

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2011-10-12  Paul Eggert  <eggert@cs.ucla.edu>

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	* xdisp.c (set_cursor_from_row): Simplify conditionals,
	to pacify GCC 4.6.1 x86-64 with -O2 -Wstrict-overflow.

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	* lread.c (read_escape): Allow hex escapes as large as ?\xfffffff.
	Some packages use them to denote characters with modifiers.

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2011-10-11  Andreas Schwab  <schwab@linux-m68k.org>

	* lisp.h (GCPRO1_VAR, GCPRO2_VAR, GCPRO3_VAR, GCPRO4_VAR)
	(GCPRO5_VAR, GCPRO6_VAR, UNGCPRO_VAR): Add whitespace to avoid
	matching a pp-number.  Rename parameter var to var1.

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2011-10-11  Stefan Monnier  <monnier@iro.umontreal.ca>

	* minibuf.c (Finternal_complete_buffer): Fix last change (bug#9709).

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2011-10-08  Glenn Morris  <rgm@gnu.org>

	* callint.c (Fcall_interactively): Give a more explicit error for the
	'c' case with a non-character input.  (Bug#8479)

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2011-10-08  Eli Zaretskii  <eliz@gnu.org>

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	* xdisp.c (hscroll_window_tree): Support hscroll in right-to-left
	lines.
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	(set_cursor_from_row): Fix cursor positioning in mixed L2R+R2L
	lines that are hscrolled on the left.
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	* dispnew.c (buffer_posn_from_coords): Account for a possible
	presence of header-line.  (Bug#4426)

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2011-10-07  Stefan Monnier  <monnier@iro.umontreal.ca>

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	* buffer.c (syms_of_buffer) <enable-multibyte-characters>:
	Don't advertise functionality which we discourage or doesn't work.
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2011-10-07  Paul Eggert  <eggert@cs.ucla.edu>

	* alloc.c (GC_LISP_OBJECT_ALIGNMENT): Use offsetof, not __alignof__
	or sizeof.  __alignof__ gives the wrong answer on Fedora x86-64
	with GCC 4.6.1 when configured with CC='gcc -m32' --with-wide-int;
	this makes Emacs dump core during garbage collection on rare
	occasions.  sizeof is obviously inferior to offsetof here, so
	stick with offsetof.
	(GC_POINTER_ALIGNMENT): New macro.
	(mark_memory): Omit 3rd (offset) arg; caller changed.
	Don't assume EMACS_INT alignment is the same as pointer alignment.

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2011-10-03  Stefan Monnier  <monnier@iro.umontreal.ca>

	* keyboard.c (read_key_sequence_remapped): New var.
	(read_key_sequence): Compute remapping in the right buffer.
	(command_loop_1): Use read_key_sequence's remapping directly.

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2011-10-02  Stefan Monnier  <monnier@iro.umontreal.ca>

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	* dired.c (file_name_completion): Don't expand file name.
	(Ffile_name_completion, Ffile_name_all_completions): Expand file name
	before checking file name handler.

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	* minibuf.c (Finternal_complete_buffer): Only show internal buffers if
	they've been requested explicitly (bug#9591).

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2011-10-01  Andreas Schwab  <schwab@linux-m68k.org>
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	* keymap.c (Fsingle_key_description): Use make_specified_string
	instead of build_string to build string from push_key_description.
	(Bug#5193)

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2011-09-30  Paul Eggert  <eggert@cs.ucla.edu>

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	* buffer.h (struct buffer): Use time_t, not int, for a time stamp.
	This fixes a Y2038 bug on 64-bit hosts.
	* buffer.c (reset_buffer):
	* fileio.c (Fdo_auto_save, Fset_buffer_auto_saved)
	(Fclear_buffer_auto_save_failure):
	Use 0, not -1, to represent an unset failure time, since time_t
	might not be signed.

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	Remove dependency on glibc malloc internals.
	* alloc.c (XMALLOC_OVERRUN_CHECK_OVERHEAD, XMALLOC_OVERRUN_CHECK_SIZE):
	Move back here from lisp.h, but with their new implementations.
	(XMALLOC_BASE_ALIGNMENT, COMMON_MULTIPLE, XMALLOC_HEADER_ALIGNMENT)
	(XMALLOC_OVERRUN_SIZE_SIZE): Move these new lisp.h macros here.
	* charset.c (charset_table_init): New static var.
	(syms_of_charset): Use it instead of xmalloc.  This removes a
	dependency on glibc malloc internals.  See Eli Zaretskii's comment in
	<http://lists.gnu.org/archive/html/emacs-devel/2011-09/msg00815.html>.
	* lisp.h (XMALLOC_OVERRUN_CHECK_OVERHEAD, XMALLOC_OVERRUN_CHECK_SIZE):
	Move back to alloc.c.
	(XMALLOC_BASE_ALIGNMENT, COMMON_MULTIPLE, XMALLOC_HEADER_ALIGNMENT)
	(XMALLOC_OVERRUN_SIZE_SIZE): Move to alloc.c.

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2011-09-30  Jan Djärv  <jan.h.d@swipnet.se>

	* nsterm.m (windowDidResize): Call x_set_window_size only when
	ns_in_resize is true.  Otherwise set pixelwidth/height and
	call change_frame_size (Bug#9628).

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2011-09-30  Paul Eggert  <eggert@cs.ucla.edu>

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	Port --enable-checking=all to Fedora 14 x86-64.
	* charset.c (syms_of_charset): Also account for glibc malloc's
	internal overhead when calculating the initial malloc maximum.

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	Port --enable-checking=all to Fedora 14 x86.
	* alloc.c (XMALLOC_OVERRUN_CHECK_OVERHEAD, XMALLOC_OVERRUN_CHECK_SIZE):
	Move to lisp.h.
	(xmalloc_put_size, xmalloc_get_size, overrun_check_malloc)
	(overrun_check_realloc, overrun_check_free):
	Use XMALLOC_OVERRUN_SIZE_SIZE, not sizeof (size_t).
	That way, xmalloc returns a properly-aligned pointer even if
	XMALLOC_OVERRUN_CHECK is defined.  The old debugging code happened
	to align OK on typical 64-bit hosts, but not on Fedora 14 x86.
	* charset.c (syms_of_charset): Take XMALLOC_OVERRUN_CHECK_OVERHEAD
	into account when calculating the initial malloc maximum.
	* lisp.h (XMALLOC_OVERRUN_CHECK_OVERHEAD, XMALLOC_OVERRUN_CHECK_SIZE):
	Move here from alloc.c, so that charset.c can use it too.
	Properly align; the old code wasn't right for common 32-bit hosts
	when configured with --enable-checking=all.
	(XMALLOC_BASE_ALIGNMENT, COMMON_MULTIPLE, XMALLOC_HEADER_ALIGNMENT)
	(XMALLOC_OVERRUN_SIZE_SIZE): New macros.

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2011-09-29  Eli Zaretskii  <eliz@gnu.org>

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	* sysdep.c (snprintf) [!EOVERFLOW]: If EOVERFLOW is not defined,
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	use EDOM.

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2011-09-28  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (compute_display_string_end): If there's no display
	string at CHARPOS, return -1.

	* bidi.c (bidi_fetch_char): When compute_display_string_end
	returns a negative value, treat the character as a normal
	character not covered by a display string.  (Bug#9624)

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2011-09-28  Juanma Barranquero  <lekktu@gmail.com>

	* lread.c (Fread_from_string): Fix typo in docstring.

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2011-09-27  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (handle_invisible_prop): If invisible text ends on a
	newline, reseat the iterator instead of bidi-iterating there one
	character at a time.  (Bug#9610)
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	(BUFFER_POS_REACHED_P, move_it_in_display_line_to): Bail when past
	TO_CHARPOS if the bidi iterator is at base embedding level.
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2011-09-27  Andreas Schwab  <schwab@linux-m68k.org>

	* lread.c (readevalloop): Use correct code for NBSP.
	(read1): Likewise.  (Bug#9608)

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2011-09-25  Michael Albinus  <michael.albinus@gmx.de>

	* dbusbind.c (Fdbus_register_signal): When service is not
	registered, use nil in Vdbus_registered_objects_table.  (Bug#9581)

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2011-09-25  Glenn Morris  <rgm@gnu.org>

	* buffer.c (truncate-lines): Doc fix.

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2011-09-24  Chong Yidong  <cyd@stupidchicken.com>

	* window.c (Fwindow_prev_buffers, Fset_window_prev_buffers)
	(Fset_window_next_buffers): Doc fix.

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2011-09-24  Glenn Morris  <rgm@gnu.org>

	* minibuf.c (read_minibuf): Disable line truncation.  (Bug#5715)

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2011-09-24  Paul Eggert  <eggert@cs.ucla.edu>

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	Fix minor problems found by static checking.
	* xdisp.c (string_from_display_spec): Don't assume vecsize fits in int.
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	* indent.c (Fvertical_motion): Fix == vs = typo.

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2011-09-24  Eli Zaretskii  <eliz@gnu.org>

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	* dispnew.c (syms_of_display) <redisplay-dont-pause>:
	Default value is now t.  Doc fix.
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	* indent.c (Fvertical_motion): Compute and apply the overshoot
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	logic when moving up, not only when moving down.  Fix the
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	confusing name and values of the it_overshoot_expected variable;
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	logic changes accordingly.  (Bug#9254) (Bug#9549)
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	* xdisp.c (pos_visible_p): Produce correct pixel coordinates when
	CHARPOS is covered by a display string which includes newlines.
	(move_it_vertically_backward): Avoid inflooping when START_CHARPOS
	is covered by a display string with embedded newlines.

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2011-09-24  Michael Albinus  <michael.albinus@gmx.de>

	* dbusbind.c (Fdbus_register_signal): Add match rule to
	Vdbus_registered_objects_table.  (Bug#9581)
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	(Fdbus_register_method, Vdbus_registered_objects_table):
	Fix docstring.
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2011-09-24  Jim Meyering  <meyering@redhat.com>

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	do not ignore write error for any output size
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	The previous change was incomplete.
	While it makes emacs --batch detect the vast majority of stdout
	write failures, errors were still ignored whenever the output size is
	k * (BUFSIZ+1) - 4.  E.g., on a system with BUFSIZ of 4096,
	  $ emacs --batch --eval '(print (format "%4093d" 0))' > /dev/full \
	      && echo FAIL: ignored write error
	  FAIL: ignored write error
	  $ emacs --batch --eval '(print (format "%20481d" 0))' > /dev/full \
	      && echo FAIL: ignored write error
	  FAIL: ignored write error
	* emacs.c (Fkill_emacs): Also test ferror.  (Bug#9574)

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2011-09-23  Andreas Schwab  <schwab@linux-m68k.org>

	* emacs.c (Fkill_emacs): In noninteractive mode exit
	non-successfully if a write error occurred on stdout.  (Bug#9574)

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2011-09-21  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (pop_it): Allow it->object that is a cons cell to pass
	the xassert test.

	* dispextern.h (struct it): Update the comment documenting what
	can it->OBJECT be.

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2011-09-20  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (set_cursor_from_row): If the row ends in a newline from
	a display string, extend search for cursor position to end of row.
	(find_row_edges): If the row ends in a newline from a display
	string, increment its MATRIX_ROW_END_CHARPOS by one.  (Bug#9549)
	Handle the case of a display string with multiple newlines.
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	(Fcurrent_bidi_paragraph_direction): Fix search for previous
	non-empty line.  Fixes confusing cursor motion with arrow keys at
	the beginning of a line that starts with whitespace.
507

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2011-09-19  Lars Magne Ingebrigtsen  <larsi@gnus.org>

	* lread.c (Fread_from_string): Document what FINAL-STRING-INDEX is
	(bug#9493).

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2011-09-18  Chong Yidong  <cyd@stupidchicken.com>

	* xfns.c (Fx_create_frame): Handle the bitmapIcon resource as
	boolean (Bug#9154).

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2011-09-18  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (display_line): Record maximum and minimum buffer
	positions even if no glyphs were produced (e.g., by a zero-width
	stretch).  Fixes bug#9530 on a TTY.  Under word-wrap, don't record
	buffer positions that will be removed from the glyph row because
	they don't fit.
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	(produce_stretch_glyph): Fix a bug in :align-to on a TTY when the
	column is beyond frame width: don't subtract 1 "pixel" when
	computing width of the stretch.
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	(reseat_at_next_visible_line_start): Undo the change made on
	2011-09-17 that saved paragraph information and restored it after
	the call to `reseat'.  (Bug#9545)
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2011-09-18  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
533 534 535 536

	* xdisp.c (expose_window): Save original value of phys_cursor_on_p
	and turn window cursor on if cleared (Bug#9415).

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2011-09-18  Andreas Schwab  <schwab@linux-m68k.org>
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	* search.c (boyer_moore): Take unibyte characters from pattern
	literally.  (Bug#9458)

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2011-09-18  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (reseat_at_next_visible_line_start): Fix last change.

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2011-09-18  Paul Eggert  <eggert@cs.ucla.edu>

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	Fix minor problem found by static checking.
	* xdisp.c (reseat_at_next_visible_line_start): Mark locals as
	initialized, to pacify gcc -Wuninitialized.

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	* fileio.c: Report proper errno when syscall falls.
	(Finsert_file_contents): Save and restore errno,
	so that report_file_error outputs the correct diagnostic.
	(Fwrite_region) [CLASH_DETECTION]: Likewise.

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2011-09-18  Eli Zaretskii  <eliz@gnu.org>

	* .gdbinit (pgx): Fix references to fields of `struct glyph'.

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2011-09-17  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (produce_stretch_glyph): Another fix for changes made on
	2011-08-30T17:32:44Z!eliz@gnu.org.  (Bug#9530)

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	* xdisp.c (reseat_at_next_visible_line_start): Keep information
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	about the current paragraph and restore it after the call to reseat.
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	* bidi.c (MAX_PARAGRAPH_SEARCH): New macro.
	(bidi_find_paragraph_start): Search back for paragraph beginning
	at most MAX_PARAGRAPH_SEARCH lines; if not found, return BEGV_BYTE.
	(bidi_move_to_visually_next): Only trigger paragraph-related
	computations when the last character is a newline or at EOB, not
	just any NEUTRAL_B.  (Bug#9470)

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	* xdisp.c (set_cursor_from_row): Don't invoke special treatment of
	truncated lines if point is covered by a display string.  (Bug#9524)

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2011-09-16  Paul Eggert  <eggert@cs.ucla.edu>

	* xselect.c: Relax test for outgoing X longs (Bug#9498).
	(cons_to_x_long): New function.
	(lisp_data_to_selection_data): Use it.  Correct the test for
	short-versus-long data; it was negated.  Break out of vector
	loop, for efficiency, when a long datum is discovered.

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2011-09-16  Stefan Monnier  <monnier@iro.umontreal.ca>

	* eval.c (Fquote): Document its non-consing behavior (bug#9482).

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2011-09-16  Eli Zaretskii  <eliz@gnu.org>

	* image.c (tiff_handler): Work around a bug in MinGW GCC 3.x (see
	GCC PR/17406) by declaring this function with external scope.

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2011-09-15  Paul Eggert  <eggert@cs.ucla.edu>

	* editfns.c (Fformat): Fix bug in text-property fix (Bug#9514).
	Don't mishandle (length (format "%%")) and (format "%4000s%%" "").

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2011-09-15  Andreas Schwab  <schwab@linux-m68k.org>

	* editfns.c (Fformat): Correctly handle text properties on "%%".

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2011-09-15  Eli Zaretskii  <eliz@gnu.org>

	* xterm.c (x_draw_composite_glyph_string_foreground):
	* w32term.c (x_draw_composite_glyph_string_foreground):
	* term.c (encode_terminal_code):
	* composite.c (composition_update_it, get_composition_id):
	* xdisp.c (get_next_display_element)
	(fill_composite_glyph_string): Add comments about special meaning
	of TAB characters in a composition.

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2011-09-15  Paul Eggert  <eggert@cs.ucla.edu>

	* editfns.c (Fformat): Fix off-by-1 bug for "%%b" (Bug#9514).
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	This occurs when processing a multibyte format.
	Problem reported by Wolfgang Jenker.
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2011-09-15  Johan Bockgård  <bojohan@gnu.org>

	* xdisp.c (try_cursor_movement): Only check for exact match if
	cursor hpos found by set_cursor_from_row is valid.  (Bug#9495)

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2011-09-14  Paul Eggert  <eggert@cs.ucla.edu>

	Remove unused external symbols.
	* dispextern.h (calc_pixel_width_or_height): Remove decl.
	* xdisp.c (calc_pixel_width_or_height): Now static.
	* doprnt.c (exprintf) [! (HAVE_X_WINDOWS && USE_X_TOOLKIT)]: Remove.
	* indent.c (check_display_width):
	* w32term.c: Fix comment to match code.
	* xterm.c, xterm.h (x_catching_errors): Remove.

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2011-09-14  Paul Eggert  <eggert@cs.ucla.edu>

	* xselect.c: Use signed conversions more consistently (Bug#9498).
	(selection_data_to_lisp_data): Assume incoming selection data are
	signed integers, not unsigned.  This is to be consistent with
	outgoing selection data, which was modified to use signed integers
	in as part of the fix to Bug#9196 in response to Jan D.'s comment
	in <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9196#32> that X11
	expects long, not unsigned long.

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2011-09-14  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (try_window_reusing_current_matrix): Fix incorrect
	computation of loop end.  Reported by Johan Bockgård
	<bojohan@gnu.org>.

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2011-09-13  Chong Yidong  <cyd@stupidchicken.com>

	* frame.c (Fother_visible_frames_p): Function deleted.

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2011-09-12  Eli Zaretskii  <eliz@gnu.org>

	* indent.c (compute_motion): Process display vector front to back
	rather than the other way around.  (Bug#2496)

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2011-09-12  Stefan Monnier  <monnier@iro.umontreal.ca>

	* fileio.c (Finsert_file_contents): Don't assume beg_offset is 0.

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2011-09-11  Chong Yidong  <cyd@stupidchicken.com>

	* minibuf.c (Fread_from_minibuffer): Doc fix.

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2011-09-11  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (produce_stretch_glyph): Fix a typo made in changes from
	2011-08-30T17:32:44Z!eliz@gnu.org.  (Bug#9475)

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2011-09-11  Lars Magne Ingebrigtsen  <larsi@gnus.org>

	* fileio.c (Fvisited_file_modtime): Document `(-1 65535)' as a
	value for non-existent files.

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2011-09-11  Eli Zaretskii  <eliz@gnu.org>

	* fileio.c (Finsert_file_contents): If the file cannot be opened,
	set its "size" to -1.  This will set the modtime_size field of
	the corresponding buffer to -1, which is what
	verify-visited-file-modtime expects for files that do not exist.
	(Bug#9139)

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2011-09-11  Paul Eggert  <eggert@cs.ucla.edu>

	* keymap.h (KEY_DESCRIPTION_SIZE, push_key_description): Move decls
	here ...
	* lisp.h: ... from here.  push_key_description is no longer
	defined in keyboard.c, so its declaration should not be in
	lisp.h's "Defined in keyboard.c" section, and KEY_DESCRIPTION_SIZE
	logically belongs with push_key_description.

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2011-09-10  Paul Eggert  <eggert@cs.ucla.edu>

	* buffer.h: Include <sys/types.h> instead of <time.h>.
	Otherwise, off_t wasn't defined on FreeBSD 9.0-BETA2 i386.
	Problem reported by Herbert J. Skuhra.

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2011-09-10  Lars Magne Ingebrigtsen  <larsi@gnus.org>

	* xml.c (parse_region): Make the parsing work for
	non-comment-starting XML files again (bug#9144).

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2011-09-10  Andreas Schwab  <schwab@linux-m68k.org>

	* image.c (gif_load): Fix calculation of bottom and right corner.
	(Bug#9468)

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2011-09-10  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (MAX_DISP_SCAN): Decrease to 250.  Prevents sluggish
	redisplay in small windows.

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2011-09-09  Eli Zaretskii  <eliz@gnu.org>

	* frame.c (x_report_frame_params): Cast to avoid compiler warnings.

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2011-09-08  Martin Rudalics  <rudalics@gmx.at>

	* window.c (Fset_window_prev_buffers, Fset_window_next_buffers):
	Operate on live windows only.

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2011-09-08  Juanma Barranquero  <lekktu@gmail.com>

	* emacs.c (my_heap_start): #ifdef to avoid warnings when unused.

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2011-09-07  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (move_it_in_display_line_to): Call RESTORE_IT on ppos_it
	only under bidi iteration.

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2011-09-07  Jan Djärv  <jan.h.d@swipnet.se>

	* gtkutil.c (xg_make_tool_item): Insert comment about eventbox.

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2011-09-06  Paul Eggert  <eggert@cs.ucla.edu>

	isnan: Fix porting problem to Solaris 10 with bundled gcc.
	Without this fix, the command to link temacs failed due to an
	undefined symbol __builtin_isnan.  This is because
	/usr/include/iso/math_c99.h #defines isnan(x) to
	__builtin_isnan(x), but the bundled gcc, which identifies itself
	as gcc 3.4.3 (csl-sol210-3_4-branch+sol_rpath), does not have
	a __builtin_isnan.
	* floatfns.c (isnan): #undef, and then #define to a clone of
	what's in data.c.
	(Fisnan): Always define, since it's always available now.
	(syms_of_floatfns): Always define isnan at the Lisp level.

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2011-09-06  Paul Eggert  <eggert@cs.ucla.edu>
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	* Makefile.in (gl-stamp): move-if-change now in build-aux (Bug#9169).

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2011-09-06  Paul Eggert  <eggert@cs.ucla.edu>
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	* fileio.c: Fix bugs with large file offsets (Bug#9428).
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	The previous code assumed that file offsets (off_t values) fit in
	EMACS_INT variables, which is not true on typical 32-bit hosts.
	The code messed up by falsely reporting buffer overflow in cases
	such as (insert-file-contents "big" nil 1 2) into an empty buffer
	when "big" contains more than 2**29 bytes, even though this
	inserts just one byte and does not overflow the buffer.
	(Finsert_file_contents): Store file offsets as off_t
	values, not as EMACS_INT values.  Check for overflow when
	converting between EMACS_INT and off_t.  When checking for
	buffer overflow or for overlap, take the offsets into account.
	Don't use EMACS_INT for small values where int suffices.
	When checking for overlap, fix a typo: ZV was used where
	ZV_BYTE was intended.
	(Fwrite_region): Don't assume off_t fits into 'long'.
	* buffer.h (struct buffer.modtime_size): Now off_t, not EMACS_INT.

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2011-09-05  Michael Albinus  <michael.albinus@gmx.de>

	* dbusbind.c (xd_signature_cat): Rename from signature_cat.

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2011-09-04  Paul Eggert  <eggert@cs.ucla.edu>
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	sprintf-related integer and memory overflow issues (Bug#9412).
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	* doprnt.c (doprnt): Support printing ptrdiff_t and intmax_t values.
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	(esprintf, exprintf, evxprintf): New functions.
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	* keyboard.c (command_loop_level): Now EMACS_INT, not int.
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	(cmd_error): Kbd macro iterations count is now EMACS_INT, not int.
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	(modify_event_symbol): Do not assume that the length of
	name_alist_or_stem is safe to alloca and fits in int.
	(Fexecute_extended_command): Likewise for function name and binding.
	(Frecursion_depth): Wrap around reliably on integer overflow.
	* keymap.c (push_key_description): First arg is now EMACS_INT, not int,
	since some callers pass EMACS_INT values.
	(Fsingle_key_description): Don't crash if symbol name contains more
	than MAX_ALLOCA bytes.
	* minibuf.c (minibuf_level): Now EMACS_INT, not int.
	(get_minibuffer): Arg is now EMACS_INT, not int.
	* lisp.h (get_minibuffer, push_key_description): Reflect API changes.
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	(esprintf, exprintf, evxprintf): New decls.
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	* window.h (command_loop_level, minibuf_level): Reflect API changes.

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	* dbusbind.c (signature_cat): New function.
	(xd_signature, Fdbus_register_signal):
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	Do not overrun buffer; instead, report string overflow.

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	* dispnew.c (add_window_display_history): Don't overrun buffer.
	Truncate instead; this is OK since it's just a log.

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	* editfns.c (Fcurrent_time_zone): Don't overrun buffer
	even if the time zone offset is outlandishly large.
	Don't mishandle offset == INT_MIN.

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	* emacs.c (main) [NS_IMPL_COCOA]: Don't overrun buffer
	when creating daemon; the previous buffer-overflow check was incorrect.

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	* eval.c (verror): Simplify by rewriting in terms of evxprintf,
	which has the guts of the old verror function.

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	* filelock.c (lock_file_1, lock_file): Don't blindly alloca long name;
	use SAFE_ALLOCA instead.  Use esprintf to avoid int-overflow issues.

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	* font.c: Include <float.h>, for DBL_MAX_10_EXP.
	(font_unparse_xlfd): Don't blindly alloca long strings.
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	Don't assume XINT result fits in int, or that XFLOAT_DATA * 10
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	fits in int, when using sprintf.  Use single snprintf to count
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	length of string rather than counting it via multiple sprintfs;
	that's simpler and more reliable.
	(font_unparse_fcname): Use it to avoid sprintf buffer overrun.
	(generate_otf_features) [0 && HAVE_LIBOTF]: Use esprintf, not
	sprintf, in case result does not fit in int.

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	* fontset.c (num_auto_fontsets): Now printmax_t, not int.
	(fontset_from_font): Print it.

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	* frame.c (tty_frame_count): Now printmax_t, not int.
	(make_terminal_frame, set_term_frame_name): Print it.
	(x_report_frame_params): In X, window IDs are unsigned long,
	not signed long, so print them as unsigned.
	(validate_x_resource_name): Check for implausibly long names,
	and don't assume name length fits in 'int'.
	(x_get_resource_string): Don't blindly alloca invocation name;
	use SAFE_ALLOCA.  Use esprintf, not sprintf, in case result does
	not fit in int.

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	* gtkutil.c: Include <float.h>, for DBL_MAX_10_EXP.
	(xg_check_special_colors, xg_set_geometry):
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	Make sprintf buffers a bit bigger, to avoid potential buffer overrun.

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	* lread.c (dir_warning): Don't blindly alloca buffer; use SAFE_ALLOCA.
	Use esprintf, not sprintf, in case result does not fit in int.

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	* macros.c (executing_kbd_macro_iterations): Now EMACS_INT, not int.
	(Fend_kbd_macro): Don't mishandle MOST_NEGATIVE_FIXNUM by treating
	it as a large positive number.
	(Fexecute_kbd_macro): Don't assume repeat count fits in int.
	* macros.h (executing_kbd_macro_iterations): Now EMACS_INT, not int.

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	* nsterm.m ((NSSize)windowWillResize): Use esprintf, not sprintf,
	in case result does not fit in int.

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	* print.c (float_to_string): Detect width overflow more reliably.
	(print_object): Make sprintf buffer a bit bigger, to avoid potential
	buffer overrun.  Don't assume list length fits in 'int'.  Treat
	print length of 0 as 0, not as infinity; to be consistent with other
	uses of print length in this function.  Don't overflow print length
	index.  Don't assume hash table size fits in 'long', or that
	vectorlike size fits in 'unsigned long'.

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	* process.c (make_process): Use printmax_t, not int, to format
	process-name gensyms.

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	* sysdep.c (snprintf) [! HAVE_SNPRINTF]: New function.

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	* term.c (produce_glyphless_glyph): Make sprintf buffer a bit bigger
	to avoid potential buffer overrun.

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	* xfaces.c (x_update_menu_appearance): Don't overrun buffer
	if X resource line is longer than 512 bytes.

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	* xfns.c (x_window): Make sprintf buffer a bit bigger
	to avoid potential buffer overrun.

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	* xterm.c (x_io_error_quitter): Don't overrun sprintf buffer.

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	* xterm.h (x_check_errors): Add ATTRIBUTE_FORMAT_PRINTF.

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2011-09-04  Paul Eggert  <eggert@cs.ucla.edu>

891
	Integer overflow fixes for scrolling, etc.
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	Without these, Emacs silently mishandles large integers sometimes.
	For example, "C-u 4294967297 M-x recenter" was treated as if
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	it were "C-u 1 M-x recenter" on a typical 64-bit host.

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	* xdisp.c (try_window_id): Check Emacs fixnum range before
	converting to 'int'.
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	* window.c (window_scroll_line_based, Frecenter):
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	Check that an Emacs fixnum is in range before assigning it to 'int'.
	(Frecenter, Fmove_to_window_line): Use EMACS_INT, not int, for
	values converted from Emacs fixnums.
	(Frecenter): Don't wrap around a line count if it is out of 'int'
	range; instead, treat it as an extreme value.
	(Fset_window_configuration, compare_window_configurations):
	Use ptrdiff_t, not int, for index that might exceed 2 GiB.

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	* search.c (Freplace_match): Use ptrdiff_t, not int, for indexes
	that can exceed INT_MAX.  Check that EMACS_INT value is in range
	before assigning it to the (possibly-narrower) index.
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	(match_limit): Don't assume that a fixnum can fit in 'int'.

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	* print.c (print_object): Use ptrdiff_t, not int, for index that can
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	exceed INT_MAX.

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	* indent.c (position_indentation): Now takes ptrdiff_t, not int.
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	(Fvertical_motion): Don't wrap around LINES values that don't fit
	in 'int'.  Instead, treat them as extreme values.  This is good
	enough for windows, which can't have more than INT_MAX lines anyway.

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2011-09-03  Lars Magne Ingebrigtsen  <larsi@gnus.org>

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	* Require libxml/parser.h to avoid compilation warning.

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	* emacs.c (shut_down_emacs): Call xmlCleanupParser on shutdown.

	* xml.c (parse_region): Don't call xmlCleanupParser after parsing,
	since this reportedly can destroy thread storage.

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2011-08-30  Chong Yidong  <cyd@stupidchicken.com>

	* syntax.c (find_defun_start): Update all cache variables if
	exiting early (Bug#9401).

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2011-08-30  Eli Zaretskii  <eliz@gnu.org>

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	* image.c (x_bitmap_pixmap): Cast to int to avoid compiler warnings.

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	* xdisp.c (produce_stretch_glyph): No longer static, compiled also
	when HAVE_WINDOW_SYSTEM is not defined.  Support both GUI and TTY
	frames.  Call tty_append_glyph in the TTY case.  (Bug#9402)

	* term.c (tty_append_glyph): New function.
	(produce_stretch_glyph): Static function and its prototype deleted.

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	* dispextern.h (produce_stretch_glyph, tty_append_glyph):
	Add prototypes.
948

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2011-08-29  Paul Eggert  <eggert@cs.ucla.edu>

	* image.c (parse_image_spec): Check for nonnegative, not for positive,
	when checking :margin (Bug#9390).
	(IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR):
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	Rename from IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR,
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	so that the name doesn't mislead.  All uses changed.

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2011-08-28  Johan Bockgård  <bojohan@gnu.org>

	* term.c (init_tty) [HAVE_GPM]: Move mouse settings after
	set_tty_hooks.

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2011-08-27  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (move_it_to): Don't bail out early when reaching
	position beyond to_charpos, if we are scanning backwards.
	(move_it_vertically_backward): When DY == 0, make sure we get to
	the first character in the line after the newline.

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2011-08-27  Paul Eggert  <eggert@cs.ucla.edu>

	* ccl.c: Improve and simplify overflow checking (Bug#9196).
	(ccl_driver): Do not generate an out-of-range pointer.
	(Fccl_execute_on_string): Remove unnecessary check for
	integer overflow, noted by Stefan Monnier in
	<http://lists.gnu.org/archive/html/emacs-devel/2011-08/msg00979.html>.
	Remove a FIXME that didn't need fixing.
	Simplify the newly-introduced buffer reallocation code.

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2011-08-27  Juanma Barranquero  <lekktu@gmail.com>

	* makefile.w32-in ($(BLD)/alloc.$(O)): Depend on lib/verify.h.

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2011-08-26  Paul Eggert  <eggert@cs.ucla.edu>
984

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Paul Eggert committed
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	Integer and memory overflow issues (Bug#9196).
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	* doc.c (get_doc_string): Rework so that
	get_doc_string_buffer_size is the actual buffer size, rather than
	being 1 less than the actual buffer size; this makes xpalloc more
	convenient.

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	* image.c (x_allocate_bitmap_record, cache_image):
	* xselect.c (Fx_register_dnd_atom):
	Simplify previous changes by using xpalloc.

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	* buffer.c (overlay_str_len): Now ptrdiff_t, not EMACS_INT,
	since either will do and ptrdiff_t is convenient with xpalloc.

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	* charset.c (charset_table_size)
	(struct charset_sort_data.priority): Now ptrdiff_t.
	(charset_compare): Don't overflow if priorities differ greatly.
	(Fsort_charsets): Don't assume list length fits in int.
	Check for size-calculation overflow when allocating sort data.
	(syms_of_charset): Allocate an initial charset table that is
	just under 64 KiB, to avoid problems with glibc malloc and mmap.

	* cmds.c (internal_self_insert): Check for size-calculation overflow.

	* composite.h (struct composition.glyph_len): Now int, not unsigned.
	The actual value is always <= INT_MAX, and leaving it unsigned made
	overflow checking harder.

	* dispextern.h (struct glyph_matrix.rows_allocated)
	(struct face_cache.size): Now ptrdiff_t, for convenience in use
	with xpalloc.  The values are still always <= INT_MAX.

	* indent.c (compute_motion): Adjust to region_cache_forward sig change.

	* lisp.h (xnmalloc, xnrealloc, xpalloc): New decls.
	(SAFE_NALLOCA): New macro.

	* region-cache.c (struct boundary.pos, find_cache_boundary)
	(move_cache_gap, insert_cache_boundary, delete_cache_boundaries)
	(set_cache_region, invalidate_region_cache)
	(revalidate_region_cache, know_region_cache, region_cache_forward)
	(region_cache_backward, pp_cache):
	Use ptrdiff_t, not EMACS_INT, since either will do.  This is needed
	so that ptrdiff_t * can be passed to xpalloc.
	(struct region_cache): Similarly, for gap_start, gap_len, cache_len,
	beg_unchanged, end_unchanged, buffer_beg, buffer_end members.
	(pp_cache): Don't assume cache_len fits in int.
	* region-cache.h: Adjust extern decls to match.

	* search.c (scan_buffer, Freplace_match): Use ptrdiff_t, not
	EMACS_INT, since either will do, for xpalloc.

	* alloc.c: Include verify.h, and check that int fits in ptrdiff_t.
	(xnmalloc, xnrealloc, xpalloc): New functions.

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	* bidi.c (bidi_shelve_header_size): New constant.
	(bidi_cache_ensure_space, bidi_shelve_cache): Use it.
	(bidi_cache_ensure_space): Avoid integer overflow when allocating.

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	* bidi.c (bidi_cache_shrink):
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	* buffer.c (overlays_at, overlays_in, record_overlay_string)
	(overlay_strings):
	Don't update size of array until after memory allocation succeeds,
	because xmalloc/xrealloc may not return.
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	(struct sortstrlist.bytes): Now ptrdiff_t, as EMACS_INT doesn't help
	now that we have proper integer overflow checking.
	(record_overlay_string, overlay_strings): Catch overflows when
	calculating size of overlay_str_buf.
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	* callproc.c (Fcall_process): Check for size overflow when
	calculating size of args2.
	(child_setup): Avoid overflow by using size_t rather than ptrdiff_t.
	Normally we prefer signed values, but sticking with ptrdiff_t would
	require adding more-complicated checks.
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	* ccl.c (Fccl_execute_on_string): Check for memory overflow.
	Use ptrdiff_t rather than EMACS_INT where ptrdiff_t will do.
	Redo buffer-overflow calculations to avoid integer overflow.
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	Add a FIXME comment where memory seems to be over-allocated.
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	* character.c (Fstring): Check for size-calculation overflow.

	* coding.c (produce_chars): Redo buffer-overflow calculations to avoid
	unnecessary integer overflow.  Check for size overflow.
	(encode_coding_object): Don't update size until xmalloc succeeds.

	* composite.c (get_composition_id): Check for overflow in glyph
	length calculations.

	Integer and memory overflow fixes for display code.
	* dispextern.h (struct glyph_pool.nglyphs): Now ptrdiff_t, not int.
	* dispnew.c (adjust_glyph_matrix, realloc_glyph_pool)
	(scrolling_window): Check for overflow in size calculations.
	(line_draw_cost, realloc_glyph_pool, add_row_entry):
	Don't assume glyph table len fits in int.
	(struct row_entry.bucket, row_entry_pool_size, row_entry_idx)
	(row_table_size): Now ptrdiff_t, not int.
	(scrolling_window): Avoid overflow in size calculations.
	Don't update size until allocation succeeds.
	* fns.c (concat): Check for overflow in size calculations.
	(next_almost_prime): Verify NEXT_ALMOST_PRIME_LIMIT.
	* lisp.h (RANGED_INTEGERP, TYPE_RANGED_INTEGERP): New macros.
	(NEXT_ALMOST_PRIME_LIMIT): New constant.

	* doc.c (get_doc_string_buffer_size): Now ptrdiff_t, not int.
	(get_doc_string): Check for size calculation overflow.
	Don't update size until allocation succeeds.
	(get_doc_string, Fsubstitute_command_keys): Use ptrdiff_t, not
	EMACS_INT, where ptrdiff_t will do.
	(Fsubstitute_command_keys): Check for string overflow.

	* editfns.c (set_time_zone_rule): Don't assume environment length
	fits in int.
	(message_length): Now ptrdiff_t, not int.
	(Fmessage_box): Don't update size until allocation succeeds.
	Don't assume message length fits in int.
	(Fformat): Use ptrdiff_t, not EMACS_INT, where ptrdiff_t will do.

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	* emacs.c (main): Do not reallocate argv, since there is a null at
	the end that can be overwritten, and this way there's no need to
	worry about size-calculation overflow.
	(sort_args): Check for size-calculation overflow.
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	* eval.c (init_eval_once, grow_specpdl): Don't update size until
	alloc succeeds.
	(call_debugger, grow_specpdl): Redo calculations to avoid overflow.

	* frame.c (set_menu_bar_lines, x_set_frame_parameters)
	(x_set_scroll_bar_width, x_figure_window_size):
	Check for integer overflow.
	(x_set_alpha): Do not assume XINT fits in int.

	* frame.h (struct frame): Use int, not EMACS_INT, where int works.
	This is for the members text_lines, text_cols, total_lines, total_cols,
	where the system imposes an 'int' limit.

	* fringe.c (Fdefine_fringe_bitmap):
	Don't update size until alloc works.

	* ftfont.c (ftfont_get_open_type_spec, setup_otf_gstring)
	(ftfont_shape_by_flt): Check for integer overflow in size calculations.

	* gtkutil.c (get_utf8_string, xg_store_widget_in_map):
	Check for size-calculation overflow.
	(get_utf8_string): Use ptrdiff_t, not size_t, where either will
	do, as we prefer signed integers.
	(id_to_widget.max_size, id_to_widget.used)
	(xg_store_widget_in_map, xg_remove_widget_from_map)
	(xg_get_widget_from_map, xg_get_scroll_id_for_window)
	(xg_remove_scroll_bar, xg_update_scrollbar_pos):
	Use and return ptrdiff_t, not int.
	(xg_gtk_scroll_destroy): Don't assume ptrdiff_t fits in int.
	* gtkutil.h: Change prototypes to match the above.

	* image.c (RANGED_INTEGERP, TYPE_RANGED_INTEGERP): Remove; these
	are duplicate now that they've been promoted to lisp.h.
	(x_allocate_bitmap_record, x_alloc_image_color)
	(make_image_cache, cache_image, xpm_load):
	Don't update size until alloc is done.
	(xpm_load, lookup_rgb_color, lookup_pixel_color, x_to_xcolors)
	(x_detect_edges):
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	Check for size calculation overflow.
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	(ct_colors_allocated_max): New constant.
	(x_to_xcolors, x_detect_edges): Reorder multiplicands to avoid
	overflow.
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	* keyboard.c (read_char, menu_bar_items, tool_bar_items)
	(read_char_x_menu_prompt, read_char_minibuf_menu_width)
	(read_char_minibuf_menu_prompt, follow_key, read_key_sequence):
	Use ptrdiff_t, not int, to count maps.
	(read_char_minibuf_menu_prompt): Check for overflow in size
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	calculations.  Don't update size until allocation succeeds.
	Redo calculations to avoid overflow.
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	* keyboard.h: Change prototypes to match the above.

	* keymap.c (cmm_size, current_minor_maps): Use ptrdiff_t, not int,
	to count maps.
	(current_minor_maps): Check for size calculation overflow.
	* keymap.h: Change prototypes to match the above.

	* lread.c (read1, init_obarray): Don't update size until alloc done.

	* macros.c (Fstart_kbd_macro): Don't update size until alloc done.
	(store_kbd_macro_char): Reorder multiplicands to avoid overflow.

	* nsterm.h (struct ns_color_table.size, struct ns_color_table.avail):
	Now ptrdiff_t, not int.
	* nsterm.m (ns_index_color): Use ptrdiff_t, not int, for table indexes.
	(ns_draw_fringe_bitmap): Rewrite to avoid overflow.

	* process.c (Fnetwork_interface_list): Check for overflow
	in size calculation.

	* region-cache.c (move_cache_gap): Check for size calculation overflow.

	* scroll.c (do_line_insertion_deletion_costs): Check for size calc
	overflow.  Don't bother calling xmalloc when xrealloc will do.

	* search.c (Freplace_match): Check for size calculation overflow.
	(Fset_match_data): Don't assume list lengths fit in 'int'.

	* sysdep.c (system_process_attributes): Use ptrdiff_t, not int,
	for command line length.  Do not attempt to address one before the
	beginning of an array, as that's not portable.

	* term.c (max_frame_lines): Remove; unused.
	(encode_terminal_src_size, encode_terminal_dst_size): Now ptrdiff_t,
	not int.
	(encode_terminal_code, calculate_costs): Check for size
	calculation overflow.
	(encode_terminal_code): Use ptrdiff_t, not int, to record glyph
	table lengths and related sizes.  Don't update size until alloc
	done.  Redo calculations to avoid overflow.
	(calculate_costs): Don't bother calling xmalloc when xrealloc will do.

	* termcap.c (tgetent): Use ptrdiff_t, not int, to record results of
	subtracting pointers.
	(gobble_line): Check for overflow more carefully.  Don't update size
	until alloc done.

	* tparam.c (tparam1): Use ptrdiff_t, not int, for sizes.
	Don't update size until alloc done.
	Redo size calculations to avoid overflow.
	Check for size calculation overflow.
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	(main) [DEBUG]: Fix typo in invoking tparam1.
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	* xdisp.c (store_mode_line_noprop_char, x_consider_frame_title):
	Use ptrdiff_t, not int, for sizes.
	(store_mode_line_noprop_char): Don't update size until alloc done.

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	* xfaces.c (lface_id_to_name_size, Finternal_make_lisp_face):
	Use ptrdiff_t, not int, for sizes.
	(Finternal_make_lisp_face, cache_face):
	Check for size calculation overflow.
	(cache_face): Treat size calculation overflows as if they were
	memory exhaustion (the usual treatment), rather than aborting.
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	* xfns.c (x_encode_text, x_set_name_internal)
	(Fx_change_window_property): Use ptrdiff_t, not int, to count
	sizes, since they can exceed INT_MAX in size.  Check for size
	calculation overflow.

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	* xgselect.c (gfds_size): Now ptrdiff_t, for convenience with xpalloc.
	(xg_select): Check for size calculation overflow.
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	Don't update size until alloc done.

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	* xrdb.c (get_environ_db): Don't assume path length fits in int,
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	as sprintf is limited to int lengths.
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	* xselect.c (X_LONG_SIZE, X_SHRT_MAX, X_SHRT_MIN, X_LONG_MAX)
	(X_LONG_MIN): New macros.
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	Use them to make the following changes clearer.
	(MAX_SELECTION_QUANTUM): Make the other bounds on this value clearer.
	This change doesn't affect the value now, but it may help remind
	future maintainers not to raise the value too much later.
	(SELECTION_QUANTUM): Remove, replacing with ...
	(selection_quantum): ... new function, which avoids overflow.
	All uses changed.
	(struct selection_data.size): Now ptrdiff_t, not int, to avoid
	assumption that selection length fits in 'int'.
	(x_reply_selection_request, x_handle_selection_request)
	(x_get_window_property, receive_incremental_selection)
	(x_get_window_property_as_lisp_data, selection_data_to_lisp_data)
	(lisp_data_to_selection_data, clean_local_selection_data):
	Use ptrdiff_t, not int, to record length of selection.
	(x_reply_selection_request, x_get_window_property)
	(receive_incremental_selection, x_property_data_to_lisp):
	Redo calculations to avoid overflow.
	(x_reply_selection_request): When sending hint, ceiling it at
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	X_LONG_MAX rather than relying on wraparound overflow to send
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	something.
	(x_get_window_property, receive_incremental_selection)
	(lisp_data_to_selection_data, x_property_data_to_lisp):
	Check for size-calculation overflow.
	(x_get_window_property, receive_incremental_selection)
	(lisp_data_to_selection_data, Fx_register_dnd_atom):
	Don't store size until memory allocation succeeds.
	(x_get_window_property): Plug memory leak on memory exhaustion.
	Don't double-block input; malloc is safe here.  Don't assume 2**34
	- 4 fits in unsigned long.  Add an xassert to check
	XGetWindowProperty overflow.  Be more careful about overflow
	calculations, and distinguish size from memory overflow better.
	(receive_incremental_selection): When tracing, don't assume
	unsigned int is less than INT_MAX.
	(x_selection_data_to_lisp_data): Remove unnecessary (and in theory
	harmful) conversions of unsigned short to int.
	(lisp_data_to_selection_data): Don't assume that integers
	in the range -65535 through -1 fit in an X unsigned short.
	Don't assume that ULONG_MAX == X_ULONG_MAX.  Don't store into
	result parameters unless successful.  Rely on cons_to_unsigned
	to report problems with elements; the old code wasn't right anyway.
	(x_check_property_data): Check for int overflow; we cannot use
	a wider type due to X limits.
	(x_handle_dnd_message): Use unsigned int, to avoid int overflow.

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	* xsmfns.c (smc_save_yourself_CB): Check for size calc overflow.
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	* xterm.c (x_color_cells, x_send_scrollbar_event, handle_one_xevent)
	(x_term_init): Check for size calculation overflow.
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	(x_color_cells): Don't store size until memory allocation succeeds.
	(handle_one_xevent): Use ptrdiff_t, not int, for byte counts.
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	Don't assume alloca size is less than MAX_ALLOCA.
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	(x_term_init): Don't assume length fits in int (sprintf is limited
	to int size).
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	Use ptrdiff_t for composition IDs.
	* character.c (lisp_string_width):
	* composite.c (composition_table_size, n_compositions)
	(get_composition_id, composition_gstring_from_id):
	* dispextern.h (struct glyph_string.cmp_id, struct composition_it.id):
	* xdisp.c (BUILD_COMPOSITE_GLYPH_STRING):
	* window.c (Frecenter):
	Use ptrdiff_t, not int, for composition IDs.
	* composite.c (get_composition_id): Check for integer overflow.
	* composite.h: Adjust prototypes to match the above changes.

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	Use ptrdiff_t for hash table indexes.
	* category.c (hash_get_category_set):
	* ccl.c (ccl_driver):
	* charset.h (struct charset.hash_index, CHECK_CHARSET_GET_ID):
	* coding.c (coding_system_charset_list, detect_coding_system):
	* coding.h (struct coding_system.id):
	* composite.c (get_composition_id, gstring_lookup_cache):
	* fns.c (hash_lookup, hash_put, Fgethash, Fputhash):
	* image.c (xpm_get_color_table_h):
	* lisp.h (hash_lookup, hash_put):
	* minibuf.c (Ftest_completion):
	Use ptrdiff_t for hash table indexes, not int (which is too
	narrow, on 64-bit hosts) or EMACS_INT (which is too wide, on
	32-bit --with-wide-int hosts).

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	* charset.c (Fdefine_charset_internal): Check for integer overflow.
	Add a FIXME comment about memory leaks.
	(syms_of_charset): Don't assume xmalloc returns.

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	Don't assume that stated character widths fit in int.
	* character.c (Fchar_width, c_string_width, lisp_string_width):
	* character.h (CHAR_WIDTH):
	* indent.c (MULTIBYTE_BYTES_WIDTH):
	Use sanitize_char_width to avoid undefined and/or bad behavior
	with outlandish widths.
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	* character.h (sanitize_tab_width): Rename from sanitize_width,
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	now that we have two such functions.  All uses changed.
	(sanitize_char_width): New inline function.

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	Don't assume that tab-width fits in int.
	* character.h (sanitize_width): New inline function.
	(SANE_TAB_WIDTH): New macro.
	(ASCII_CHAR_WIDTH): Use it.
	* indent.c (sane_tab_width): Remove.  All uses replaced by
	SANE_TAB_WIDTH (current_buffer).
	* xdisp.c (init_iterator): Use SANE_TAB_WIDTH.

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	* fileio.c: Integer overflow issues with file modes.
	(Fset_file_modes, auto_save_1): Don't assume EMACS_INT fits in int.

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	* charset.c (read_hex): New arg OVERFLOW.  All uses changed.
	Remove unreachable code.
	(read_hex, load_charset_map_from_file): Check for integer overflow.

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	* xterm.c: don't go over XClientMessageEvent limit
	(scroll_bar_windows_size): Now ptrdiff_t, as we prefer signed.
	(x_send_scroll_bar_event): Likewise.  Check that the size does not
	exceed limits imposed by XClientMessageEvent, as well as the usual
	ptrdiff_t and size_t limits.

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	* keyboard.c: Overflow, signedness and related fixes.
	(make_lispy_movement): Use same integer type in forward decl
	that is used in the definition.
	(read_key_sequence, keyremap_step):
	Change bufsize argument back to int, undoing my 2011-03-30 change.
	We prefer signed types, and int is wide enough here.
	(parse_tool_bar_item): Don't assume tool_bar_max_label_size is less
	than TYPE_MAXIMUM (EMACS_INT) / 2.  Don't let the label size grow
	larger than STRING_BYTES_BOUND.  Use ptrdiff_t for Emacs string
	length, not size_t.  Use ptrdiff_t for index, not int.
	(keyremap_step, read_key_sequence): Redo bufsize check to avoid
	possibility of integer overflow.

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	Overflow, signedness and related fixes for images.

	* dispextern.h (struct it.stack[0].u.image.image_id)
	(struct_it.image_id, struct image.id, struct image_cache.size)
	(struct image_cache.used, struct image_cache.ref_count):
	* gtkutil.c (update_frame_tool_bar):
	* image.c (x_reference_bitmap, Fimage_size, Fimage_mask_p)
	(Fimage_metadata, free_image_cache, clear_image_cache, lookup_image)
	(cache_image, mark_image_cache, x_kill_gs_process, Flookup_image):
	* nsmenu.m (update_frame_tool_bar):
	* xdisp.c (calc_pixel_width_or_height):
	* xfns.c (image_cache_refcount):
	Image IDs are now ptrdiff_t, not int, to avoid arbitrary limits
	on typical 64-bit hosts.

	* image.c (RANGED_INTEGERP, TYPE_RANGED_INTEGERP): New macros.
	(x_bitmap_pixmap, x_create_x_image_and_pixmap):
	Omit unnecessary casts to int.
	(parse_image_spec): Check that integers fall into 'int' range
	when the callers expect that.
	(image_ascent): Redo ascent calculation to avoid int overflow.
	(clear_image_cache): Avoid overflow when sqrt (INT_MAX) < nimages.
	(lookup_image): Remove unnecessary tests.
	(xbm_image_p): Locals are now of int, not EMACS_INT,
	since parse_image_check makes sure they fit into int.
	(png_load, gif_load, svg_load_image):
	Prefer int to unsigned where either will do.
	(tiff_handler): New function, combining the cores of the
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	old tiff_error_handler and tiff_warning_handler.
	This function is rewritten to use vsnprintf and thereby avoid
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	stack buffer overflows.  It uses only the features of vsnprintf
	that are common to both POSIX and native Microsoft.
	(tiff_error_handler, tiff_warning_handler): Use it.
	(tiff_load, gif_load, imagemagick_load_image):
	Don't assume :index value fits in 'int'.
	(gif_load): Omit unnecessary cast to double, and avoid double-rounding.
	(imagemagick_load_image): Check that crop parameters fit into
	the integer types that MagickCropImage accepts.  Don't assume
	Vimagemagick_render_type has a nonnegative value.  Don't assume
	size_t fits in 'long'.
	(gs_load): Use printmax_t to print the widest integers possible.
	Check for integer overflow when computing image height and width.

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2011-08-26  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (redisplay_window): Don't force window start if point
	will be invisible in the resulting window.  (Bug#9324)

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2011-08-25  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (compute_display_string_pos): Return 2 in DISP_PROP when
	the display spec is of the form `(space ...)'.
	(handle_display_spec): Return the value returned by
	handle_single_display_spec, not just 1 or zero.
	(handle_single_display_spec): If the display spec is of the form
	`(space ...)', and specifies display in the text area, return 2
	rather than 1.
Eli Zaretskii's avatar