src/xdisp.c (move_it_in_display_line_to): Save the iterator state in ppos_it
only once per call. Reimplement the method used to return to the
best candidate position if all the positions found in display line
are beyond TO_CHARPOS. This cuts down the number of calls to
bidi_shelve_cache, which moves a lot of stuff when lines are long
and include bidirectional text.
src/xdisp.c (try_cursor_movement): Don't use cursor position if
set_cursor_from_row failed to compute it. This avoids assertion
violations in MATRIX_ROW.
src/xdisp.c (display_line): Fix horizontal scrolling of large images
when fringes are turned off. This comes at a price of not
displaying the truncation/continuation glyphs in this case.
src/image.c (x_create_x_image_and_pixmap) [HAVE_NTGUI]: If
CreateDIBSection returns an error indication, zero out *ximg after
destroying the image. This avoids crashes in memory allocations
due to the fact that some of the callers also call
x_destroy_x_image, which will attempt to free an already free'd
block of memory.
src/w32proc.c (start_timer_thread): Pass a non-NULL pointer as last
argument to CreateThread. This avoids segfaults on Windows 9X.
Reported by oslsachem <oslsachem@gmail.com>.
* unexhp9k800.c (unexec_error): New function, to simplify the code.
(check_lseek): New function, to report lseek errors.
(save_data_space, update_file_ptrs, read_header, write_header)
(copy_file, copy_rest, unexec): Use these news functions.
(update_file_ptrs): Don't assume wraparound behavior when
converting a large size_t value to off_t.
Fixes: debbugs:16717
and move parameters checking to...
* composite.c (Fcomposition_get_gstring): ...this function. Handle
case when buffer positions are in reversed order and avoid crash
(Bug#16739). Adjust docstring.
* buffer.c (validate_region): Mention current buffer in error message.
* xdisp.c (window_box_width): Don't return less than zero.
(window_box_left_offset, window_box_right_offset): Don't return
more than the window's pixel width.
src/w32.c (pMultiByteToWideChar, pWideCharToMultiByte): New
variables: pointers through which to call the respective APIs.
(filename_to_utf16, filename_from_utf16, filename_to_ansi)
(filename_from_ansi, sys_link, check_windows_init_file): Call
MultiByteToWideChar and WideCharToMultiByte through pointers.
This is required on Windows 9X, where we dynamically load
UNICOWS.DLL which has their non-stub implementations.
(maybe_load_unicows_dll): Assign addresses to these 2 function
pointers after loading UNICOWS.DLL.
src/w32fns.c (Fx_file_dialog, Fw32_shell_execute) [!CYGWIN]: Call
MultiByteToWideChar and WideCharToMultiByte through function
pointers.
src/w32.h (pMultiByteToWideChar, pWideCharToMultiByte): New
declarations.
