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Changes to xfns.c to support reading images from a memory buffer instead of forcing them to be on disk.  GIF/JPEG/PNG/TIFF currently support this.

because it doesn't hold when there's an overlay string at the end
from which we deliver an image.

(jpeg_format): Add :data.
(jpeg_image_p): Handle :data.
(our_fill_input_buffer, our_skip_input_data, our_term_source)
(jpeg_memory_src): New functions.
(jpeg_load): Read image from string data.

do not delete the prompt string.

assigned to mode-line-mode-menu because bindings.el is dumped with
Emacs, and thus the lists used for menu-item definition will be
copied to pure space.  Emacs' menu code (parse_menu_item) doesn't
like pure menu item definitions.

window for deleted windows.

a hook, and the hook has a non-nil `no-self-insert' property, let
the return value of the hook specify whether an expansion took
place.  If it returns nil, no expansion has been performed.

done, nil otherwise.

differently.

(tar-quit): Function deleted.

(hs-discard-overlays, hs-isearch-show, hs-isearch-show-temporary,
hs-find-block-beginning): Add or modify docstrings.

(hs-isearch-show): Rewrite.

to signal_after_change.

space in front of a C-style comment end.

the MS-DOS version as well.

(dos_set_window_size) [__DJGPP__ > 1]: If the frame
dimensions changed, invalidate the mouse highlight info.
(disable_mouse_highlight, help_echo, previous_help_echo): New
variables.
(IT_set_mouse_pointer, show_mouse_face, clear_mouse_face)
(fast_find_position, IT_note_mode_line_highlight)
(IT_note_mouse_highlight): New functions.
(IT_update_begin): If the redisplay affects the window where the
mouse highlight is, clear the highlight.  If the frame where the
highlight was displayed was killed, invalidate the highlight
info.
(IT_update_end): Reset the highlight flag.  Reset the mouse
highlight-defer flag.
(IT_frame_up_to_date): New function, if mouse highlight was
deferred due to GC, do it now.
(internal_terminal_init): Initialize mouse-highlight related
members of the_only_x_display.  Assign IT_frame_up_to_date to
frame_up_to_date_hook.
(dos_rawgetc): If the mouse moved, update mouse highlight.  If
help_echo changed value, generate a HELP_EVENT event.
(syms_of_msdos): Staticpro help_echo and previous_help_echo.

(struct x_output): Add the display_info member.
(FRAME_X_DISPLAY_INFO): New macro.

if MODIFF > 1.

in positions within the line, due to previous replacements.