(Fx_file_dialog): Pass a filter to GetOpenFileName.
Sync with xfns.c: (x_laplace_read_row, x_laplace_write_row): Removed. (postprocess_image): New function. (lookup_image): Call it for all image types except PostScript. (x_kill_gs_process): Call postprocess_image. (tiff_error_handler, tiff_warning_handler): New functions. (tiff_load): Install them as handlers. (x_kill_gs_process): Recognize if someone has cleared the image cache under us. (valid_image_p): Protect better against invalid image specifications. Previous code could signal an error. (Fx_hide_tip, Fshow_tip): Doc fix. (Fv_max_tooltip_size): New variable. (syns_of_xfns): DEFVAR_LISP it. (Fx_show_tip): Add parameter TEXT. Set the tip frame's root window buffer to *tip* right after creating the frame. Set frame's window_width. Use a maximum tooltip size specified by Vx_max_tooltip_size, if that has valid contents. (compute_tip_xy): Add parameters WIDTH and HEIGHT. Make sure the tooltip is completely visible. (x_create_tip_frame): Set tooltip buffer's truncate-lines to nil. (Fx_create_frame): Adjust the frame's height for presence of the tool bar before calling x_figure_window_size. (x_set_tool_bar_lines): Clear the tool bar window's current matrix when the window gets smaller. (x_set_foreground_color): Set frame's cursor_pixel. (x_set_foreground_color, x_set_background_color): Cleaned up. (x_set_font): Handle case of x_new_fontset returning the same name as before, although there was a change in fontsets.
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