The new 'borders-respect-alpha-background' frame parameter, when
set to 't', will make window dividers and internal borders
respect the 'alpha-background' frame parameter. This allows
transparent gaps between windows.
* doc/lispref/frames.texi (Font and Color Parameters):
Document the change.
* src/frame.c (frame_parm_table, syms_of_frame)
(gui_set_borders_respect_alpha_background):
* src/frame.h (struct frame): Add frame parameter.
* src/androidfns.c (x_create_frame, android_create_tip_frame)
(android_frame_parm_handlers):
* src/haikufns.c (haiku_create_frame, haiku_create_tip_frame)
(haiku_frame_parm_handlers):
* src/nsfns.m (ns_frame_parm_handlers, x_create_frame):
* src/w32fns.c (x_create_frame, w32_create_tip_frame)
(w32_frame_parm_handlers): Add dummy parameters for backends
that don't support opacity.
* src/pgtkfns.c (pgtk_frame_parm_handlers, x_create_frame)
(pgtk_create_tip_frame):
* src/pgtkterm.c (pgtk_draw_window_divider):
* src/xfns.c (x_create_frame, x_create_tip_frame)
(x_frame_parm_handlers)
* src/xterm.c (x_draw_window_divider)
(x_clear_under_internal_border): Implement parameter on backends
that support opacity.
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Copyright (C) 2001-2025 Free Software Foundation, Inc. -*- outline -*-
See the end of the file for license conditions.
README for the Emacs Lisp Reference Manual.
* This directory contains the texinfo source files for the Emacs Lisp
Reference Manual.
* Report bugs in the Lisp Manual (or in Emacs) using M-x report-emacs-bug.
To ask questions, use the help-gnu-emacs mailing list.
* The Emacs Lisp Reference Manual is quite large. It totals around
1100 pages in smallbook format; the info files total around 3.0 megabytes.
* You can format this manual for Info, for printing hardcopy using TeX,
or for HTML.
* You can buy nicely printed copies from the Free Software Foundation.
Buying a manual from the Free Software Foundation helps support our GNU
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(At time of writing, this manual is out of print.)
* The master file for formatting this manual for Tex is called 'elisp.texi'.
It contains @include commands to include all the chapters that make up
the manual.
* This distribution contains a Makefile that you can use with GNU Make.
** To make an Info file, you need to install Texinfo, then run 'make info'.
** Use 'make elisp.pdf' or 'make elisp.html' to create PDF or HTML versions.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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