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| author | Eshel Yaron | 2023-06-04 19:41:20 +0300 |
|---|---|---|
| committer | Eli Zaretskii | 2023-06-06 15:08:31 +0300 |
| commit | 4f66cbbfe520ee31ef26676e09a926217d9736fe (patch) | |
| tree | 2aad8a7af90b4bdcfe8bb988eb688d2ffc7b6be1 /java/debug.sh | |
| parent | d751915ef4c10f2dc10555c404fac3c981320b4f (diff) | |
| download | emacs-4f66cbbfe520ee31ef26676e09a926217d9736fe.tar.gz emacs-4f66cbbfe520ee31ef26676e09a926217d9736fe.zip | |
Avoid header line with some empty non-nil formats
Allow the value of 'header-line-format' to indicate that no header
line should be displayed when it trivially yields 'nil', even if it is
not plain 'nil'. Previously, any non-nil 'header-line-format'
resulted in a (possibly empty) header line. This change adds some
flexibility by also taking a non-nil value of 'header-line-format' to
mean that no header line should be displayed if it's a list whose
'car' is a symbol and either that symbol is ':eval' and the second
list element evaluates to 'nil', or the symbol's value as a variable
is 'nil' or void.
(Bug#63825)
* src/xdisp.c (safe_eval_inhibit_quit): New function.
* src/lisp.h (safe_eval_inhibit_quit): Declare it.
* src/window.c (null_header_line_format): New function.
(window_wants_header_line): Use it.
* doc/lispref/modes.texi (Header Line): Update to reflect new
conditions for displaying a window's header line.
* etc/NEWS: Announce updated treatment of 'header-line-format'.
Diffstat (limited to 'java/debug.sh')
0 files changed, 0 insertions, 0 deletions