[vim/vim] runtime(screen): Bring the syntax up to version 5 (PR #20550)

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Aliaksei Budavei

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Jun 17, 2026, 6:23:55 PM (8 hours ago) Jun 17

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Match command names introduced in v.5.0.0 (August 2024):
auth, multiinput, status, truecolor.
Match command names introduced in v.4.5.0 (January 2017):
defdynamictitle and dynamictitle.
Deprecate command names that have been retired thus far:
debug, maxwin, nethack, password, time.
Remove a spurious defzombie command name (this name is
just lamented over in the documentation entry for the
zombie command as being more fitting than zombie
because its effects are not local to a window; no such
name is entered in comm.c).
Separately group the Braille navigation commands, bd_*,
that may belong to another, superset program Dotscreen:
(see doc/README.DOTSCREEN and commit 848af83f5 elsewhere).
Revise string escape characters:
- Recognise more characters, %[`<>=eEfFHOPSxX].
- Recognise undocumented characters, %[gNpT], and list
  relevant Screen commits in the comments.
- Match optional qualifiers, %\%([-+L]\|\d\+\)..
Match more items in double-quoted command arguments.
Match unquoted environment variable references.
Match octal and hexadecimal (version 5) numbers.
Match whole escaped numbers, e.g. bind \077 help.

Unless a Dotscreen program (c. 1995) or an older than
v.4.3.1 (c. 2015) Screen program, that was compiled with
HAVE_BRAILLE defined, is installed and needs configuring,
add to .vim/after/syntax/screen.vim:

if hlexists('dotscreenCommands')
    syn clear dotscreenCommands
endif

To BACKPORT the updated syntax file to version 4 of Screen,
add to .vim/after/syntax/screen.vim:

if hlexists('screenDeprecatedCommands')
    syn clear screenDeprecatedCommands
endif

if hlexists('screenVersion5Commands')
    syn clear screenVersion5Commands
endif

if hlexists('screenHexadecimalNumber')
    syn clear screenHexadecimalNumber
endif

References:
https://lists.gnu.org/archive/html/info-gnu/2024-08/msg00004.html
https://lists.gnu.org/archive/html/info-gnu/2017-01/msg00007.html
https://git.savannah.gnu.org/git/screen.git

You can view, comment on, or merge this pull request online at:

https://github.com/vim/vim/pull/20550

Commit Summary

4560ec8 runtime(screen): Bring the syntax up to version 5

File Changes

(5 files)

M runtime/syntax/screen.vim (96)
A runtime/syntax/testdir/dumps/screen_00.dump (20)
A runtime/syntax/testdir/dumps/screen_01.dump (20)
A runtime/syntax/testdir/dumps/screen_02.dump (20)
A runtime/syntax/testdir/input/screen.screenrc (32)

Patch Links:

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Aliaksei Budavei

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Jun 17, 2026, 6:25:36 PM (8 hours ago) Jun 17

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