Commit: runtime(doc): Correct allowed characters at :help 'filetype'

[Christian Brabandt]

runtime(doc): Correct allowed characters at :help 'filetype'

Commit: https://github.com/vim/vim/commit/a6172f8c5ce136d877965bf49881fc6e71ea4edf
Author: Doug Kearns <dougk...@gmail.com>
Date: Mon May 26 20:32:35 2025 +0200

runtime(doc): Correct allowed characters at :help 'filetype'

closes: https://github.com/vim/vim/issues/17366

Signed-off-by: Doug Kearns <dougk...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index b1f3e1506..38eb31d33 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -3633,7 +3633,8 @@ A jump table for the options with a short description can be found at |Q_op|.
one dot may appear.
This option is not copied to another buffer, independent of the 's' or
'S' flag in 'cpoptions'.
- Only alphanumeric characters, '-' and '_' can be used.
+ Only alphanumeric characters, '-' and '_' can be used (and a '.' is
+ allowed as delimiter when combining different filetypes).

*'fillchars'* *'fcs'*
'fillchars' 'fcs' string (default "vert:|,fold:-,eob:~,lastline:@")