Commit: runtime(doc): mention improved rendering with 'termguicolors'

[Christian Brabandt]

runtime(doc): mention improved rendering with 'termguicolors'

Commit: https://github.com/vim/vim/commit/a7680a1a69ef5986033b37d0e57f6242c007bcb2
Author: Christian Brabandt <c...@256bit.org>
Date: Wed Sep 24 17:43:15 2025 +0000

runtime(doc): mention improved rendering with 'termguicolors'

related: https://github.com/vim/vim/issues/9715

Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 445e925c3..05da80126 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -8919,14 +8919,16 @@ A jump table for the options with a short description can be found at |Q_op|.
When on, uses |highlight-guifg| and |highlight-guibg| attributes in
the terminal (thus using 24-bit color).

- Requires a ISO-8613-3 compatible terminal. If setting this option
+ Requires an ISO-8613-3 compatible terminal. If setting this option
does not work (produces a colorless UI) reading |xterm-true-color|
might help.

For Win32 console, Windows 10 version 1703 (Creators Update) or later
is required. Use this check to find out: >
if has('vcon')
-< This requires Vim to be built with the |+vtp| feature.
+< This requires Vim to be built with the |+vtp| feature. Enabling
+ 'termguicolors' also enable Virtual Terminal Processing (VTP) in the
+ Windows console, which improves rendering of multi-byte characters.

Note that the "cterm" attributes are still used, not the "gui" ones.