Manpager: apply g flag conditionally to s command (#12679)

[Christian Brabandt]

Manpager: apply g flag conditionally to s command (#12679)

Commit: https://github.com/vim/vim/commit/64dea84bb05a29117cf2708085021c535b898975
Author: Filip Gospodinov <f...@gospodinov.ch>
Date: Wed Aug 9 18:00:36 2023 +0200

Manpager: apply g flag conditionally to s command (https://github.com/vim/vim/issues/12679)

Problem: The `s` command with `g` flag only substitutes
one occurrence when `gdefault` is set.
Solution: Use `g` flag conditionally.

diff --git a/runtime/plugin/manpager.vim b/runtime/plugin/manpager.vim
index 1738dc943..076aca5f8 100644
--- a/runtime/plugin/manpager.vim
+++ b/runtime/plugin/manpager.vim
@@ -30,10 +30,10 @@ function s:ManPager()
setlocal modifiable

" Emulate 'col -b'
- silent! keepj keepp %s/\v(.)\b\ze\1?//ge
+ exe 'silent! keepj keepp %s/\v(.)\b\ze\1?//e' .. (&gdefault ? '' : 'g')

" Remove ansi sequences
- silent! keepj keepp %s/\v\e\[%(%(\d;)?\d{1,2})?[mK]//ge
+ exe 'silent! keepj keepp %s/\v\e\[%(%(\d;)?\d{1,2})?[mK]//e' .. (&gdefault ? '' : 'g')

" Remove empty lines above the header
call cursor(1, 1)