Commit: runtime(netrw): Do not create swapfiles in netrw buffers

[Christian Brabandt]

runtime(netrw): Do not create swapfiles in netrw buffers

Commit: https://github.com/vim/vim/commit/4e2aafddbb6658a984bb6042026eb4ba5ee423d7
Author: Christian Brabandt <c...@256bit.org>
Date: Mon Jan 19 19:25:12 2026 +0000

runtime(netrw): Do not create swapfiles in netrw buffers

Problem: When using netrw to navigate directories, vim immediately
creates, then deletes a swap file in the entered directory,
causing the lastModifiedTime of that directory to change.
Solution: Use the :noswapfile command modifier in s:NetrwEditFile()

fixes: #18854

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

diff --git a/runtime/pack/dist/opt/netrw/autoload/netrw.vim b/runtime/pack/dist/opt/netrw/autoload/netrw.vim
index 0d73de9ac..7ec29a2c3 100644
--- a/runtime/pack/dist/opt/netrw/autoload/netrw.vim
+++ b/runtime/pack/dist/opt/netrw/autoload/netrw.vim
@@ -17,6 +17,7 @@
" 2025 Nov 18 by Vim Project use UNC paths when using scp and Windows paths #18764
" 2025 Nov 28 by Vim Project fix undefined variable in *NetrwMenu #18829
" 2025 Dec 26 by Vim Project fix use of g:netrw_cygwin #19015
+" 2026 Jan 19 by Vim Project do not create swapfiles #18854
" Copyright: Copyright (C) 2016 Charles E. Campbell {{{1
" Permission is hereby granted to use and distribute this code,
" with or without modifications, provided that this copyright
@@ -4257,12 +4258,12 @@ endfunction
" NetrwKeepj [keepalt] <OPT> <CMD> <FILENAME>
function s:NetrwEditFile(cmd,opt,fname)
if exists("g:netrw_altfile") && g:netrw_altfile && &ft == "netrw"
- exe "NetrwKeepj keepalt ".a:opt." ".a:cmd." ".fnameescape(a:fname)
+ exe "NetrwKeepj noswapfile keepalt ".a:opt." ".a:cmd." ".fnameescape(a:fname)
else
if a:cmd =~# 'e\%[new]!' && !&hidden && getbufvar(bufname('%'), '&modified', 0)
call setbufvar(bufname('%'), '&bufhidden', 'hide')
endif
- exe "NetrwKeepj ".a:opt." ".a:cmd." ".fnameescape(a:fname)
+ exe "NetrwKeepj noswapfile ".a:opt." ".a:cmd." ".fnameescape(a:fname)
endif
endfunction