runtime(netrw): filetype not detected when editing remote files

Commit: 
https://github.com/vim/vim/commit/08d2401fbc6de2606aca69add401e2ffca772aa2
Author: Christian Brabandt <c...@256bit.org>
Date:   Wed Apr 3 22:44:27 2024 +0200

    runtime(netrw): filetype not detected when editing remote files
    
    fixes: https://github.com/vim/vim/issues/14400
    
    Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/autoload/netrw.vim b/runtime/autoload/netrw.vim
index b91dab4e7..e2152b0df 100644
--- a/runtime/autoload/netrw.vim
+++ b/runtime/autoload/netrw.vim
@@ -8,6 +8,7 @@
 "      2023 Nov 22 by Vim Project: fix handling of very long filename on 
longlist style        (v173a)
 "   2024 Feb 19 by Vim Project: (announce adoption)
 "   2024 Feb 29 by Vim Project: handle symlinks in tree mode correctly
+"   2024 Apr 03 by Vim Project: detect filetypes for remote edited files
 " Former Maintainer:   Charles E Campbell
 " GetLatestVimScripts: 1075 1 :AutoInstall: netrw.vim
 " Copyright:    Copyright (C) 2016 Charles E. Campbell {{{1
@@ -1803,7 +1804,9 @@ fun! s:NetrwOptionsRestore(vt)
 "  call Decho("settings buf#".bufnr("%")."<".bufname("%").">: ".((&l:ma == 0)? 
"no" : "")."ma ".((&l:mod == 0)? "no" : "")."mod ".((&l:bl == 0)? "no" : 
"")."bl ".((&l:ro == 0)? "no" : "")."ro fo=".&l:fo." 
a:vt=".a:vt,'~'.expand("<slnum>"))
   if !exists("{a:vt}netrw_optionsave")
 "   call Decho("case ".a:vt."netrw_optionsave : doesn't 
exist",'~'.expand("<slnum>"))
-   if filereadable(expand("%"))
+
+   " filereadable() returns zero for remote files (e.g. 
scp://localhost//etc/fstab)
+   if filereadable(expand("%")) || expand("%") =~# '^\w\+://\+/'
 "    call Decho("..doing filetype detect anyway")
     filetype detect
 "    call Decho("..settings buf#".bufnr("%")."<".bufname("%").">: ".((&l:ma == 
0)? "no" : "")."ma ".((&l:mod == 0)? "no" : "")."mod ".((&l:bl == 0)? "no" : 
"")."bl ".((&l:ro == 0)? "no" : "")."ro fo=".&l:fo." 
a:vt=".a:vt,'~'.expand("<slnum>"))

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