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

fixes: #14400

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

diff --git a/runtime/autoload/netrw.vim b/runtime/autoload/netrw.vim
index b91dab4e715c49dbb48bdb5486fd24ab640a7547..e2152b0dfc2dc978902291fb30acfcbb38b9ce2b 100644 (file)
--- 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\+://\f\+/'
 "    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>"))