runtime: rplugin manifest written to $XDG_DATA_HOME

Uses $NVIM_RPLUGIN_MANIFEST if available

1 files changed, 51 insertions, 4 deletions

diff --git a/runtime/autoload/remote/host.vim b/runtime/autoload/remote/host.vim
index eb5e87d7e1..104a27f357 100644
--- a/runtime/autoload/remote/host.vim
+++ b/runtime/autoload/remote/host.vim
@@ -118,7 +118,38 @@ function! remote#host#RegisterPlugin(host, path, specs) abort
 endfunction
 
 
-function! s:GetManifest() abort
+" Get the path to the rplugin manifest file.
+function! s:GetManifestPath() abort
+  let manifest_base = ''
+
+  if exists('$NVIM_RPLUGIN_MANIFEST')
+    return fnamemodify($NVIM_RPLUGIN_MANIFEST, ':p')
+  endif
+
+  let preferred = has('win32')
+        \ ? ['$LOCALAPPDATA', '~/AppData/Local']
+        \ : ['$XDG_DATA_HOME', '~/.local/share']
+
+  for dest in preferred
+    if dest[0] == '$' && !exists(dest)
+      continue
+    endif
+
+    let dest = fnamemodify(expand(dest), ':p')
+    if !empty(dest) && isdirectory(dest)
+      let dest .= 'nvim/'
+      call mkdir(dest, 'p', 700)
+      let manifest_base = dest
+      break
+    endif
+  endfor
+
+  return manifest_base.'rplugin.vim'
+endfunction
+
+
+" Old manifest file based on known script locations.
+function! s:GetOldManifestPath() abort
   let prefix = exists('$MYVIMRC')
         \ ? $MYVIMRC
         \ : matchstr(get(split(execute('scriptnames'), '\n'), 0, ''), '\f\+$')
@@ -127,9 +158,25 @@ function! s:GetManifest() abort
 endfunction
 
 
+function! s:GetManifest() abort
+  let manifest = s:GetManifestPath()
+
+  if !filereadable(manifest)
+    " Check if an old manifest file exists and move it to the new location.
+    let old_manifest = s:GetOldManifestPath()
+    if filereadable(old_manifest)
+      call rename(old_manifest, manifest)
+    endif
+  endif
+
+  return manifest
+endfunction
+
+
 function! remote#host#LoadRemotePlugins() abort
-  if filereadable(s:GetManifest())
-    exe 'source '.s:GetManifest()
+  let manifest = s:GetManifest()
+  if filereadable(manifest)
+    execute 'source' fnameescape(manifest)
   endif
 endfunction
 
@@ -202,7 +249,7 @@ function! remote#host#UpdateRemotePlugins() abort
     endif
   endfor
   call writefile(commands, s:GetManifest())
-  echomsg printf('remote/host: generated the manifest file in "%s"',
+  echomsg printf('remote/host: generated rplugin manifest: %s',
         \ s:GetManifest())
 endfunction