diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
index 67560eb..5335496 100644
--- a/autoload/fugitive.vim
+++ b/autoload/fugitive.vim
@@ -2785,17 +2785,19 @@ function! fugitive#BufReadStatus() abort
   endtry
 endfunction
 
-function! fugitive#FileRead() abort
-  let [dir, rev] = s:DirRev(expand('<amatch>'))
+function! fugitive#FileReadCmd(...) abort
+  let amatch = a:0 ? a:1 : expand('<amatch>')
+  let [dir, rev] = s:DirRev(amatch)
+  let line = a:0 > 1 ? a:2 : line("'[")
   if empty(dir)
-    return "noautocmd '[read <amatch>"
+    return 'noautocmd ' . line . 'read ' . s:fnameescape(amatch)
   endif
   if rev !~# ':'
     let cmd = fugitive#Prepare(dir, 'log', '--pretty=format:%B', '-1', rev)
   else
     let cmd = fugitive#Prepare(dir, 'cat-file', '-p', rev)
   endif
-  return "'[read !" . escape(cmd, '!#%')
+  return line . 'read !' . escape(cmd, '!#%')
 endfunction
 
 function! fugitive#BufReadIndex() abort
diff --git a/plugin/fugitive.vim b/plugin/fugitive.vim
index a916c9e..9b0e20f 100644
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@@ -179,11 +179,11 @@ augroup fugitive
         \   read <amatch> |
         \   1delete |
         \ endif
-  autocmd FileReadCmd fugitive://**//[0-3]/**          exe fugitive#FileRead()
-  autocmd BufReadCmd  fugitive://**//[0-3]/**          exe fugitive#BufReadIndex()
-  autocmd BufWriteCmd fugitive://**//[0-3]/**          exe fugitive#BufWriteIndex()
-  autocmd BufReadCmd  fugitive://**//[0-9a-f][0-9a-f]* exe fugitive#BufReadObject()
-  autocmd FileReadCmd fugitive://**//[0-9a-f][0-9a-f]* exe fugitive#FileRead()
+  autocmd BufReadCmd  fugitive://*//[0-3]/*           exe fugitive#BufReadIndex()
+  autocmd BufWriteCmd fugitive://*//[0-3]/*           exe fugitive#BufWriteIndex()
+  autocmd BufReadCmd  fugitive://*//[0-9a-f][0-9a-f]* exe fugitive#BufReadObject()
+  autocmd FileReadCmd fugitive://*//*                 exe fugitive#FileReadCmd()
+  autocmd SourceCmd   fugitive://*//*          nested exe fugitive#SourceCmd()
 
   autocmd User Flags call Hoist('buffer', function('FugitiveStatusline'))
 augroup END