patch 9.1.0492: filetype: Vim-script files not detected by shebang line

Problem:  Vim-script files may not be recognised
Solution: Add shebang line detection (Doug Kearns)

closes: #15012

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/autoload/dist/script.vim

@@ -229,6 +229,10 @@ export def Exe2filetype(name: string, line1: string): string
   elseif name =~ '^execlineb\>'
     return 'execline'
 
+    # Vim
+  elseif name =~ '^vim\>'
+    return 'vim'
+
   endif
 
   return ''

src/testdir/test_filetype.vim

@@ -994,6 +994,7 @@ def s:GetScriptChecks(): dict<list<list<string>>>
             ['#!/path/regina']],
     janet:  [['#!/path/janet']],
     dart:   [['#!/path/dart']],
+    vim:    [['#!/path/vim']],
   }
 enddef
 

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    492,
 /**/
     491,
 /**/