vim-patch:7.4.2244

Problem:    Adding pattern to ":oldfiles" is not a generic solution.
Solution:   Add the ":filter /pat/ cmd" command modifier.  Only works for some
            commands right now.

7b668e83d0

src/nvim/ex_cmds.lua

@@ -930,6 +930,12 @@ return {
     addr_type=ADDR_LINES,
     func='ex_filetype',
   },
+  {
+    command='filter',
+    flags=bit.bor(NEEDARG, EXTRA, NOTRLCOM),
+    addr_type=ADDR_LINES,
+    func='ex_wrongmodifier',
+  },
   {
     command='find',
     flags=bit.bor(RANGE, NOTADR, BANG, FILE1, EDITCMD, ARGOPT, TRLBAR),
@@ -1810,7 +1816,7 @@ return {
   },
   {
     command='oldfiles',
-    flags=bit.bor(BANG, TRLBAR, NOTADR, EXTRA, SBOXOK, CMDWIN),
+    flags=bit.bor(BANG, TRLBAR, SBOXOK, CMDWIN),
     addr_type=ADDR_LINES,
     func='ex_oldfiles',
   },