commit d29459baa61819e59961804ed258efac5733ec70
author Bram Moolenaar <Bram@vim.org> Fri Aug 26 22:29:11 2016 +0200
committer Bram Moolenaar <Bram@vim.org> Fri Aug 26 22:29:11 2016 +0200
tree 11154e516a0d506808a6bb51d77add58af7d6e16
parent 257095760732597983bdd026e791907b7980e295

patch 7.4.2263
Problem:    :filter does not work for many commands.  Can only get matching
            messages.
Solution:   Make :filter work for :command, :map, :list, :number and :print.
            Make ":filter!" show non-matching lines.

src/structs.h

diff --git a/src/structs.h b/src/structs.h
index e559220..e581e43 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -572,6 +572,7 @@
     char_u	*save_ei;		/* saved value of 'eventignore' */
 # endif
     regmatch_T	filter_regmatch;	/* set by :filter /pat/ */
+    int		filter_force;		/* set for :filter! */
 } cmdmod_T;
 
 #define MF_SEED_LEN	8