Merge branch 'maint'

* maint:
  checkout: don't rfc2047-encode oneline on detached HEAD
  filter-branch: Documentation fix.

Author: gitster

Documentation/git-filter-branch.txt

@@ -243,12 +243,12 @@ committed a merge between P1 and P2, it will be propagated properly
 and all children of the merge will become merge commits with P1,P2
 as their parents instead of the merge commit.
 
-You can rewrite the commit log messages using `--message-filter`.  For
+You can rewrite the commit log messages using `--msg-filter`.  For
 example, `git-svn-id` strings in a repository created by `git-svn` can
 be removed this way:
 
 -------------------------------------------------------
-git filter-branch --message-filter '
+git filter-branch --msg-filter '
 	sed -e "/^git-svn-id:/d"
 '
 -------------------------------------------------------

builtin-checkout.c

@@ -142,7 +142,7 @@ static void describe_detached_head(char *msg, struct commit *commit)
 	struct strbuf sb;
 	strbuf_init(&sb, 0);
 	parse_commit(commit);
-	pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, 0, "", "", 0, 0);
+	pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, 0, NULL, NULL, 0, 0);
 	fprintf(stderr, "%s %s... %s\n", msg,
 		find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV), sb.buf);
 	strbuf_release(&sb);