diff --git a/Documentation/git-bisect.txt b/Documentation/git-bisect.txt
index 9dceaff9da..7b7bafba0c 100644
--- a/Documentation/git-bisect.txt
+++ b/Documentation/git-bisect.txt
@@ -241,7 +241,12 @@ exit(3) manual page), as the value is chopped with "& 0377".
 
 The special exit code 125 should be used when the current source code
 cannot be tested. If the script exits with this code, the current
-revision will be skipped (see `git bisect skip` above).
+revision will be skipped (see `git bisect skip` above). 125 was chosen
+as the highest sensible value to use for this purpose, because 126 and 127
+are used by POSIX shells to signal specific error status (127 is for
+command not found, 126 is for command found but not executable---these
+details do not matter, as they are normal errors in the script, as far as
+"bisect run" is concerned).
 
 You may often find that during a bisect session you want to have
 temporary modifications (e.g. s/#define DEBUG 0/#define DEBUG 1/ in a
diff --git a/builtin/grep.c b/builtin/grep.c
index eaf8560a52..0bf8c0116a 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -659,11 +659,12 @@ static int context_callback(const struct option *opt, const char *arg,
 static int file_callback(const struct option *opt, const char *arg, int unset)
 {
 	struct grep_opt *grep_opt = opt->value;
+	int from_stdin = !strcmp(arg, "-");
 	FILE *patterns;
 	int lno = 0;
 	struct strbuf sb = STRBUF_INIT;
 
-	patterns = fopen(arg, "r");
+	patterns = from_stdin ? stdin : fopen(arg, "r");
 	if (!patterns)
 		die_errno("cannot open '%s'", arg);
 	while (strbuf_getline(&sb, patterns, '\n') == 0) {
@@ -677,7 +678,8 @@ static int file_callback(const struct option *opt, const char *arg, int unset)
 		s = strbuf_detach(&sb, &len);
 		append_grep_pat(grep_opt, s, len, arg, ++lno, GREP_PATTERN);
 	}
-	fclose(patterns);
+	if (!from_stdin)
+		fclose(patterns);
 	strbuf_release(&sb);
 	return 0;
 }
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index b04ab8c9bb..9dccfb01d6 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4906,7 +4906,6 @@ sub git_log_body {
 		next if !%co;
 		my $commit = $co{'id'};
 		my $ref = format_ref_marker($refs, $commit);
-		my %ad = parse_date($co{'author_epoch'});
 		git_print_header_div('commit',
 		               "<span class=\"age\">$co{'age_string'}</span>" .
 		               esc_html($co{'title'}) . $ref,
@@ -7064,7 +7063,7 @@ sub git_feed {
 	if (defined($commitlist[0])) {
 		%latest_commit = %{$commitlist[0]};
 		my $latest_epoch = $latest_commit{'committer_epoch'};
-		%latest_date   = parse_date($latest_epoch);
+		%latest_date   = parse_date($latest_epoch, $latest_commit{'comitter_tz'});
 		my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
 		if (defined $if_modified) {
 			my $since;
@@ -7195,7 +7194,7 @@ XML
 		if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
 			last;
 		}
-		my %cd = parse_date($co{'author_epoch'});
+		my %cd = parse_date($co{'author_epoch'}, $co{'author_tz'});
 
 		# get list of changed files
 		open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index 8a7788dc39..dbc6cd8a77 100755
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -303,6 +303,11 @@ test_expect_success 'grep -f, ignore empty lines' '
 	test_cmp expected actual
 '
 
+test_expect_success 'grep -f, ignore empty lines, read patterns from stdin' '
+	git grep -f - <patterns >actual &&
+	test_cmp expected actual
+'
+
 cat >expected <<EOF
 y:y yy
 --