[PATCH] pretty.c: add %z specifier.

["Govind Salinas" <govind@sophiasuchtig.com>]

This adds a %z format which prints out a null character.  This allows for
easier machine parsing of multiline data.  It is also necessary to use write
to print out the data since printf will terminate at a null.  That in turn
requires that an fflush be executed before the write to preserve the order
the data is printed.

Signed-off-by: Govind Salinas <blix@sophiasuchtig.com>
---
 log-tree.c |    7 +++++--
 pretty.c   |    3 +++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/log-tree.c b/log-tree.c
index 608f697..e116a1f 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -308,8 +308,11 @@ void show_log(struct rev_info *opt, const char *sep)
 	if (opt->show_log_size)
 		printf("log size %i\n", (int)msgbuf.len);

-	if (msgbuf.len)
-		printf("%s%s%s", msgbuf.buf, extra, sep);
+	if (msgbuf.len) {
+		fflush(stdout);
+		write(STDOUT_FILENO, msgbuf.buf, msgbuf.len);
+		printf("%s%s", extra, sep);
+	}
 	strbuf_release(&msgbuf);
 }

diff --git a/pretty.c b/pretty.c
index 703f521..fd155ec 100644
--- a/pretty.c
+++ b/pretty.c
@@ -478,6 +478,9 @@ static size_t format_commit_item(struct strbuf
*sb, const char *placeholder,
 	case 'n':		/* newline */
 		strbuf_addch(sb, '\n');
 		return 1;
+	case 'z':		/* null */
+		strbuf_addch(sb, '\0');
+		return 1;
 	}

 	/* these depend on the commit */
-- 
1.5.4.4.552.g9987b