[PATCH v2] pretty.c: add %z specifier.

["Govind Salinas" <blix@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 fwrite
to print out the data since printf will terminate at a null.

Signed-off-by: Govind Salinas <blix@sophiasuchtig.com>
---
 Documentation/pretty-formats.txt |    1 +
 log-tree.c                       |    6 ++++--
 pretty.c                         |    3 +++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index 0193c3c..f4b3134 100644
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -123,3 +123,4 @@ The placeholders are:
 - '%Creset': reset color
 - '%m': left, right or boundary mark
 - '%n': newline
+- '%z': null character
diff --git a/log-tree.c b/log-tree.c
index 608f697..3bb6e49 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -308,8 +308,10 @@ 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) {
+		fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
+		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.g1d39e.dirty