commit: use strbuf_add() to add a length-limited string

This is shorter and simpler.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/commit.c b/builtin/commit.c
index 1c9e8e2..599fd10 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -534,7 +534,7 @@ static void export_one(const char *var, const char *s, const char *e, int hack)
        struct strbuf buf = STRBUF_INIT;
        if (hack)
                strbuf_addch(&buf, hack);
-       strbuf_addf(&buf, "%.*s", (int)(e - s), s);
+       strbuf_add(&buf, s, e - s);
        setenv(var, buf.buf, 1);
        strbuf_release(&buf);
 }