git-p4: correct --prepare-p4-only instructions

diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index cf11c8d6071dd791508d3bd5f46d30550765a90f..6a14d2985d12394d343cb91290111d6a8c0a5d06 100644 (file)
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -288,6 +288,22 @@ static inline int cmp_header(const struct strbuf *line, const char *hdr)
                        line->buf[len] == ':' && isspace(line->buf[len + 1]);
 }
 
+static int is_format_patch_separator(const char *line, int len)
+{
+       static const char SAMPLE[] =
+               "From e6807f3efca28b30decfecb1732a56c7db1137ee Mon Sep 17 00:00:00 2001\n";
+       const char *cp;
+
+       if (len != strlen(SAMPLE))
+               return 0;
+       if (!skip_prefix(line, "From ", &cp))
+               return 0;
+       if (strspn(cp, "0123456789abcdef") != 40)
+               return 0;
+       cp += 40;
+       return !memcmp(SAMPLE + (cp - line), cp, strlen(SAMPLE) - (cp - line));
+}
+
 static int check_header(const struct strbuf *line,
                                struct strbuf *hdr_data[], int overwrite)
 {
@@ -329,7 +345,7 @@ static int check_header(const struct strbuf *line,
 
        /* for inbody stuff */
        if (starts_with(line->buf, ">From") && isspace(line->buf[5])) {
-               ret = 1; /* Should this return 0? */
+               ret = is_format_patch_separator(line->buf + 1, line->len - 1);
                goto check_header_out;
        }
        if (starts_with(line->buf, "[PATCH]") && isspace(line->buf[7])) {