Document --unified/-U option

diff --git a/log-tree.c b/log-tree.c
index 4bef909144b2b5b402ee7cf0d959a0995c00ff0e..8624d5a39ca3119fe7c4204a2c3b1f272a4b609d 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -79,16 +79,25 @@ static int detect_any_signoff(char *letter, int size)
        return seen_head && seen_name;
 }
 
-static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
+static unsigned long append_signoff(char **buf_p, unsigned long *buf_sz_p,
+                                   unsigned long at, const char *signoff)
 {
        static const char signed_off_by[] = "Signed-off-by: ";
-       int signoff_len = strlen(signoff);
+       size_t signoff_len = strlen(signoff);
        int has_signoff = 0;
-       char *cp = buf;
-
-       /* Do we have enough space to add it? */
-       if (buf_sz - at <= strlen(signed_off_by) + signoff_len + 3)
-               return at;
+       char *cp;
+       char *buf;
+       unsigned long buf_sz;
+
+       buf = *buf_p;
+       buf_sz = *buf_sz_p;
+       if (buf_sz <= at + strlen(signed_off_by) + signoff_len + 3) {
+               buf_sz += strlen(signed_off_by) + signoff_len + 3;
+               buf = xrealloc(buf, buf_sz);
+               *buf_p = buf;
+               *buf_sz_p = buf_sz;
+       }
+       cp = buf;
 
        /* First see if we already have the sign-off by the signer */
        while ((cp = strstr(cp, signed_off_by))) {
@@ -133,7 +142,8 @@ static unsigned int digits_in_number(unsigned int number)
 
 void show_log(struct rev_info *opt, const char *sep)
 {
-       static char this_header[16384];
+       char *msgbuf = NULL;
+       unsigned long msgbuf_len = 0;
        struct log_info *log = opt->loginfo;
        struct commit *commit = log->commit, *parent = log->parent;
        int abbrev = opt->diffopt.abbrev;
@@ -190,7 +200,7 @@ void show_log(struct rev_info *opt, const char *sep)
                                        digits_in_number(opt->total),
                                        opt->nr, opt->total);
                        subject = buffer;
-               } else if (opt->total == 0) {
+               } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
                        static char buffer[256];
                        snprintf(buffer, sizeof(buffer),
                                        "Subject: [%s] ",
@@ -278,14 +288,15 @@ void show_log(struct rev_info *opt, const char *sep)
        /*
         * And then the pretty-printed message itself
         */
-       len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header,
-                                 sizeof(this_header), abbrev, subject,
+       len = pretty_print_commit(opt->commit_format, commit, ~0u,
+                                 &msgbuf, &msgbuf_len, abbrev, subject,
                                  extra_headers, opt->date_mode);
 
        if (opt->add_signoff)
-               len = append_signoff(this_header, sizeof(this_header), len,
+               len = append_signoff(&msgbuf, &msgbuf_len, len,
                                     opt->add_signoff);
-       printf("%s%s%s", this_header, extra, sep);
+       printf("%s%s%s", msgbuf, extra, sep);
+       free(msgbuf);
 }
 
 int log_tree_diff_flush(struct rev_info *opt)
@@ -397,5 +408,6 @@ int log_tree_commit(struct rev_info *opt, struct commit *commit)
                shown = 1;
        }
        opt->loginfo = NULL;
+       maybe_flush_or_die(stdout, "stdout");
        return shown;
 }