blame: output porcelain "previous" header for each file

diff --git a/builtin/blame.c b/builtin/blame.c
index f618392e55f70966accc49aa7ff22de2d16f189f..d4f3ce96a563f15d4c9af531044ecefb600f5df3 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1700,13 +1700,23 @@ static void get_commit_info(struct commit *commit,
 }
 
 /*
+ * Write out any suspect information which depends on the path. This must be
+ * handled separately from emit_one_suspect_detail(), because a given commit
+ * may have changes in multiple paths. So this needs to appear each time
+ * we mention a new group.
+ *
  * To allow LF and other nonportable characters in pathnames,
  * they are c-style quoted as needed.
  */
-static void write_filename_info(const char *path)
+static void write_filename_info(struct origin *suspect)
 {
+       if (suspect->previous) {
+               struct origin *prev = suspect->previous;
+               printf("previous %s ", oid_to_hex(&prev->commit->object.oid));
+               write_name_quoted(prev->path, stdout, '\n');
+       }
        printf("filename ");
-       write_name_quoted(path, stdout, '\n');
+       write_name_quoted(suspect->path, stdout, '\n');
 }
 
 /*
@@ -1735,11 +1745,6 @@ static int emit_one_suspect_detail(struct origin *suspect, int repeat)
        printf("summary %s\n", ci.summary.buf);
        if (suspect->commit->object.flags & UNINTERESTING)
                printf("boundary\n");
-       if (suspect->previous) {
-               struct origin *prev = suspect->previous;
-               printf("previous %s ", oid_to_hex(&prev->commit->object.oid));
-               write_name_quoted(prev->path, stdout, '\n');
-       }
 
        commit_info_destroy(&ci);
 
@@ -1760,7 +1765,7 @@ static void found_guilty_entry(struct blame_entry *ent,
                       oid_to_hex(&suspect->commit->object.oid),
                       ent->s_lno + 1, ent->lno + 1, ent->num_lines);
                emit_one_suspect_detail(suspect, 0);
-               write_filename_info(suspect->path);
+               write_filename_info(suspect);
                maybe_flush_or_die(stdout, "stdout");
        }
        pi->blamed_lines += ent->num_lines;
@@ -1884,7 +1889,7 @@ static void emit_porcelain_details(struct origin *suspect, int repeat)
 {
        if (emit_one_suspect_detail(suspect, repeat) ||
            (suspect->commit->object.flags & MORE_THAN_ONE_PATH))
-               write_filename_info(suspect->path);
+               write_filename_info(suspect);
 }
 
 static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent,
@@ -2606,9 +2611,11 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
        } else if (show_progress < 0)
                show_progress = isatty(2);
 
-       if (0 < abbrev)
+       if (0 < abbrev && abbrev < GIT_SHA1_HEXSZ)
                /* one more abbrev length is needed for the boundary commit */
                abbrev++;
+       else if (!abbrev)
+               abbrev = GIT_SHA1_HEXSZ;
 
        if (revs_file && read_ancestry(revs_file))
                die_errno("reading graft file '%s' failed", revs_file);