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-rw-r--r--Documentation/git-blame.txt7
-rw-r--r--builtin/blame.c9
2 files changed, 14 insertions, 2 deletions
diff --git a/Documentation/git-blame.txt b/Documentation/git-blame.txt
index c4d1ff86c9..bb8edb4abc 100644
--- a/Documentation/git-blame.txt
+++ b/Documentation/git-blame.txt
@@ -9,7 +9,7 @@ SYNOPSIS
--------
[verse]
'git blame' [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-e] [-p] [-w] [--incremental] [-L n,m]
- [-S <revs-file>] [-M] [-C] [-C] [-C] [--since=<date>]
+ [-S <revs-file>] [-M] [-C] [-C] [-C] [--since=<date>] [--abbrev=<n>]
[<rev> | --contents <file> | --reverse <rev>] [--] <file>
DESCRIPTION
@@ -73,6 +73,11 @@ include::blame-options.txt[]
Ignore whitespace when comparing the parent's version and
the child's to find where the lines came from.
+--abbrev=<n>::
+ Instead of using the default 7+1 hexadecimal digits as the
+ abbreviated object name, use <n>+1 digits. Note that 1 column
+ is used for a caret to mark the boundary commit.
+
THE PORCELAIN FORMAT
--------------------
diff --git a/builtin/blame.c b/builtin/blame.c
index f6b03f750a..4639788178 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -41,6 +41,7 @@ static int reverse;
static int blank_boundary;
static int incremental;
static int xdl_opts;
+static int abbrev = -1;
static enum date_mode blame_date_mode = DATE_ISO8601;
static size_t blame_date_width;
@@ -1670,7 +1671,7 @@ static void emit_other(struct scoreboard *sb, struct blame_entry *ent, int opt)
cp = nth_line(sb, ent->lno);
for (cnt = 0; cnt < ent->num_lines; cnt++) {
char ch;
- int length = (opt & OUTPUT_LONG_OBJECT_NAME) ? 40 : 8;
+ int length = (opt & OUTPUT_LONG_OBJECT_NAME) ? 40 : abbrev;
if (suspect->commit->object.flags & UNINTERESTING) {
if (blank_boundary)
@@ -2310,6 +2311,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
{ OPTION_CALLBACK, 'C', NULL, &opt, "score", "Find line copies within and across files", PARSE_OPT_OPTARG, blame_copy_callback },
{ OPTION_CALLBACK, 'M', NULL, &opt, "score", "Find line movements within and across files", PARSE_OPT_OPTARG, blame_move_callback },
OPT_CALLBACK('L', NULL, &bottomtop, "n,m", "Process only line range n,m, counting from 1", blame_bottomtop_callback),
+ OPT__ABBREV(&abbrev),
OPT_END()
};
@@ -2345,6 +2347,11 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
parse_done:
argc = parse_options_end(&ctx);
+ if (abbrev == -1)
+ abbrev = default_abbrev;
+ /* one more abbrev length is needed for the boundary commit */
+ abbrev++;
+
if (revs_file && read_ancestry(revs_file))
die_errno("reading graft file '%s' failed", revs_file);