When using git-blame lots of lines contain redundant information, for
example in hunks that consist of multiple lines, the metadata (commit
name, author, date) are repeated. A reader may not be interested in those,
so offer an option to color the information that is repeated from the
previous line differently. Both the command line option '--color-lines'
as well as a config option 'color.blame.colorLines' is provided.
Signed-off-by: Stefan Beller <sbel...@google.com>
---
Documentation/config.txt | 5 +++++
builtin/blame.c | 42 ++++++++++++++++++++++++++++++++++++----
color.h | 1 +
t/t8012-blame-colors.sh | 29 +++++++++++++++++++++++++++
4 files changed, 73 insertions(+), 4 deletions(-)
create mode 100755 t/t8012-blame-colors.sh
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2659153cb3..a223232263 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1218,6 +1218,11 @@ color.status.<slot>::
status short-format), or
`unmerged` (files which have unmerged changes).
+color.blame.repeatedMeta::
+ Use the customized color for the part of git-blame output that
+ is repeated meta information per line (such as commit id,
+ author name, date and timezone). Defaults to dark gray.
+
color.ui::
This variable determines the default value for variables such
as `color.diff` and `color.grep` that control the use of color
diff --git a/builtin/blame.c b/builtin/blame.c
index db38c0b307..b49fee70a9 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -7,6 +7,7 @@
#include "cache.h"
#include "config.h"
+#include "color.h"
#include "builtin.h"
#include "commit.h"
#include "diff.h"
@@ -46,6 +47,7 @@ static int xdl_opts;
static int abbrev = -1;
static int no_whole_file_rename;
static int show_progress;
+static char repeated_meta_color[COLOR_MAXLEN];
static struct date_mode blame_date_mode = { DATE_ISO8601 };
static size_t blame_date_width;
@@ -316,10 +318,11 @@ static const char *format_time(timestamp_t time, const
char *tz_str,
#define OUTPUT_PORCELAIN 010
#define OUTPUT_SHOW_NAME 020
#define OUTPUT_SHOW_NUMBER 040
-#define OUTPUT_SHOW_SCORE 0100
-#define OUTPUT_NO_AUTHOR 0200
+#define OUTPUT_SHOW_SCORE 0100
+#define OUTPUT_NO_AUTHOR 0200
#define OUTPUT_SHOW_EMAIL 0400
-#define OUTPUT_LINE_PORCELAIN 01000
+#define OUTPUT_LINE_PORCELAIN 01000
+#define OUTPUT_COLOR_LINE 02000
static void emit_porcelain_details(struct blame_origin *suspect, int repeat)
{
@@ -375,6 +378,7 @@ static void emit_other(struct blame_scoreboard *sb, struct
blame_entry *ent, int
struct commit_info ci;
char hex[GIT_MAX_HEXSZ + 1];
int show_raw_time = !!(opt & OUTPUT_RAW_TIMESTAMP);
+ const char *color = "", *reset = "";
get_commit_info(suspect->commit, &ci, 1);
oid_to_hex_r(hex, &suspect->commit->object.oid);
@@ -384,6 +388,19 @@ static void emit_other(struct blame_scoreboard *sb, struct
blame_entry *ent, int
char ch;
int length = (opt & OUTPUT_LONG_OBJECT_NAME) ? GIT_SHA1_HEXSZ :
abbrev;
+ if (!(opt & OUTPUT_ANNOTATE_COMPAT)) {
+ if (opt & OUTPUT_COLOR_LINE) {
+ if (cnt > 0) {
+ color = repeated_meta_color;
+ reset = GIT_COLOR_RESET;
+ } else {
+ color ="";
+ reset = "";
+ }
+ }
+ fputs(color, stdout);
+ }
+
if (suspect->commit->object.flags & UNINTERESTING) {
if (blank_boundary)
memset(hex, ' ', length);
@@ -433,6 +450,9 @@ static void emit_other(struct blame_scoreboard *sb, struct
blame_entry *ent, int
printf(" %*d) ",
max_digits, ent->lno + 1 + cnt);
}
+ if (!(opt & OUTPUT_ANNOTATE_COMPAT) &&
+ (opt & OUTPUT_COLOR_LINE))
+ fputs(reset, stdout);
do {
ch = *cp++;
putchar(ch);
@@ -585,6 +605,8 @@ static const char *add_prefix(const char *prefix, const
char *path)
static int git_blame_config(const char *var, const char *value, void *cb)
{
+ int *output_option = cb;
+
if (!strcmp(var, "blame.showroot")) {
show_root = git_config_bool(var, value);
return 0;
@@ -607,6 +629,13 @@ static int git_blame_config(const char *var, const char
*value, void *cb)
parse_date_format(value, &blame_date_mode);
return 0;
}
+ if (!strcmp(var, "color.blame.repeatedlines")) {
+ if (color_parse_mem(value, strlen(value), repeated_meta_color))
+ warning(_("invalid color '%s' in
color.blame.repeatedLines"),
+ value);
+ *output_option |= OUTPUT_COLOR_LINE;
+ return 0;
+ }
if (git_diff_heuristic_config(var, value, cb) < 0)
return -1;
@@ -690,6 +719,7 @@ int cmd_blame(int argc, const char **argv, const char
*prefix)
OPT_BIT('s', NULL, &output_option, N_("Suppress author name and
timestamp (Default: off)"), OUTPUT_NO_AUTHOR),
OPT_BIT('e', "show-email", &output_option, N_("Show author
email instead of name (Default: off)"), OUTPUT_SHOW_EMAIL),
OPT_BIT('w', NULL, &xdl_opts, N_("Ignore whitespace
differences"), XDF_IGNORE_WHITESPACE),
+ OPT_BIT(0, "color-lines", &output_option, N_("color redundant
metadata from previous line differently"), OUTPUT_COLOR_LINE),
/*
* The following two options are parsed by parse_revision_opt()
@@ -949,8 +979,12 @@ int cmd_blame(int argc, const char **argv, const char
*prefix)
blame_coalesce(&sb);
- if (!(output_option & OUTPUT_PORCELAIN))
+ if (!(output_option & OUTPUT_PORCELAIN)) {
find_alignment(&sb, &output_option);
+ if (!*repeated_meta_color &&
+ (output_option & OUTPUT_COLOR_LINE))
+ strcpy(repeated_meta_color, GIT_COLOR_DARK);
+ }
output(&sb, output_option);
free((void *)sb.final_buf);
diff --git a/color.h b/color.h
index cd0bcedd08..196be16058 100644
--- a/color.h
+++ b/color.h
@@ -30,6 +30,7 @@ struct strbuf;
#define GIT_COLOR_BLUE "\033[34m"
#define GIT_COLOR_MAGENTA "\033[35m"
#define GIT_COLOR_CYAN "\033[36m"
+#define GIT_COLOR_DARK "\033[1;30m"
#define GIT_COLOR_BOLD_RED "\033[1;31m"
#define GIT_COLOR_BOLD_GREEN "\033[1;32m"
#define GIT_COLOR_BOLD_YELLOW "\033[1;33m"
diff --git a/t/t8012-blame-colors.sh b/t/t8012-blame-colors.sh
new file mode 100755
index 0000000000..bb0fe20e76
--- /dev/null
+++ b/t/t8012-blame-colors.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+test_description='colored git blame'
+. ./test-lib.sh
+
+PROG='git blame -c'
+. "$TEST_DIRECTORY"/annotate-tests.sh
+
+test_expect_success 'colored blame colors contiguous lines' '
+ git blame --abbrev=12 --color-lines hello.c >actual.raw &&
+ test_decode_color <actual.raw >actual &&
+ grep "<BOLD;BLACK>" <actual >darkened &&
+ grep "(F" darkened > F.expect &&
+ grep "(H" darkened > H.expect &&
+ test_line_count = 2 F.expect &&
+ test_line_count = 3 H.expect
+'
+
+test_expect_success 'colored blame colors contiguous lines via config' '
+ git -c color.blame.repeatedLines=yellow blame --abbrev=12 hello.c
>actual.raw &&
+ test_decode_color <actual.raw >actual &&
+ grep "<YELLOW>" <actual >darkened &&
+ grep "(F" darkened > F.expect &&
+ grep "(H" darkened > H.expect &&
+ test_line_count = 2 F.expect &&
+ test_line_count = 3 H.expect
+'
+
+test_done
--
2.17.0.484.g0c8726318c-goog
