[PATCH 3/3] blame: support multiple values in blame.coloring

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From: Robert Estelle <robertestelle@xxxxxxxxx>

`blame.coloring` is now parsed as a comma-separated list, so that both
colorizers ("by age" and "by repeated lines") can be enabled via
configuration. Previously, they could be specified together on the
command line via --color-by-age and --color-lines, but not by config.

Signed-off-by: Robert Estelle <robertestelle@xxxxxxxxx>
---
 Documentation/config/blame.txt |  1 +
 builtin/blame.c                | 47 +++++++++++++++++++++++++---------
 t/t8012-blame-colors.sh        |  8 ++++++
 3 files changed, 44 insertions(+), 12 deletions(-)

diff --git a/Documentation/config/blame.txt b/Documentation/config/blame.txt
index 4d047c17908..8624c4dc5d4 100644
--- a/Documentation/config/blame.txt
+++ b/Documentation/config/blame.txt
@@ -6,6 +6,7 @@ blame.coloring::
 	This determines the coloring scheme to be applied to blame
 	output. It can be 'repeatedLines', 'highlightRecent',
 	or 'none' which is the default.
+	Multiple values may be separated by commas.
 
 blame.date::
 	Specifies the format used to output dates in linkgit:git-blame[1].
diff --git a/builtin/blame.c b/builtin/blame.c
index 71f925e456c..eea1418d209 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -685,6 +685,39 @@ static const char *add_prefix(const char *prefix, const char *path)
 	return prefix_path(prefix, prefix ? strlen(prefix) : 0, path);
 }
 
+static unsigned parse_blame_coloring_mode(const char *arg)
+{
+	int ret = 0;
+	struct string_list l = STRING_LIST_INIT_DUP;
+	struct string_list_item *i;
+
+	string_list_split(&l, arg, ',', -1);
+
+	for_each_string_list_item(i, &l) {
+		struct strbuf sb = STRBUF_INIT;
+		strbuf_addstr(&sb, i->string);
+		strbuf_trim(&sb);
+
+		if (!strcmp(sb.buf, "none")) {
+			ret = 0;
+		} else if (!strcmp(sb.buf, "repeatedLines")) {
+			ret |= OUTPUT_COLOR_LINE;
+		} else if (!strcmp(sb.buf, "highlightRecent")) {
+			ret |= OUTPUT_SHOW_AGE_WITH_COLOR;
+		} else {
+			warning(_("invalid value for '%s': '%s'"),
+				"blame.coloring", sb.buf);
+			ret = 0;
+		}
+
+		strbuf_release(&sb);
+	}
+
+	string_list_clear(&l, 0);
+
+	return ret;
+}
+
 static int git_blame_config(const char *var, const char *value, void *cb)
 {
 	if (!strcmp(var, "blame.showroot")) {
@@ -739,18 +772,8 @@ static int git_blame_config(const char *var, const char *value, void *cb)
 	}
 
 	if (!strcmp(var, "blame.coloring")) {
-		if (!strcmp(value, "repeatedLines")) {
-			coloring_mode |= OUTPUT_COLOR_LINE;
-		} else if (!strcmp(value, "highlightRecent")) {
-			coloring_mode |= OUTPUT_SHOW_AGE_WITH_COLOR;
-		} else if (!strcmp(value, "none")) {
-			coloring_mode &= ~(OUTPUT_COLOR_LINE |
-					    OUTPUT_SHOW_AGE_WITH_COLOR);
-		} else {
-			warning(_("invalid value for '%s': '%s'"),
-				"blame.coloring", value);
-			return 0;
-		}
+		coloring_mode = parse_blame_coloring_mode(value);
+		return 0;
 	}
 
 	if (git_diff_heuristic_config(var, value, cb) < 0)
diff --git a/t/t8012-blame-colors.sh b/t/t8012-blame-colors.sh
index 820f86c3aed..051f734ea03 100755
--- a/t/t8012-blame-colors.sh
+++ b/t/t8012-blame-colors.sh
@@ -89,6 +89,14 @@ test_expect_success 'blame color by age and lines' '
 		hello.c \
 		>actual.raw &&
 
+	git \
+		-c color.blame.repeatedLines=blue \
+		-c color.blame.highlightRecent="yellow,1 month ago, cyan" \
+		-c blame.coloring=highlightRecent,repeatedLines \
+		blame hello.c \
+		>actual.raw.2 &&
+	test_cmp actual.raw actual.raw.2 &&
+
 	test_decode_color <actual.raw >actual &&
 	normalize_color_decoded_blame <actual >actual.norm &&
 
-- 
gitgitgadget



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