[PATCH] pretty.c: Make user defined format honor color option

[Thomas Egerer <thomas.egerer@xxxxxxxxxxx>]

This patch fixes that the pretty-formats tformat and format ignore
git's color option.

Signed-off-by: Thomas Egerer <thomas.egerer@xxxxxxxxxxx>
---
 commit.h   |    1 +
 log-tree.c |    1 +
 pretty.c   |   29 +++++++++++++++++------------
 3 files changed, 19 insertions(+), 12 deletions(-)


diff --git a/commit.h b/commit.h
index 659c87c..d23bf99 100644
--- a/commit.h
+++ b/commit.h
@@ -78,6 +78,7 @@ struct pretty_print_context
 	int show_notes;
 	struct reflog_walk_info *reflog_info;
 	const char *output_encoding;
+	unsigned colorize:1;
 };
 
 struct userformat_want {
diff --git a/log-tree.c b/log-tree.c
index b46ed3b..63017d2 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -505,6 +505,7 @@ void show_log(struct rev_info *opt)
 	ctx.abbrev = opt->diffopt.abbrev;
 	ctx.after_subject = extra_headers;
 	ctx.reflog_info = opt->reflog_info;
+	ctx.colorize = (DIFF_OPT_TST(&opt->diffopt, COLOR_DIFF) != 0);
 	pretty_print_commit(opt->commit_format, commit, &msgbuf, &ctx);
 
 	if (opt->add_signoff)
diff --git a/pretty.c b/pretty.c
index 8549934..3c3467f 100644
--- a/pretty.c
+++ b/pretty.c
@@ -743,7 +743,10 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
 	struct format_commit_context *c = context;
 	const struct commit *commit = c->commit;
 	const char *msg = c->message;
+	char cbuf[COLOR_MAXLEN];
 	struct commit_list *p;
+	size_t consumed = 0;
+	char *color = NULL;
 	int h1, h2;
 
 	/* these are independent of the commit */
@@ -751,29 +754,31 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
 	case 'C':
 		if (placeholder[1] == '(') {
 			const char *end = strchr(placeholder + 2, ')');
-			char color[COLOR_MAXLEN];
 			if (!end)
 				return 0;
 			color_parse_mem(placeholder + 2,
 					end - (placeholder + 2),
-					"--pretty format", color);
-			strbuf_addstr(sb, color);
-			return end - placeholder + 1;
+					"--pretty format", cbuf);
+			consumed = end - placeholder + 1;
+			color = cbuf;
 		}
 		if (!prefixcmp(placeholder + 1, "red")) {
-			strbuf_addstr(sb, GIT_COLOR_RED);
-			return 4;
+			color = GIT_COLOR_RED;
+			consumed = 4;
 		} else if (!prefixcmp(placeholder + 1, "green")) {
-			strbuf_addstr(sb, GIT_COLOR_GREEN);
-			return 6;
+			color = GIT_COLOR_GREEN;
+			consumed = 6;
 		} else if (!prefixcmp(placeholder + 1, "blue")) {
-			strbuf_addstr(sb, GIT_COLOR_BLUE);
-			return 5;
+			color = GIT_COLOR_BLUE;
+			consumed = 5;
 		} else if (!prefixcmp(placeholder + 1, "reset")) {
-			strbuf_addstr(sb, GIT_COLOR_RESET);
-			return 6;
+			color = GIT_COLOR_RESET;
+			consumed = 6;
 		} else
 			return 0;
+		if (color && (c->pretty_ctx->colorize == 1))
+			strbuf_addstr(sb, color);
+		return consumed;
 	case 'n':		/* newline */
 		strbuf_addch(sb, '\n');
 		return 1;