[PATCH v5 8/8] decorate: use commit color for HEAD arrow

[Andy Koppe <andy.koppe@gmail.com>]

Use the commit color instead of the HEAD color for the arrow or custom
symbol in "HEAD -> branch" decorations, for visual consistency with the
prefix, separator and suffix symbols, which are also colored with the
commit color.

This change was triggered by the possibility that one could choose to
use the same symbol for the pointer and the separator options in
%(decorate), in which case they ought to be the same color.

A related precedent is 'ls -l', where the arrow for symlinks gets the
default color rather than that of the symlink name.

Amend test t4207-log-decoration-colors.sh accordingly.

Signed-off-by: Andy Koppe <andy.koppe@gmail.com>
---
 log-tree.c                       | 2 +-
 t/t4207-log-decoration-colors.sh | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/log-tree.c b/log-tree.c
index 50b4850eda..504da6b519 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -369,7 +369,7 @@ void format_decorations(struct strbuf *sb,
 
 			if (current_and_HEAD &&
 			    decoration->type == DECORATION_REF_HEAD) {
-				strbuf_addstr(sb, color);
+				strbuf_addstr(sb, color_commit);
 				strbuf_addstr(sb, pointer);
 				strbuf_addstr(sb, color_reset);
 				strbuf_addstr(sb, decorate_get_color(use_color, current_and_HEAD->type));
diff --git a/t/t4207-log-decoration-colors.sh b/t/t4207-log-decoration-colors.sh
index df804f38e2..21986a866d 100755
--- a/t/t4207-log-decoration-colors.sh
+++ b/t/t4207-log-decoration-colors.sh
@@ -54,7 +54,7 @@ cmp_filtered_decorations () {
 test_expect_success 'commit decorations colored correctly' '
 	cat >expect <<-EOF &&
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}${c_HEAD}HEAD${c_reset}\
-${c_HEAD} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
+${c_commit} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
 ${c_reset}${c_tag}tag: ${c_reset}${c_tag}v1.0${c_reset}${c_commit}, \
 ${c_reset}${c_tag}tag: ${c_reset}${c_tag}B${c_reset}${c_commit})${c_reset} B
 ${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\
@@ -79,7 +79,7 @@ test_expect_success 'test coloring with replace-objects' '
 
 	cat >expect <<-EOF &&
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}${c_HEAD}HEAD${c_reset}\
-${c_HEAD} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
+${c_commit} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
 ${c_reset}${c_tag}tag: ${c_reset}${c_tag}D${c_reset}${c_commit})${c_reset} D
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\
 ${c_tag}tag: ${c_reset}${c_tag}C${c_reset}${c_commit}, \
@@ -105,7 +105,7 @@ test_expect_success 'test coloring with grafted commit' '
 
 	cat >expect <<-EOF &&
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}${c_HEAD}HEAD${c_reset}\
-${c_HEAD} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
+${c_commit} -> ${c_reset}${c_branch}main${c_reset}${c_commit}, \
 ${c_reset}${c_tag}tag: ${c_reset}${c_tag}D${c_reset}${c_commit}, \
 ${c_reset}${c_grafted}replaced${c_reset}${c_commit})${c_reset} D
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\
-- 
2.42.0-rc2