diff options
authorEdward Thomson <>2016-05-27 03:46:10 (GMT)
committerJunio C Hamano <>2016-05-27 18:24:54 (GMT)
commitb15a3e005af07843116c73205742adfbab3d2e82 (patch)
parent0f8e831356d4f1a34baf46bb1a6b2d4c89ec9cb8 (diff)
format_commit_message: honor `color=auto` for `%C(auto)`
git-log(1) documents that when specifying the `%C(auto)` format placeholder will "turn on auto coloring on the next %placeholders until the color is switched again." However, when `%C(auto)` is used, the present implementation will turn colors on unconditionally (even if the color configuration is turned off for the current context - for example, `--no-color` was specified or the color is `auto` and the output is not a tty). Update `format_commit_one` to examine the current context when a format string of `%C(auto)` is specified, which ensures that we will not unconditionally write colors. This brings that behavior in line with the behavior of `%C(auto,<colorname>)`, and allows the user the ability to specify that color should be displayed only when the output is a tty. Additionally, add a test for `%C(auto)` and update the existing tests for `%C(auto,...)` as they were misidentified as being applicable to `%C(auto)`. Tests from Jeff King. Signed-off-by: Jeff King <> Signed-off-by: Edward Thomson <> Signed-off-by: Junio C Hamano <>
2 files changed, 20 insertions, 8 deletions
diff --git a/pretty.c b/pretty.c
index 92b2870..3908e8f 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1061,7 +1061,7 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
switch (placeholder[0]) {
case 'C':
if (starts_with(placeholder + 1, "(auto)")) {
- c->auto_color = 1;
+ c->auto_color = want_color(c->pretty_ctx->color);
return 7; /* consumed 7 bytes, "C(auto)" */
} else {
int ret = parse_color(sb, placeholder, c);
diff --git a/t/ b/t/
index b77d4c9..a1dcdb8 100755
--- a/t/
+++ b/t/
@@ -184,38 +184,38 @@ commit $head1
-test_expect_success '%C(auto) does not enable color by default' '
+test_expect_success '%C(auto,...) does not enable color by default' '
git log --format=$AUTO_COLOR -1 >actual &&
has_no_color actual
-test_expect_success '%C(auto) enables colors for color.diff' '
+test_expect_success '%C(auto,...) enables colors for color.diff' '
git -c color.diff=always log --format=$AUTO_COLOR -1 >actual &&
has_color actual
-test_expect_success '%C(auto) enables colors for color.ui' '
+test_expect_success '%C(auto,...) enables colors for color.ui' '
git -c color.ui=always log --format=$AUTO_COLOR -1 >actual &&
has_color actual
-test_expect_success '%C(auto) respects --color' '
+test_expect_success '%C(auto,...) respects --color' '
git log --format=$AUTO_COLOR -1 --color >actual &&
has_color actual
-test_expect_success '%C(auto) respects --no-color' '
+test_expect_success '%C(auto,...) respects --no-color' '
git -c color.ui=always log --format=$AUTO_COLOR -1 --no-color >actual &&
has_no_color actual
-test_expect_success TTY '%C(auto) respects --color=auto (stdout is tty)' '
+test_expect_success TTY '%C(auto,...) respects --color=auto (stdout is tty)' '
test_terminal env TERM=vt100 \
git log --format=$AUTO_COLOR -1 --color=auto >actual &&
has_color actual
-test_expect_success '%C(auto) respects --color=auto (stdout not tty)' '
+test_expect_success '%C(auto,...) respects --color=auto (stdout not tty)' '
TERM=vt100 && export TERM &&
git log --format=$AUTO_COLOR -1 --color=auto >actual &&
@@ -223,6 +223,18 @@ test_expect_success '%C(auto) respects --color=auto (stdout not tty)' '
+test_expect_success '%C(auto) respects --color' '
+ git log --color --format="%C(auto)%H" -1 >actual &&
+ printf "\\033[33m%s\\033[m\\n" $(git rev-parse HEAD) >expect &&
+ test_cmp expect actual
+test_expect_success '%C(auto) respects --no-color' '
+ git log --no-color --format="%C(auto)%H" -1 >actual &&
+ git rev-parse HEAD >expect &&
+ test_cmp expect actual
iconv -f utf-8 -t $test_encoding > commit-msg <<EOF
Test printing of complex bodies