Commit 11b087ad authored by Jeff King's avatar Jeff King Committed by Junio C Hamano

ref-filter: consult want_color() before emitting colors

When color placeholders like %(color:red) are used in a
ref-filter format, we unconditionally output the colors,
even if the user has asked us for no colors. This usually
isn't a problem when the user is constructing a --format on
the command line, but it means we may do the wrong thing
when the format is fed from a script or alias. For example:

   $ git config alias.b 'branch --format=%(color:green)%(refname)'
   $ git b --no-color

should probably omit the green color. Likewise, running:

   $ git b >branches

should probably also omit the color, just as we would for
all baked-in coloring (and as we recently started to do for
user-specified colors in --pretty formats).

This commit makes both of those cases work by teaching
the ref-filter code to consult want_color() before
outputting any color. The color flag in ref_format defaults
to "-1", which means we'll consult color.ui, which in turn
defaults to the usual isatty() check on stdout. However,
callers like git-branch which support their own color config
(and command-line options) can override that.

The new tests independently cover all three of the callers
of ref-filter (for-each-ref, tag, and branch). Even though
these seem redundant, it confirms that we've correctly
plumbed through all of the necessary config to make colors
work by default.
Signed-off-by: default avatarJeff King <peff@peff.net>
Signed-off-by: default avatarJunio C Hamano <gitster@pobox.com>
parent 18fb7ffc
......@@ -409,6 +409,7 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
if (!format->format)
format->format = to_free = build_format(filter, maxwidth, remote_prefix);
format->use_color = branch_use_color;
if (verify_ref_format(format))
die(_("unable to parse format string"));
......
......@@ -104,6 +104,12 @@ static void color_atom_parser(const struct ref_format *format, struct used_atom
die(_("expected format: %%(color:<color>)"));
if (color_parse(color_value, atom->u.color) < 0)
die(_("unrecognized color: %%(color:%s)"), color_value);
/*
* We check this after we've parsed the color, which lets us complain
* about syntactically bogus color names even if they won't be used.
*/
if (!want_color(format->use_color))
color_parse("", atom->u.color);
}
static void refname_atom_parser_internal(struct refname_atom *atom,
......@@ -675,6 +681,8 @@ int verify_ref_format(struct ref_format *format)
if (skip_prefix(used_atom[at].name, "color:", &color))
format->need_color_reset_at_eol = !!strcmp(color, "reset");
}
if (format->need_color_reset_at_eol && !want_color(format->use_color))
format->need_color_reset_at_eol = 0;
return 0;
}
......
......@@ -79,12 +79,13 @@ struct ref_format {
*/
const char *format;
int quote_style;
int use_color;
/* Internal state to ref-filter */
int need_color_reset_at_eol;
};
#define REF_FORMAT_INIT { NULL, 0 }
#define REF_FORMAT_INIT { NULL, 0, -1 }
/* Macros for checking --merged and --no-merged options */
#define _OPT_MERGED_NO_MERGED(option, filter, h) \
......
......@@ -2,6 +2,7 @@
test_description='git branch display tests'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
test_expect_success 'make commits' '
echo content >file &&
......@@ -239,4 +240,34 @@ test_expect_success 'git branch --format option' '
test_i18ncmp expect actual
'
test_expect_success "set up color tests" '
echo "<RED>master<RESET>" >expect.color &&
echo "master" >expect.bare &&
color_args="--format=%(color:red)%(refname:short) --list master"
'
test_expect_success '%(color) omitted without tty' '
TERM=vt100 git branch $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.bare actual
'
test_expect_success TTY '%(color) present with tty' '
test_terminal env TERM=vt100 git branch $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.color actual
'
test_expect_success 'color.branch=always overrides auto-color' '
git -c color.branch=always branch $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.color actual
'
test_expect_success '--color overrides auto-color' '
git branch --color $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.color actual
'
test_done
......@@ -7,6 +7,7 @@ test_description='for-each-ref test'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-gpg.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
# Mon Jul 3 23:18:43 2006 +0000
datestamp=1151968723
......@@ -412,19 +413,33 @@ test_expect_success 'Check for invalid refname format' '
test_must_fail git for-each-ref --format="%(refname:INVALID)"
'
cat >expected <<EOF
$(git rev-parse --short refs/heads/master) <GREEN>master<RESET>
$(git rev-parse --short refs/remotes/origin/master) <GREEN>origin/master<RESET>
$(git rev-parse --short refs/tags/testtag) <GREEN>testtag<RESET>
$(git rev-parse --short refs/tags/two) <GREEN>two<RESET>
EOF
test_expect_success 'set up color tests' '
cat >expected.color <<-EOF &&
$(git rev-parse --short refs/heads/master) <GREEN>master<RESET>
$(git rev-parse --short refs/remotes/origin/master) <GREEN>origin/master<RESET>
$(git rev-parse --short refs/tags/testtag) <GREEN>testtag<RESET>
$(git rev-parse --short refs/tags/two) <GREEN>two<RESET>
EOF
sed "s/<[^>]*>//g" <expected.color >expected.bare &&
color_format="%(objectname:short) %(color:green)%(refname:short)"
'
test_expect_success 'Check %(color:...) ' '
git for-each-ref \
--format="%(objectname:short) %(color:green)%(refname:short)" \
>actual.raw &&
test_expect_success TTY '%(color) shows color with a tty' '
test_terminal env TERM=vt100 \
git for-each-ref --format="$color_format" >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expected actual
test_cmp expected.color actual
'
test_expect_success '%(color) does not show color without tty' '
TERM=vt100 git for-each-ref --format="$color_format" >actual &&
test_cmp expected.bare actual
'
test_expect_success 'color.ui=always can override tty check' '
git -c color.ui=always for-each-ref --format="$color_format" >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expected.color actual
'
cat >expected <<\EOF
......
......@@ -9,6 +9,7 @@ Tests for operations with tags.'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-gpg.sh
. "$TEST_DIRECTORY"/lib-terminal.sh
# creating and listing lightweight tags:
......@@ -1900,6 +1901,30 @@ test_expect_success '--format should list tags as per format given' '
test_cmp expect actual
'
test_expect_success "set up color tests" '
echo "<RED>v1.0<RESET>" >expect.color &&
echo "v1.0" >expect.bare &&
color_args="--format=%(color:red)%(refname:short) --list v1.0"
'
test_expect_success '%(color) omitted without tty' '
TERM=vt100 git tag $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.bare actual
'
test_expect_success TTY '%(color) present with tty' '
test_terminal env TERM=vt100 git tag $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.color actual
'
test_expect_success 'color.ui=always overrides auto-color' '
git -c color.ui=always tag $color_args >actual.raw &&
test_decode_color <actual.raw >actual &&
test_cmp expect.color actual
'
test_expect_success 'setup --merged test tags' '
git tag mergetest-1 HEAD~2 &&
git tag mergetest-2 HEAD~1 &&
......
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