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

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

[Thomas Egerer]

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

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



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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;

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

[Will Palmer]

On Thu, 2011-03-17 at 09:33 +0100, Thomas Egerer wrote:
> This patch fixes that the pretty-formats tformat and format ignore
> git's color option.

It is my understanding that this is intentional, the logic being: If you
normally don't want color, but have specified it directly on the
command-line, you probably want color.

It is arguable that this logic does not hold for format aliases, of
course. (and personally I've never agreed with the above logic anyway)

iirc, there are a couple of other places beyond log-tree.c which need to
propagate COLOR_DIFF into the pretty context if you want to respect the
colour option in user-specified formats. Skimming my own diffs:
rev-list.c and shortlog.c

Of course, explicitly propagating "diff_opts" settings like this just
shows off how poorly named these things are if we're going to use them
for this sort of thing. That's probably a place for another patch,
though.

I've got a patch to add support for conditional formats, including such
things as: %(opt-color: %Cred%h%Creset, %h). I'm currently in the
process of re-rolling just the "long options" part of that into
something more-manageable, but honestly that's the bulk of the change,
so if that gets accepted then adding %(opt-color...) would be pretty
trivial.

--Will

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

[Thomas Egerer]

On 03/17/2011 10:39 AM, Will Palmer schrobtete:
> On Thu, 2011-03-17 at 09:33 +0100, Thomas Egerer wrote:
>> This patch fixes that the pretty-formats tformat and format ignore
>> git's color option.
> 
> It is my understanding that this is intentional, the logic being: If you
> normally don't want color, but have specified it directly on the
> command-line, you probably want color.
I'm using the pretty format in the context of an alias. My global setting
for colors is auto. I would expect git to not disregard this options. I
usually use the alias to display a git log in a modified way, but I also
do sometimes pipe it to grep. If there was a way to suppress output
colorization (let's say by not using global options but the command line
switch --color=never) that would work for me. But there is no wa and I
find it inconvinient to have two different aliases doing the same thing
one with color and one without while there would be a much simpler way.

> iirc, there are a couple of other places beyond log-tree.c which need to
> propagate COLOR_DIFF into the pretty context if you want to respect the
> colour option in user-specified formats. Skimming my own diffs:
> rev-list.c and shortlog.c
You're right. If there's a chance to bring this upstream, I would include
it in a revised versoin of my patch.

Thomas

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

[Will Palmer]

On Thu, 2011-03-17 at 13:02 +0100, Thomas Egerer wrote:
> On 03/17/2011 10:39 AM, Will Palmer schrobtete:
> > On Thu, 2011-03-17 at 09:33 +0100, Thomas Egerer wrote:
> >> This patch fixes that the pretty-formats tformat and format ignore
> >> git's color option.
> > 
> > It is my understanding that this is intentional, the logic being: If you
> > normally don't want color, but have specified it directly on the
> > command-line, you probably want color.
> I'm using the pretty format in the context of an alias. My global setting
> for colors is auto. I would expect git to not disregard this options. I
> usually use the alias to display a git log in a modified way, but I also
> do sometimes pipe it to grep. If there was a way to suppress output
> colorization (let's say by not using global options but the command line
> switch --color=never) that would work for me. But there is no wa and I
> find it inconvinient to have two different aliases doing the same thing
> one with color and one without while there would be a much simpler way.
...snip
> Thomas

Perhaps --color=auto, specified on the command-line, should behave
differently to the various color options specified via config. That
might make both sides happy, as one could always specify --color=auto to
explicitly tell git to only color if it thinks it should.

Can anyone else refresh my memory regarding the use-case where
hand-specified colors really should have an effect even with
--color=never?

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

[Jeff King]

On Thu, Mar 17, 2011 at 12:59:52PM +0000, Will Palmer wrote:

> Perhaps --color=auto, specified on the command-line, should behave
> differently to the various color options specified via config. That
> might make both sides happy, as one could always specify --color=auto to
> explicitly tell git to only color if it thinks it should.
> 
> Can anyone else refresh my memory regarding the use-case where
> hand-specified colors really should have an effect even with
> --color=never?

Without doing any digging on the list and just from the top of my head,
I don't think it was ever really an intentional feature that format
should ignore color settings. It simply wasn't bothered with because in
the beginning, the only way to specify a format was on the command line.
Now as we see them used in aliases, it probably makes sense to respect
the color setting. If one wants the current behavior, they can always
use --color=always.

So I think the intent of Thomas' patch is a good change, though I
haven't really looked closely at the patch itself.

-Peff

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

[Thomas Egerer]

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

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
---
 builtin/log.c      |    2 +-
 builtin/rev-list.c |    1 +
 builtin/shortlog.c |    5 +++--
 commit.h           |    1 +
 log-tree.c         |    1 +
 pretty.c           |   29 +++++++++++++++++------------
 shortlog.h         |    2 +-
 7 files changed, 25 insertions(+), 16 deletions(-)



0001-pretty.c-Make-user-defined-format-honor-color-option.patch

diff --git a/builtin/log.c b/builtin/log.c
index f5ed690..d65d268 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -780,7 +780,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	log.in1 = 2;
 	log.in2 = 4;
 	for (i = 0; i < nr; i++)
-		shortlog_add_commit(&log, list[i]);
+		shortlog_add_commit(rev, &log, list[i]);

 	shortlog_output(&log);

diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index ba27d39..7dcd659 100644
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -108,6 +108,7 @@ static void show_commit(struct commit *commit, void *data)
 		struct pretty_print_context ctx = {0};
 		ctx.abbrev = revs->abbrev;
 		ctx.date_mode = revs->date_mode;
+		ctx.colorize = (DIFF_OPT_TST(&revs->diffopt, COLOR_DIFF) != 0);
 		pretty_print_commit(revs->commit_format, commit, &buf, &ctx);
 		if (revs->graph) {
 			if (buf.len) {
diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index 1a21e4b..401525e 100644
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -136,7 +136,7 @@ static void read_from_stdin(struct shortlog *log)
 	}
 }

-void shortlog_add_commit(struct shortlog *log, struct commit *commit)
+void shortlog_add_commit(struct rev_info * rev, struct shortlog *log, struct commit *commit)
 {
 	const char *author = NULL, *buffer;
 	struct strbuf buf = STRBUF_INIT;
@@ -166,6 +166,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 		ctx.subject = "";
 		ctx.after_subject = "";
 		ctx.date_mode = DATE_NORMAL;
+		ctx.colorize = (DIFF_OPT_TST(&rev->diffopt, COLOR_DIFF) != 0);
 		pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &ufbuf, &ctx);
 		buffer = ufbuf.buf;
 	} else if (*buffer) {
@@ -183,7 +184,7 @@ static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 	if (prepare_revision_walk(rev))
 		die("revision walk setup failed");
 	while ((commit = get_revision(rev)) != NULL)
-		shortlog_add_commit(log, commit);
+		shortlog_add_commit(rev, log, commit);
 }

 static int parse_uint(char const **arg, int comma, int defval)
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)This patch fixes that the pretty-formats tformat and format ignore
git's color option.

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
---
 builtin/log.c      |    2 +-
 builtin/rev-list.c |    1 +
 builtin/shortlog.c |    5 +++--
 commit.h           |    1 +
 log-tree.c         |    1 +
 pretty.c           |   29 +++++++++++++++++------------
 shortlog.h         |    2 +-
 7 files changed, 25 insertions(+), 16 deletions(-)



0001-pretty.c-Make-user-defined-format-honor-color-option.patch

diff --git a/builtin/log.c b/builtin/log.c
index f5ed690..d65d268 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -780,7 +780,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	log.in1 = 2;
 	log.in2 = 4;
 	for (i = 0; i < nr; i++)
-		shortlog_add_commit(&log, list[i]);
+		shortlog_add_commit(rev, &log, list[i]);

 	shortlog_output(&log);

diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index ba27d39..7dcd659 100644
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -108,6 +108,7 @@ static void show_commit(struct commit *commit, void *data)
 		struct pretty_print_context ctx = {0};
 		ctx.abbrev = revs->abbrev;
 		ctx.date_mode = revs->date_mode;
+		ctx.colorize = (DIFF_OPT_TST(&revs->diffopt, COLOR_DIFF) != 0);
 		pretty_print_commit(revs->commit_format, commit, &buf, &ctx);
 		if (revs->graph) {
 			if (buf.len) {
diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index 1a21e4b..401525e 100644
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -136,7 +136,7 @@ static void read_from_stdin(struct shortlog *log)
 	}
 }

-void shortlog_add_commit(struct shortlog *log, struct commit *commit)
+void shortlog_add_commit(struct rev_info * rev, struct shortlog *log, struct commit *commit)
 {
 	const char *author = NULL, *buffer;
 	struct strbuf buf = STRBUF_INIT;
@@ -166,6 +166,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 		ctx.subject = "";
 		ctx.after_subject = "";
 		ctx.date_mode = DATE_NORMAL;
+		ctx.colorize = (DIFF_OPT_TST(&rev->diffopt, COLOR_DIFF) != 0);
 		pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &ufbuf, &ctx);
 		buffer = ufbuf.buf;
 	} else if (*buffer) {
@@ -183,7 +184,7 @@ static void get_from_rev(struct rev_info *rev, struct shortlog *log)
 	if (prepare_revision_walk(rev))
 		die("revision walk setup failed");
 	while ((commit = get_revision(rev)) != NULL)
-		shortlog_add_commit(log, commit);
+		shortlog_add_commit(rev, log, commit);
 }

 static int parse_uint(char const **arg, int comma, int defval)
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;
diff --git a/shortlog.h b/shortlog.h
index de4f86f..0da5f97 100644
--- a/shortlog.h
+++ b/shortlog.h
@@ -21,7 +21,7 @@ struct shortlog {

 void shortlog_init(struct shortlog *log);

-void shortlog_add_commit(struct shortlog *log, struct commit *commit);
+void shortlog_add_commit(struct rev_info *rev, struct shortlog *log, struct commit *commit);

 void shortlog_output(struct shortlog *log);


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;
diff --git a/shortlog.h b/shortlog.h
index de4f86f..0da5f97 100644
--- a/shortlog.h
+++ b/shortlog.h
@@ -21,7 +21,7 @@ struct shortlog {

 void shortlog_init(struct shortlog *log);

-void shortlog_add_commit(struct shortlog *log, struct commit *commit);
+void shortlog_add_commit(struct rev_info *rev, struct shortlog *log, struct commit *commit);

 void shortlog_output(struct shortlog *log);