diff mbox series

[v4,2/2] format-patch: "--rfc=-(WIP)" appends to produce [PATCH (WIP)]

Message ID 20240423175234.170434-3-gitster@pobox.com (mailing list archive)
State Accepted
Commit ce36894509bac4c03fd524fc668b1e43d6e56ee1
Headers show
Series format-patch --rfc=WIP | expand

Commit Message

Junio C Hamano April 23, 2024, 5:52 p.m. UTC
In the previous step, the "--rfc" option of "format-patch" learned
to take an optional string value to prepend to the subject prefix,
so that --rfc=WIP can give "[WIP PATCH]".

There may be cases in which the extra string wants to come after the
subject prefix.  Extend the mechanism to allow "--rfc=-(WIP)" [*] to
signal that the extra string is to be appended instead of getting
prepended, resulting in "[PATCH (WIP)]".

In the documentation, discourage (ab)using "--rfc=-RFC" to say
"[PATCH RFC]" just to be different, when "[RFC PATCH]" is the norm.

[Footnote]

 * The syntax takes inspiration from Perl's open syntax that opens
   pipes "open fh, '|-', 'cmd'", where the dash signals "the other
   stuff comes here".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 Documentation/git-format-patch.txt | 6 ++++++
 builtin/log.c                      | 8 ++++++--
 t/t4014-format-patch.sh            | 9 +++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)

Comments

Phillip Wood April 24, 2024, 10:16 a.m. UTC | #1
Hi Junio

On 23/04/2024 18:52, Junio C Hamano wrote:
> In the previous step, the "--rfc" option of "format-patch" learned
> to take an optional string value to prepend to the subject prefix,
> so that --rfc=WIP can give "[WIP PATCH]".
> 
> There may be cases in which the extra string wants to come after the
> subject prefix.  Extend the mechanism to allow "--rfc=-(WIP)" [*] to
> signal that the extra string is to be appended instead of getting
> prepended, resulting in "[PATCH (WIP)]".
> 
> In the documentation, discourage (ab)using "--rfc=-RFC" to say
> "[PATCH RFC]" just to be different, when "[RFC PATCH]" is the norm.
> 
> [Footnote]
> 
>   * The syntax takes inspiration from Perl's open syntax that opens
>     pipes "open fh, '|-', 'cmd'", where the dash signals "the other
>     stuff comes here".

I'm not convinced this is a good idea as I'm not sure how adding "RFC" 
at the end of the subject prefix makes the world better than just having 
at the start of the prefix and I find using "-" to do that quite confusing.

Best Wishes

Phillip

> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
>   Documentation/git-format-patch.txt | 6 ++++++
>   builtin/log.c                      | 8 ++++++--
>   t/t4014-format-patch.sh            | 9 +++++++++
>   3 files changed, 21 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
> index e553810b1e..369af2c4a7 100644
> --- a/Documentation/git-format-patch.txt
> +++ b/Documentation/git-format-patch.txt
> @@ -247,6 +247,12 @@ RFC means "Request For Comments"; use this when sending
>   an experimental patch for discussion rather than application.
>   "--rfc=WIP" may also be a useful way to indicate that a patch
>   is not complete yet ("WIP" stands for "Work In Progress").
> ++
> +If the convention of the receiving community for a particular extra
> +string is to have it _after_ the subject prefix, the string _<rfc>_
> +can be prefixed with a dash ("`-`") to signal that the the rest of
> +the _<rfc>_ string should be appended to the subject prefix instead,
> +e.g., `--rfc='-(WIP)'` results in "PATCH (WIP)".
>   
>   -v <n>::
>   --reroll-count=<n>::
> diff --git a/builtin/log.c b/builtin/log.c
> index 97ca885b33..4750e480e6 100644
> --- a/builtin/log.c
> +++ b/builtin/log.c
> @@ -2065,8 +2065,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
>   	if (cover_from_description_arg)
>   		cover_from_description_mode = parse_cover_from_description(cover_from_description_arg);
>   
> -	if (rfc && rfc[0])
> -		strbuf_insertf(&sprefix, 0, "%s ", rfc);
> +	if (rfc && rfc[0]) {
> +		if (rfc[0] == '-')
> +			strbuf_addf(&sprefix, " %s", rfc + 1);
> +		else
> +			strbuf_insertf(&sprefix, 0, "%s ", rfc);
> +	}
>   
>   	if (reroll_count) {
>   		strbuf_addf(&sprefix, " v%s", reroll_count);
> diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
> index 645c4189f9..fcbde15b16 100755
> --- a/t/t4014-format-patch.sh
> +++ b/t/t4014-format-patch.sh
> @@ -1394,6 +1394,15 @@ test_expect_success '--rfc=WIP and --rfc=' '
>   	test_cmp expect-raw actual
>   '
>   
> +test_expect_success '--rfc=-(WIP) appends' '
> +	cat >expect <<-\EOF &&
> +	Subject: [PATCH (WIP) 1/1] header with . in it
> +	EOF
> +	git format-patch -n -1 --stdout --rfc="-(WIP)" >patch &&
> +	grep "^Subject:" patch >actual &&
> +	test_cmp expect actual
> +'
> +
>   test_expect_success '--rfc does not overwrite prefix' '
>   	cat >expect <<-\EOF &&
>   	Subject: [RFC PATCH foobar 1/1] header with . in it
Junio C Hamano April 24, 2024, 3:25 p.m. UTC | #2
Phillip Wood <phillip.wood123@gmail.com> writes:

> I'm not convinced this is a good idea as I'm not sure how adding "RFC"
> at the end of the subject prefix makes the world better than just
> having at the start of the prefix and I find using "-" to do that
> quite confusing.

I am not convinced it is a good idea, either.  "PATCH (WIP)" was the
best example I could come up with.  I am also a fan of "a list of
space separated labels or keywords" you mentioned, but *if* a
project convention somewhere is to have them before "PATCH", then it
is not entirely unreasonable to wish to have a way to prepend these
labels.

But I am fine to drop it for the sake of simplicity.  It would help
discourage users from trying to be "original" in a way that does not
make a material difference.  If a project comes with a concrete need
to prepend, the patch is always resurrectable from the list archive.

As to the syntax, I think "-" is a fairly good way to indicate
whether it goes to the front or back.  When told to "Combine '-RFC'
and 'PATCH'", I expect that most people would give 'PATCH-RFC' and
not '-RFC PATCH'.

Thanks.
Dragan Simic April 24, 2024, 3:58 p.m. UTC | #3
Hello Phillip,

On 2024-04-24 12:16, Phillip Wood wrote:
> On 23/04/2024 18:52, Junio C Hamano wrote:
>> In the previous step, the "--rfc" option of "format-patch" learned
>> to take an optional string value to prepend to the subject prefix,
>> so that --rfc=WIP can give "[WIP PATCH]".
>> 
>> There may be cases in which the extra string wants to come after the
>> subject prefix.  Extend the mechanism to allow "--rfc=-(WIP)" [*] to
>> signal that the extra string is to be appended instead of getting
>> prepended, resulting in "[PATCH (WIP)]".
>> 
>> In the documentation, discourage (ab)using "--rfc=-RFC" to say
>> "[PATCH RFC]" just to be different, when "[RFC PATCH]" is the norm.
>> 
>> [Footnote]
>> 
>>   * The syntax takes inspiration from Perl's open syntax that opens
>>     pipes "open fh, '|-', 'cmd'", where the dash signals "the other
>>     stuff comes here".
> 
> I'm not convinced this is a good idea as I'm not sure how adding "RFC"
> at the end of the subject prefix makes the world better than just
> having at the start of the prefix and I find using "-" to do that
> quite confusing.

Please, read my earlier responses [1][2] to see why does this
feature actually make the world a bit better.  To sum it up, just
as there's bit rot, there's also English grammar rot, which we
shouldn't embrace or promote.

[1] 
https://lore.kernel.org/git/f9aae9692493e4b722ce9f38de73c810@manjaro.org/
[2] 
https://lore.kernel.org/git/115acd1529d9529ef5bb095c074ad83d@manjaro.org/

>> Signed-off-by: Junio C Hamano <gitster@pobox.com>
>> ---
>>   Documentation/git-format-patch.txt | 6 ++++++
>>   builtin/log.c                      | 8 ++++++--
>>   t/t4014-format-patch.sh            | 9 +++++++++
>>   3 files changed, 21 insertions(+), 2 deletions(-)
>> 
>> diff --git a/Documentation/git-format-patch.txt 
>> b/Documentation/git-format-patch.txt
>> index e553810b1e..369af2c4a7 100644
>> --- a/Documentation/git-format-patch.txt
>> +++ b/Documentation/git-format-patch.txt
>> @@ -247,6 +247,12 @@ RFC means "Request For Comments"; use this when 
>> sending
>>   an experimental patch for discussion rather than application.
>>   "--rfc=WIP" may also be a useful way to indicate that a patch
>>   is not complete yet ("WIP" stands for "Work In Progress").
>> ++
>> +If the convention of the receiving community for a particular extra
>> +string is to have it _after_ the subject prefix, the string _<rfc>_
>> +can be prefixed with a dash ("`-`") to signal that the the rest of
>> +the _<rfc>_ string should be appended to the subject prefix instead,
>> +e.g., `--rfc='-(WIP)'` results in "PATCH (WIP)".
>>     -v <n>::
>>   --reroll-count=<n>::
>> diff --git a/builtin/log.c b/builtin/log.c
>> index 97ca885b33..4750e480e6 100644
>> --- a/builtin/log.c
>> +++ b/builtin/log.c
>> @@ -2065,8 +2065,12 @@ int cmd_format_patch(int argc, const char 
>> **argv, const char *prefix)
>>   	if (cover_from_description_arg)
>>   		cover_from_description_mode = 
>> parse_cover_from_description(cover_from_description_arg);
>>   -	if (rfc && rfc[0])
>> -		strbuf_insertf(&sprefix, 0, "%s ", rfc);
>> +	if (rfc && rfc[0]) {
>> +		if (rfc[0] == '-')
>> +			strbuf_addf(&sprefix, " %s", rfc + 1);
>> +		else
>> +			strbuf_insertf(&sprefix, 0, "%s ", rfc);
>> +	}
>>     	if (reroll_count) {
>>   		strbuf_addf(&sprefix, " v%s", reroll_count);
>> diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
>> index 645c4189f9..fcbde15b16 100755
>> --- a/t/t4014-format-patch.sh
>> +++ b/t/t4014-format-patch.sh
>> @@ -1394,6 +1394,15 @@ test_expect_success '--rfc=WIP and --rfc=' '
>>   	test_cmp expect-raw actual
>>   '
>>   +test_expect_success '--rfc=-(WIP) appends' '
>> +	cat >expect <<-\EOF &&
>> +	Subject: [PATCH (WIP) 1/1] header with . in it
>> +	EOF
>> +	git format-patch -n -1 --stdout --rfc="-(WIP)" >patch &&
>> +	grep "^Subject:" patch >actual &&
>> +	test_cmp expect actual
>> +'
>> +
>>   test_expect_success '--rfc does not overwrite prefix' '
>>   	cat >expect <<-\EOF &&
>>   	Subject: [RFC PATCH foobar 1/1] header with . in it
Dragan Simic April 24, 2024, 4:34 p.m. UTC | #4
Hello Junio,

On 2024-04-24 17:25, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
>> I'm not convinced this is a good idea as I'm not sure how adding "RFC"
>> at the end of the subject prefix makes the world better than just
>> having at the start of the prefix and I find using "-" to do that
>> quite confusing.
> 
> I am not convinced it is a good idea, either.  "PATCH (WIP)" was the
> best example I could come up with.  I am also a fan of "a list of
> space separated labels or keywords" you mentioned, but *if* a
> project convention somewhere is to have them before "PATCH", then it
> is not entirely unreasonable to wish to have a way to prepend these
> labels.
> 
> But I am fine to drop it for the sake of simplicity.  It would help
> discourage users from trying to be "original" in a way that does not
> make a material difference.  If a project comes with a concrete need
> to prepend, the patch is always resurrectable from the list archive.

Yes, it would help with discouraging the users from becoming
"inventive", but would also promote the rot of English grammar,
as I already tried to explain. [1][2]

I'm always for simplicity, unless it actually results in some
possibly negative effects.

[1] 
https://lore.kernel.org/git/f9aae9692493e4b722ce9f38de73c810@manjaro.org/
[2] 
https://lore.kernel.org/git/115acd1529d9529ef5bb095c074ad83d@manjaro.org/

> As to the syntax, I think "-" is a fairly good way to indicate
> whether it goes to the front or back.  When told to "Combine '-RFC'
> and 'PATCH'", I expect that most people would give 'PATCH-RFC' and
> not '-RFC PATCH'.

I find the syntax just fine.
diff mbox series

Patch

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index e553810b1e..369af2c4a7 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -247,6 +247,12 @@  RFC means "Request For Comments"; use this when sending
 an experimental patch for discussion rather than application.
 "--rfc=WIP" may also be a useful way to indicate that a patch
 is not complete yet ("WIP" stands for "Work In Progress").
++
+If the convention of the receiving community for a particular extra
+string is to have it _after_ the subject prefix, the string _<rfc>_
+can be prefixed with a dash ("`-`") to signal that the the rest of
+the _<rfc>_ string should be appended to the subject prefix instead,
+e.g., `--rfc='-(WIP)'` results in "PATCH (WIP)".
 
 -v <n>::
 --reroll-count=<n>::
diff --git a/builtin/log.c b/builtin/log.c
index 97ca885b33..4750e480e6 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -2065,8 +2065,12 @@  int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	if (cover_from_description_arg)
 		cover_from_description_mode = parse_cover_from_description(cover_from_description_arg);
 
-	if (rfc && rfc[0])
-		strbuf_insertf(&sprefix, 0, "%s ", rfc);
+	if (rfc && rfc[0]) {
+		if (rfc[0] == '-')
+			strbuf_addf(&sprefix, " %s", rfc + 1);
+		else
+			strbuf_insertf(&sprefix, 0, "%s ", rfc);
+	}
 
 	if (reroll_count) {
 		strbuf_addf(&sprefix, " v%s", reroll_count);
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 645c4189f9..fcbde15b16 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -1394,6 +1394,15 @@  test_expect_success '--rfc=WIP and --rfc=' '
 	test_cmp expect-raw actual
 '
 
+test_expect_success '--rfc=-(WIP) appends' '
+	cat >expect <<-\EOF &&
+	Subject: [PATCH (WIP) 1/1] header with . in it
+	EOF
+	git format-patch -n -1 --stdout --rfc="-(WIP)" >patch &&
+	grep "^Subject:" patch >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success '--rfc does not overwrite prefix' '
 	cat >expect <<-\EOF &&
 	Subject: [RFC PATCH foobar 1/1] header with . in it