threads / discuss / 19918

names using git config

Subject: names using git config

## tl;dr

6 messages between Jun 24, 2009 and Jun 25, 2009.

replies: 5people: 3as markdown or json

Ryan· Jun 24, 2009, 16:58 UTC · lore

How do i select a Name which ends in a dot something like Ryan W. Philips in Git using git config user.name

Because when i do that "Ryan W. Philips" It just comes and Ryan W Philips in git log when i add a commit.

Thanks, Ryan

Matthieu Moy· Jun 24, 2009, 17:06 UTC · re: Ryan · lore

Re: names using git config

Ryan <ryanphilips19@googlemail.com> writes:
Show 5 quoted lines
> How do i select a Name which ends in a dot something like Ryan W.
> Philips in Git using  git config user.name
>
> Because when i do that "Ryan W. Philips" It just comes and Ryan W
> Philips in git log when i add a commit.
Can't reproduce here:
$ mkdir git
$ cd git/
$ git init
Initialized empty Git repository in /tmp/git/.git/
$ git config user.name 'Matthieu M. Moy'
$ cat .git/config 
[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[user]
        name = Matthieu M. Moy
$ touch foo; git add foo
$ git commit -m "foo"
[master (root-commit) 6814174] foo
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foo
$ git log
commit 681417491423260ad13c3fb59c28fc96a68bf4f9
Author: Matthieu M. Moy <Matthieu.Moy@imag.fr>
Date:   Wed Jun 24 19:05:43 2009 +0200
    foo
$ git version
git version 1.6.3.rc1.35.gabb3a
$ 
-- 
Matthieu
Ryan· Jun 25, 2009, 04:46 UTC · re: Matthieu Moy · lore

Re: names using git config

Hi,
  Thank you for your response.
1) git config user.name 'Matthieu M. Moy' Works
2) git config user.name 'Matthieu M.'  does not
Probably, Name cannot end in a '.' <dot>. in git config user.name

Regards, Ryan W.

On Wed, Jun 24, 2009 at 10:36 PM, Matthieu Moy<Matthieu.Moy@imag.fr> wrote:
Show 41 quoted lines
> Ryan <ryanphilips19@googlemail.com> writes:
>
>> How do i select a Name which ends in a dot something like Ryan W.
>> Philips in Git using  git config user.name
>>
>> Because when i do that "Ryan W. Philips" It just comes and Ryan W
>> Philips in git log when i add a commit.
>
> Can't reproduce here:
>
> $ mkdir git
> $ cd git/
> $ git init
> Initialized empty Git repository in /tmp/git/.git/
> $ git config user.name 'Matthieu M. Moy'
> $ cat .git/config
> [core]
>        repositoryformatversion = 0
>        filemode = true
>        bare = false
>        logallrefupdates = true
> [user]
>        name = Matthieu M. Moy
> $ touch foo; git add foo
> $ git commit -m "foo"
> [master (root-commit) 6814174] foo
>  0 files changed, 0 insertions(+), 0 deletions(-)
>  create mode 100644 foo
> $ git log
> commit 681417491423260ad13c3fb59c28fc96a68bf4f9
> Author: Matthieu M. Moy <Matthieu.Moy@imag.fr>
> Date:   Wed Jun 24 19:05:43 2009 +0200
>
>    foo
> $ git version
> git version 1.6.3.rc1.35.gabb3a
> $
>
> --
> Matthieu
>
Junio C Hamano· Jun 25, 2009, 05:11 UTC · re: Ryan · lore

Re: names using git config

Ryan <ryanphilips19@googlemail.com> writes:
Show 7 quoted lines
> Hi,
>   Thank you for your response.
>
> 1) git config user.name 'Matthieu M. Moy' Works
> 2) git config user.name 'Matthieu M.'  does not
>
> Name cannot end in a '.' <dot>. in git config user.name

That is correct, but I think we are a bit too strict in sanitizing names. The code is ident.c::copy() whose intent was to sanitize useless runs of commas we slurp from GECOS field, but the sanitization is done also for anything specified by the end user.

This patch loosens it, but I think it goes too far, in that it does not stop you from feeding total nonsense with GIT_AUTHOR_NAME environment and user.name configuration.

 ident.c                |    5 ++---
 t/t1300-repo-config.sh |   12 ++++++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/ident.c b/ident.c
index 99f1c85..07ec81d 100644
--- a/ident.c
+++ b/ident.c
@@ -212,8 +212,7 @@ const char *fmt_ident(const char *name, const char *email,
 		pw = getpwuid(getuid());
 		if (!pw)
 			die("You don't exist. Go away!");
-		strlcpy(git_default_name, pw->pw_name,
-			sizeof(git_default_name));
+		copy(git_default_name, sizeof(git_default_name), 0, pw->pw_name);
 		name = git_default_name;
 	}
 
@@ -221,7 +220,7 @@ const char *fmt_ident(const char *name, const char *email,
 	if (!name_addr_only && date_str)
 		parse_date(date_str, date, sizeof(date));
 
-	i = copy(buffer, sizeof(buffer), 0, name);
+	i = add_raw(buffer, sizeof(buffer), 0, name);
 	i = add_raw(buffer, sizeof(buffer), i, " <");
 	i = copy(buffer, sizeof(buffer), i, email);
 	if (!name_addr_only) {
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 43ea283..c1a913e 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -758,4 +758,16 @@ test_expect_success 'check split_cmdline return' "
 	test_must_fail git merge master
 	"
 
+test_expect_success 'name ending in dot' '
+	foobar="Foo Bar."
+	git config user.name "$foobar" &&
+	git config user.email "foo.bar@example.com" &&
+	test "$(git config user.name)" = "$foobar" &&
+	(
+		unset GIT_AUTHOR_NAME
+		ident=$(git var GIT_AUTHOR_IDENT | sed -e "s/ *<.*//") &&
+		test "$ident" = "$foobar"
+	)
+'
+
 test_done
Ryan· Jun 25, 2009, 10:09 UTC · re: Junio C Hamano · lore

Re: names using git config

On Thu, Jun 25, 2009 at 10:41 AM, Junio C Hamano<gitster@pobox.com> wrote:
Show 15 quoted lines
> Ryan <ryanphilips19@googlemail.com> writes:
>
>> Hi,
>>   Thank you for your response.
>>
>> 1) git config user.name 'Matthieu M. Moy' Works
>> 2) git config user.name 'Matthieu M.'  does not
>>
>> Name cannot end in a '.' <dot>. in git config user.name
>
> That is correct, but I think we are a bit too strict in sanitizing names.
> The code is ident.c::copy() whose intent was to sanitize useless runs of
> commas we slurp from GECOS field, but the sanitization is done also for
> anything specified by the end user.
>

What are you suggesting me to do? Apply the below patch. I may want to submit patches to the linux kernel. Is this okay? Or will this (below patch) on machine will later at some point of time cause trouble to people applying the patches.

Does git am or git apply check if name ends in a "." and do something?
Thank you,
Ryan W.
Show 53 quoted lines
> This patch loosens it, but I think it goes too far, in that it does not
> stop you from feeding total nonsense with GIT_AUTHOR_NAME environment and
> user.name configuration.
>
>  ident.c                |    5 ++---
>  t/t1300-repo-config.sh |   12 ++++++++++++
>  2 files changed, 14 insertions(+), 3 deletions(-)
>
> diff --git a/ident.c b/ident.c
> index 99f1c85..07ec81d 100644
> --- a/ident.c
> +++ b/ident.c
> @@ -212,8 +212,7 @@ const char *fmt_ident(const char *name, const char *email,
>                pw = getpwuid(getuid());
>                if (!pw)
>                        die("You don't exist. Go away!");
> -               strlcpy(git_default_name, pw->pw_name,
> -                       sizeof(git_default_name));
> +               copy(git_default_name, sizeof(git_default_name), 0, pw->pw_name);
>                name = git_default_name;
>        }
>
> @@ -221,7 +220,7 @@ const char *fmt_ident(const char *name, const char *email,
>        if (!name_addr_only && date_str)
>                parse_date(date_str, date, sizeof(date));
>
> -       i = copy(buffer, sizeof(buffer), 0, name);
> +       i = add_raw(buffer, sizeof(buffer), 0, name);
>        i = add_raw(buffer, sizeof(buffer), i, " <");
>        i = copy(buffer, sizeof(buffer), i, email);
>        if (!name_addr_only) {
> diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
> index 43ea283..c1a913e 100755
> --- a/t/t1300-repo-config.sh
> +++ b/t/t1300-repo-config.sh
> @@ -758,4 +758,16 @@ test_expect_success 'check split_cmdline return' "
>        test_must_fail git merge master
>        "
>
> +test_expect_success 'name ending in dot' '
> +       foobar="Foo Bar."
> +       git config user.name "$foobar" &&
> +       git config user.email "foo.bar@example.com" &&
> +       test "$(git config user.name)" = "$foobar" &&
> +       (
> +               unset GIT_AUTHOR_NAME
> +               ident=$(git var GIT_AUTHOR_IDENT | sed -e "s/ *<.*//") &&
> +               test "$ident" = "$foobar"
> +       )
> +'
> +
>  test_done
>
Junio C Hamano· Jun 25, 2009, 18:46 UTC · re: Ryan · lore

Re: names using git config

Ryan <ryanphilips19@googlemail.com> writes:
Show 18 quoted lines
> On Thu, Jun 25, 2009 at 10:41 AM, Junio C Hamano<gitster@pobox.com> wrote:
>> Ryan <ryanphilips19@googlemail.com> writes:
>>
>>> Hi,
>>>   Thank you for your response.
>>>
>>> 1) git config user.name 'Matthieu M. Moy' Works
>>> 2) git config user.name 'Matthieu M.'  does not
>>>
>>> Name cannot end in a '.' <dot>. in git config user.name
>>
>> That is correct, but I think we are a bit too strict in sanitizing names.
>> The code is ident.c::copy() whose intent was to sanitize useless runs of
>> commas we slurp from GECOS field, but the sanitization is done also for
>> anything specified by the end user.
>
> What are you suggesting me to do? Apply the below patch.
> I may want to submit patches to the linux kernel. Is this okay?

Sorry if I was unclear. I wasn't suggesting anything in particular to you. The only concrete thing addressed to you in my message was the answer "That is correct" and all the remainder of my message, including the patch, was primarily meant as illustration for other git developers to think about.

I do not think this matters that much in practice, as long as you are submitting patches via e-mail, the usual method for leaf-level developers. The maintainers apply your patches under the name your e-mail's From: header carries, not your user.name.

If you apply the patch to your copy of git, your "git log" output will start showing otherwise forbidden names that have leading or trailing dots (and other letters like semicolons) because your modified copy of "git commit" will allow them, and I think "git commit -s" also will pass the trailing dots intact, but that is about the extent of the damage. Without applying the patch, you will perhaps see your "Signed-off-by: Foo M <foo.m@example.com>" line without the trailing dots after the name, but that is something you can easily modify in your MUA when you are sending the e-mail out.

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