Re: [PATCH 0/2] Fix warnings on access of a remote with Windows paths

> Hi Hannes (& Junio, see below),
> 
> On Mon, 22 May 2017, Johannes Sixt wrote:
> 
>> Am 22.05.2017 um 13:59 schrieb Johannes Schindelin:
>>> On Sat, 20 May 2017, Johannes Sixt wrote:
>>>> This small series fixes these warnings on Windows:
>>>>
>>>> C:\Temp\gittest>git fetch C:\Temp\gittest
>>>> warning: unable to access '.git/remotes/C:\Temp\gittest': Invalid argument
>>>> warning: unable to access '.git/branches/C:\Temp\gittest': Invalid
>>>> warning: argument
>>>>   From C:\Temp\gittest
>>>>    * branch            HEAD       -> FETCH_HEAD
>>>>
>>>> The fix is in the second patch; the first patch is a
>>>> preparation that allows to write the fix in my preferred style.
>>>
>>> Thank you!
>>>
>>> Maybe you want to accompany these patches with a simple test case that
>>> uses e.g. ls-remote on $(pwd | tr / \\\\)?
>>
>> Actually, no, I don't want to. It would have to be protected by MINGW, and I
>> don't want to burden us (and here I mean Windows folks) with a check for a
>> cosmetic deficiency. (Shell scripts, slow forks, yadda, yadda...)
> 
> Actually, yes, I want to.
> 
> Yes, it would have to be protected by MINGW, and yes, it would put a
> burden on us, but also yes: it would put an even higher burden on me to
> check this manually before releasing Git for Windows, or even worse: this
> regression would be the kind of bug that triggers many bug reports,
> addressing which would take a lot more time than writing this test case
> and executing it as part of our test suite.

> 
> So here goes:
> 
> -- snipsnap --
> From: Johannes Schindelin <johannes.schindelin@gmx.de>
> Date: Tue, 23 May 2017 12:42:13 +0200
> Subject: [PATCH] mingw: verify that paths are not mistaken for remote nicknames
> 
> This added test case simply verifies that users will not be bothered
> with bogus complaints à la
> 
> 	warning: unable to access '.git/remotes/D:\repo': Invalid argument
> 
> when fetching from a Windows path (in this case, D:\repo).
> 
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ---
>   t/t5580-clone-push-unc.sh | 10 ++++++++--
>   1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/t/t5580-clone-push-unc.sh b/t/t5580-clone-push-unc.sh
> index b195f71ea98..93ce99ba3c6 100755
> --- a/t/t5580-clone-push-unc.sh
> +++ b/t/t5580-clone-push-unc.sh
> @@ -1,13 +1,19 @@
>   #!/bin/sh
>   
> -test_description='various UNC path tests (Windows-only)'
> +test_description='various Windows-only path tests'
>   . ./test-lib.sh
>   
>   if ! test_have_prereq MINGW; then
> -	skip_all='skipping UNC path tests, requires Windows'
> +	skip_all='skipping Windows-only path tests'
>   	test_done
>   fi
>   
> +test_expect_success 'remote nick cannot contain backslashes' '
> +	BACKSLASHED="$(pwd | tr / \\\\)" &&
> +	git ls-remote "$BACKSLASHED" >out 2>err &&
> +	! grep "unable to access" err
> +'
> +
>   UNCPATH="$(pwd)"
>   case "$UNCPATH" in
>   [A-Z]:*)
>