Subject: Re: [PATCHv3 2/2] git submodule: Fix adding of submodules at paths with ./, .. and //

From: Michael J Gruber <[email-masked]>
Date: Tue, 03 Mar 2009 15:09:45 +0100

Johannes Sixt venit, vidit, dixit 03.03.2009 14:08:
> Michael J Gruber schrieb:
>> +	# normalize path:
>> +	# multiple //; leading ./; /./; /../; trailing /
>> +	path=$(printf '%s/\n' "$path" |
>> +		sed -e '
>> +			s|//*|/|g
>> +			s|^\(\./\)*||
>> +			s|/\./|/|g
>> +			:start
>> +			s|\([^/]*\)/\.\./||g
> 
> Sorry to say: not yet. This turns "a/b/c/d/../../../d" into "a/b/c/d"
> instead of "a/d". Drop the 'g'.

Shoot, I thought I had a complete test case...
Thanks for spotting.

> Once this is fixed, I have to ask what should happen with path names like
> "../a/b", "../../a/b"? Should there be a warning or error?

That triggers the error message when trying to git add a submodule which
is not within the current wc. Same before and after the patch, and I
think that's how it should be.

> Other than that, this expression works on AIX 4.3.3! Note in particular
> that '\n' in the printf format string is essential!

I learned that from you ;)

Michael

>> +			tstart
>> +			s|/*$||
>> +		')
> -- Hannes