Re: [PATCH] git-svn: don't escape tilde ('~') for http(s) URLs

[Junio C Hamano <gitster@pobox.com>]

Eric Wong <normalperson@yhbt.net> writes:

> Junio C Hamano <gitster@pobox.com> wrote:
>
> Help with looking at what SVN does and writing testcases would
> definitely be appreciated on this matter.  Or perhaps this can be done
> at GitTogether :)

I'm not sure it would be a good use of time at GitTogether to do something
whose spec is pretty much self-evident (essentially for this one it boils
down to "define what are the 'funny' bytes, and list the protocols
supported by svn, and come up with paths with funny bytes in it and 
see what libsvn-perl gives to the underlying svn library, and what the svn
library does over the wire").  Ongoiong "fix start-up sequence around
worktree area" might be a better fit; I dunno.

>> The patch may make a path with '~' work, but it (neither in the patch text
>> nor in the commit log message) does not have much to give readers enough
>> confidence that the code after the patch is the _final_ one, as opposed to
>> being just a band-aid for a single symptom that happened to have been
>> discovered this time.
>
> This is definitely a band-aid fix until I or somebody else takes the
> time to figure out:
>
>  1. exactly which characters need to be escaped
>  2. for which protocols those characters need to be escaped
>  3. which part(s) of the URI they need to be escaped for
>     (repository root vs SVN path)
>  4. which versions of SVN needs more (or less) escaping rules
>
> (I vote for somebody else, especially for #4 :)

Item 3. above disturbs me.  Do you mean that in:

    https://sucs.org/~welshbyte/svn/backuptool/trunk/foo~bar.txt

the two tildes might have to be sent to libsvn-perl differently?

Even if that is the case, I am inclined suggest taking the patch in the
meantime as an interim workaround, with the understanding that we know the
patch improves the situation for the tilde before welshbyte and even
though we do not know if the patch regresses for the latter one between
foo and bar, it would be much rarer to have tilde in such places.

Care to come up with an updated log message?