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Re: 'svn diff' vs 'svnlook diff'

From: Johan Corveleyn <jcorvel_at_gmail.com>
Date: Mon, 19 Nov 2012 23:45:59 +0100

On Mon, Nov 19, 2012 at 2:47 PM, Julian Foad <julianfoad_at_btopenworld.com> wrote:
> Johan Corveleyn wrote:
>
>> Daniel Shahaf wrote:
>>> Johan Corveleyn wrote:
>>>> I currently have a patch sitting here for adding
>>>> --diff-cmd to 'svnlook diff',
>>>
>>> I wonder what's the minimal change we could make to the cmdline
>>> client such that it can operate on transactions (and thus void
>>> the need to reimplement every svn proplist/diff/cat/info switch
>>> in svnlook). (Read-only, at least initially.)
>>>
>>> Is this something Julian's tree-read-api branch would address?
>
> Yes my tree-read-api work would make this sort of thing easier.
>
>>> Maybe we need to implement svn_ra_local_txn (like ra_local, but
>>> with HEAD being a transaction instead of a revision)? Other ideas?
>
> Move the
> core tree-diffing functionality down a layer from libsvn_client into
> libsvn_diff. Let 'svn' pass some kinds of 'tree description' inputs to it (from the WC and RA interfaces) and let 'svnlook' pass other kinds of 'tree description' inputs (revisions and txns, from the repos layer).
>

Am I right in thinking that this is something that will probably take
some time to complete (i.e. not for 1.8)?

I'm just wondering whether I should commit my patch for adding
--diff-cmd to 'svnlook diff'. If you (or anyone else) intend to
"merge" both diff drivers soonish, it doesn't make much sense to work
specifically on --diff-cmd.

>> I'd like to note that the output of 'svnlook diff' is slightly
>> different from 'svn diff', and I'd like to preserve that different
>> behavior (or at least preserve the svnlook behavior here). IMO the
>> output of 'svnlook diff' is better suited for post-commit emails.
>
> Ugh. Most of these differences are (IMO) unwanted. I basically agree with your comments below about which ones are better.
>

Agreed. Would be nice indeed if both implementations could converge,
and take on the best format.

-- 
Johan
Received on 2012-11-19 23:46:52 CET

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