Re: How to use meld with 'svn diff'

[Grant Edwards <grante visi com>]

On 2008-04-14, Frederik Uppesen <f_uppesen yahoo com> wrote:

> 'svn diff' can be used to do a variety of comparisons across
> branches and revisions.
>
> But asking svn to use 'meld' in its config file (by setting
> 'diff-cmd') results in a lot of complaints from 'meld'!

The "diff-cmd" that is called by svn needs to accept a bunch of
command line options/arguements.  IIRC the two file names to
compare are args 5 and 6.  The rest of the command line is a
bunch of options that once-upon-a-time were required to get the
gnu diff utility to do what SVN wanted it to do.

Hard-wiring the external diff command interface to be that of
an old version of gnu diff seems like a big mistake to me, but
at least the interface is documented.

> What's the trick? I must be missing a helper script?

Yes.  The details are in the fine manual:

http://svnbook.red-bean.com/en/1.4/svn.advanced.externaldifftools.html

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