request for svnpatch

Hi,

I've checked out the svnpatch-diff branch some time ago to find out what
new API's are available. I've mentioned this before, I'd like to have
additional API's available:

currently, the only API available is svn_client_patch().
I would need APIs to:
* list all affected files/folders in a patchfile:
 - affected file path
 - maybe size of the patch part for that file
 - whether content or properties are affected
 - new name/path in case of a rename
* ability to apply part of the patchfile, affecting only one of the
possible paths

without these APIs, it won't be possible to get a preview before
actually applying the patch.

the svn client could also use these:

svn list --svnpatch patchfile
file1 : modified
file3 : renamed to file3_new
file2 : moved to file4
file4 : added

or something like that. And then if the user doesn't want to apply the
full patchfile but only parts of it:

svn apply --svnpatch patchfile file1
would only apply the modifications for file1.

Does this make sense?

Stefan

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