Comment 6 for bug 503670

I should expand on why I say that. git grep is a vastly different beast to the plugin we have in bzr; it can look in arbitrary revisions, in the basis tree, or the working tree.

Merging something more roughly equivalent to it would make a great deal of sense. I have the feeling though that most things that are plugins are plugins because their authors feel that they are not (appropriate|good enough) to merge to core: so we'll get disappointing results fixing 'you do not have a FOO' by taking the simple route of 'just merge to trunk'.