Comment 7 for bug 503670

I have a similar view as Robert.

To elaborate more on my previous comment #3. IMO bzr should have a portable implementation (pure python) which searches the working tree by default and optionally searches history on all supported platforms. It may take some time for a feature of that size to mature so it can probably be created as a separate plugin and if that works well (standard grep options, history support, good performance etc.) it should probably be considered for folding into the core. The history support could possibly be done as a separate patch.