[PATCH] D57400: Add a .gitignore file to the root that ignores any files outside of the project directories.

[Peter Collingbourne via Phabricator via llvm-commits]

pcc reclaimed this revision.
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Herald added a subscriber: jdoerfert.

Reopening. I'm mildly inclined to push for this because:

1. I don't really see what problems this will cause, while there's evidence that it would have prevented a problem [1]
2. others seem to be in favour as well (D57429 <https://reviews.llvm.org/D57429>)
3. we always have the option of backing this out if we do discover a problem with it, just like any other patch

[1] http://lists.llvm.org/pipermail/llvm-dev/2019-February/130234.html


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