RFC: handling of symlinks in the UI

[Aaron Bentley]

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Robert Collins wrote:
> Currently we have a cluster of bgs related to symlink following. E.g.
> https://bugs.edge.launchpad.net/bzr/+bug/183831

> I'd like to try and figure out a good consistent answer, or at least a
> set of rules so that we can fix these.

How about: don't follow symlinks that are at the end of the path spec,
but follow other symlinks.  This allows path/symlink/. to be traversed,
while path/symlink is not.

Aaron
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