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Klaus Aehlig authored
We always supported underscores in tags since \w in pythons interpretation of regular expressions does include the underscore. While this might have happened by accident, there is no reason to change the implementation. The motivation for the restriction was to avoid accidents with wrong (manual) shell escaping; the underscore, however, has no special meaning to the shell. So just make the documentation say what we implemented. Signed-off-by: Klaus Aehlig <aehlig@google.com> Reviewed-by: Petr Pudlak <pudlak@google.com>
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