view tests/readlink.py @ 17173:c621f84dbb35

obsolete: compute extinct changesets

`extinct` changesets are obsolete changesets with obsolete descendants only. They
are of no interest anymore and can be:

- exclude from exchange
- hidden to the user in most situation
- safely garbage collected

This changeset just allows mercurial to detect them.

The implementation is a bit naive, as for unstable changesets. We better use a
simple revset query and a cache, but simple version comes first.

#!/usr/bin/env python

import errno, os, sys

for f in sys.argv[1:]:
    try:
        print f, '->', os.readlink(f)
    except OSError, err:
        if err.errno != errno.EINVAL:
            raise
        print f, 'not a symlink'

sys.exit(0)