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prune: fix IndexError

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if giving --prefix resulted in an empty archives_checkpoints list, it crashed with an IndexError.
This commit is contained in:
Thomas Waldmann 2016-05-07 21:03:31 +02:00
parent 18263f6257
commit a44e131661
1 changed files with 2 additions and 3 deletions
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5
borg/archiver.py
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@ -789,9 +789,8 @@ def do_prune(self, args, repository, manifest, key):
is_checkpoint = re.compile(r'\.checkpoint(\.\d+)?$').search
checkpoints = [arch for arch in archives_checkpoints if is_checkpoint(arch.name)]
# keep the latest checkpoint, if there is no later non-checkpoint archive
latest_checkpoint = checkpoints[0] if checkpoints else None
if archives_checkpoints[0] is latest_checkpoint:
keep_checkpoints = [latest_checkpoint, ]
if archives_checkpoints and checkpoints and archives_checkpoints[0] is checkpoints[0]:
keep_checkpoints = checkpoints[:1]
else:
keep_checkpoints = []
checkpoints = set(checkpoints)