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Fix types bug by using FrozenSet#intersection

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Fixes a bug where files are not being recognized based on their `types`
using configuration file.

In the case of using `types: ['bash', 'sh', 'shell']` in
pre-commit-config, those filetypes will not be found, resulting in "no
files found" being reported with pre-commit. This persists even when
using --all-files flag.

Intersection produces predictable results in Python 2.7 and 3.x.
This commit is contained in:
Zander Hill 2018-05-03 12:08:34 +01:00
parent 29d66f470d
commit ff66c20c6e
2 changed files with 7 additions and 4 deletions
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6
pre_commit/commands/run.py
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@ -53,10 +53,12 @@ def _filter_by_types(filenames,
exclude_types,
get_tags=tags_from_path):
types, exclude_types = frozenset(types), frozenset(exclude_types)
valid_types = types - exclude_types
ret = []
for filename in filenames:
tags = get_tags(filename)
if tags >= types and not tags & exclude_types:
tags = frozenset(get_tags(filename))
if len(valid_types.intersection(tags)) > 0:
ret.append(filename)
return tuple(ret)