id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
559864146,MDU6SXNzdWU1NTk4NjQxNDY=,3750,isort pre-commit hook does not skip text files,10194086,closed,0,,,4,2020-02-04T17:18:31Z,2020-05-06T01:50:29Z,2020-03-28T20:58:15Z,MEMBER,,,,"#### MCVE Code Sample

Add arbitrary change to the file `doc/pandas.rst`

``` bash
git add doc/pandas.rst
git commit -m ""test""
```

The pre-commit hook will fail.

#### Expected Output
the pre-commit hook to pass

#### Problem Description

running `isort -rc doc/*` will change the following files:
``` bash
        modified:   contributing.rst
        modified:   howdoi.rst
        modified:   internals.rst
        modified:   io.rst
        modified:   pandas.rst
        modified:   quick-overview.rst
```
unfortunately it does not behave properly and deletes/ changes arbitrary lines. Can the pre-commit hook be told to only run on *.py files? On the command line this would be `isort -rc *.py`












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