OXS throws an xargs error when using the pre-commit hook

[Marto32]

When trying to commit on OSX (after properly installing the pre-commit hooks and .gitlint.yaml file), I receive the following error:

xargs: illegal option -- -

I believe this is caused by this line as OSX xargs don't seem to support --null and --no-run-if-empty. (Also seen in the hg file).

I'd like to note that the actual git lint command works fine. I seem to only get this when trying to commit.

[sk-]

Hi Michael, thanks for reporting this.

In OSX the --null option is called -0 which also works in GNU versions, so we can easily replace that part. However the --no-run-if-empty does not exist, but could be simulated by assigning the result to a variable and checking if the variable is not empty.

Feel free to send a PR.

[Marto32]

Sent - #89