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Allow enable.sh to work with zsh #38
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This PR is to address #28 . I'm inexperienced with shell scripts so be very skeptical of my PR! But I tried my best.
I changed the single brackets to double brackets so it works with
zsh.If the script detects that this is being sourced from
zsh, we use${(%):-%x}instead of$BASH_SOURCE(stolen from here: https://stackoverflow.com/a/28336473)I did some refactoring to remove some
exit 1. This is because, when being sourced, this script would use to print the error message and then exit immediately so the user would have no idea what went wrong!