Return from user prompt without requiring Enter

[inkarkat]

Supplying the user confirmation via "yes".

Before submitting a pull request, please make sure the following is done:

• [X] Fork the repository and create your branch from master.
• [X] If you've added code that should be tested, add tests!
• [X] Ensure the test suite passes.
• [X] Format your code with ShellCheck.
• [X] Include a human-readable description of what the pull request is trying to accomplish.
• [ ] Steps for the reviewer(s) on how they can manually QA the changes.
• [X] Have a fixes #XX reference to the issue that this pull request fixes.

This is an extended alternative implementation of #152 with added refactoring and test coverage.

[inkarkat]

Ah, bummer. That's what I meant when I commented It would be nice if someone could verify that this also works on MacOS; that one's causing compatibility problems most often.

The Bash on MacOS (looks like it's Bash 3.2.57(1)-release), doesn't support read -N yet :-( This was only added in Bash 4.1.

[karbassi]

The Bash on MacOS (looks like it's Bash 3.2.57(1)-release), doesn't support read -N yet :-( This was only added in Bash 4.1.

Welcome to macOS land! I can't speak for others, but first thing I do is upgrade the default apps (bash, zsh, gnu*, etc)