Switch template instructions

[fgallaire]

The form is:

{'case', SwitchVariable :: atom(), Values :: list(), Instructions :: list() | tuple()}.

This completes #138 "Support conditional template instructions".

[ghost]

cc @nox

[jaredmorrow]

Can we get an example and a test added for this feature?

[fgallaire]

Hello,

I developed this feature because it was useful to me for that project:
https://github.com/fgallaire/colt-templates

As the "conditional template instruction" doesn't have test, I don't know exactly what to do.

[ghost]

What's the status?

[fgallaire]

Few lines of code for a (for some people) useful option, what is the problem ?

[tsloughter]

Just trying to clean up and sort of start fresh. Closed everything that was opened before March of this year.

But, this looks fine. I think I'll reopen it and merge in.

[fgallaire]

Thanks a lot @tsloughter