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Re: Why should build phases not return unspecified values?


From: Arun Isaac
Subject: Re: Why should build phases not return unspecified values?
Date: Sun, 17 Dec 2017 13:52:22 +0530

Alex Vong <address@hidden> writes:

> I think the problem is that when the scheme standard says "the returned
> value is unspecified", it means anything can be returned. In this case,
> guile choose to return an unspecified value to avoid returning an
> arbitary value.
>
> I think the answer written by soegaard in [0] explains it pretty well.
>
> [0]: 
> https://stackoverflow.com/questions/28910911/detecting-unspecified-in-scheme-list

This is new to me. But, since we only use the Guile implementation, I
think we should be ok with phases returning #<unspecified>.



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