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Re: Correct line/column numbers in byte compiler messages [Was: GNU is l


From: Stefan Monnier
Subject: Re: Correct line/column numbers in byte compiler messages [Was: GNU is looking for Google Summer of Code Projects]
Date: Thu, 19 Mar 2020 18:09:50 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

> I think fat-cons cells are cheap to implement (with (hopefully) no
> performance impact when not used or weird semantic artifacts like the
> fat-symbol approach you tried) and can work 99.9% right in the long term
> with an incremental way to get there.

Reminds me that another project could be to provide something like
Scheme's `syntax-rules` or `syntax-case`.  These could be attractive on
their own while also making it easier to correctly propagate source-level
line-number information.


        Stefan




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