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Re: build-lexical-var vs. -Wunused-variable

From: Andy Wingo
Subject: Re: build-lexical-var vs. -Wunused-variable
Date: Sun, 19 Feb 2012 22:08:26 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)

On Fri 17 Feb 2012 12:00, address@hidden (Ludovic Courtès) writes:

> Commit f9685f437312ea790981373ddc375b2a26ba9c4f changes
> ‘build-lexical-var’ like this:
>      (define-syntax-rule (build-lexical-var src id)
> -      (gensym (string-append (symbol->string id) " ")))
> +      (gensym (string-append (symbol->string id) "-")))
> This breaks a heuristic used in the ‘unused-variable’ pass, which is
> that identifiers containing white space are likely introduced by a macro
> and can be ignored in unused-variable reports (see ‘gensym?’ in
> ‘tree-il/analyze.scm’).
> OK to change it back?

How about we use `$' instead?  I understand that's how Chez does it.
I'd really rather something that is printable without the #{#} syntax.


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