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Re: [Chicken-janitors] #944: Macro-renamed definitions in begin bodies d
From: |
Chicken Trac |
Subject: |
Re: [Chicken-janitors] #944: Macro-renamed definitions in begin bodies don't get seen by later forms (but only in modules) |
Date: |
Thu, 01 Nov 2012 09:05:18 -0000 |
#944: Macro-renamed definitions in begin bodies don't get seen by later forms
(but only in modules)
-----------------------+----------------------------------------------------
Reporter: sjamaan | Owner: sjamaan
Type: defect | Status: new
Priority: major | Milestone: 4.9.0
Component: expander | Version: 4.8.x
Resolution: | Keywords: expander, macros, hygiene, modules
-----------------------+----------------------------------------------------
Comment(by megane):
Replying to [comment:9 sjamaan]:
> R5RS says: "Note that a define at top level may or may not introduce a
binding; see section 5.2"
I think it says there that it should create a binding if there doesn't
exist one already.
http://www.schemers.org/Documents/Standards/R5RS/HTML/r5rs-Z-H-2.html#%_toc_%_sec_5.2.1
So in the syntax-rules case it should create a binding because bar was not
an argument to the macro and syntax-rules is supposed to be hygienic.
AFAUI the original example works correctly at the toplevel, but not in
modules, and the `syntax-rules` case works in modules, but not at the
toplevel.
--
Ticket URL: <http://bugs.call-cc.org/ticket/944#comment:12>
Chicken Scheme <http://www.call-with-current-continuation.org/>
Chicken Scheme is a compiler for the Scheme programming language.
- Re: [Chicken-janitors] #944: Macro-renamed definitions in begin bodies don't get seen by later forms (but only in modules),
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