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bug#14422: 24.3; Eager Macro Expansion


From: Achim Gratz
Subject: bug#14422: 24.3; Eager Macro Expansion
Date: Sun, 26 May 2013 21:57:54 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

Stefan Monnier writes:
> The defvar is only executed at run time (although it does have an
> effect at compile time, which is to tell the compiler that the variable
> will exist at run time).
>
> So using `ll' during the macro expansion is wrong.

That may well be a bug in the original code, although of course the
defvar is in a different file that has been loaded before the test
definition would expand the macro, so the expectation is that the symbol
should exist and have nil value when trying to run the tests.

> If you want `ll' to defined earlier, you can wrap it in
> `eval-and-compile' (tho it's better not to abuse it).  I can't tell what
> solution I'd recommend in your case, since your distilled test case is
> "too distilled" to understand what it's trying to do.

I'll have to check again how things were supposed to have been
initialized in Org, but the assumption that the (no longer existing)
macro definitions made was clearly that the stand-in for the ll symbol
was pre-existing at macro expansion time.  I'll try to re-create the
test case to match that behaviour and come back to you.


Regards,
Achim.
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