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bug#8712: 24.0.50; getting the "Forgot to expand macro XXXX" error - pro
bug#8712: 24.0.50; getting the "Forgot to expand macro XXXX" error - problem? solution?
Sun, 22 May 2011 22:36:34 -0300
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)
> I do have a question about the follownig warning, however (which I have not
> seen/noticed before):
> (lambda (opt) ...) quoted with ' rather than with #'
> That presumably comes from a defmacro that has, in effect, this:
> ` ... (let* (... (something (lambda (opt)...))))
This is because you pass (lambda (opt) ...) as `function' argument
to a macro that then splices it with
`(.... ',function ....)
so the expanded code contains '(lambda (opt) ...).
Splice it with #', instead.
> That is, an unquoted lambda inside a backquote. The backquote expands
> to (quote (lambda...)) no doubt.
No, backquote does not know you're building code, so it can't freely
decide to add `quote' symbols as it sees fit.