Re: Commit 4778c7326d726f50f6ac541322006d6b90795945

[David Kastrup]

"address@hidden" <address@hidden> writes:

> Le Dec 6, 2011 à 2:01 PM, David Kastrup a écrit :
>
>> "address@hidden" <address@hidden> writes:
>> 
>>> Hey all,
>>> 
>>> I believe that the variable `clone' needs to be unquoted in commit
>>> 4778c7326d726f50f6ac541322006d6b90795945 (it is part of a quasi-quoted
>>> list).  I haven't tested it thoroughly, but please give it a look and
>>> lemme know if this is indeed the case.
>> 
>> How about reporting the problem you are actually seeing?
>> 
>
> If one defines a music function incorrectly and then tries to use it, i.e. :
>
> foo =
> #(define-music-function (parser location)
> #{ a #})
>
> \foo
>
> One gets the following warning message:
>
> Parsing...
> foo.ly:4:1: error: GUILE signaled an error for the expression beginning here
> #
>  (define-music-function (parser location)
> Unbound variable: clone
> fatal error: failed files: "foo.ly"

Pushed a few patches to staging making this blow up sooner more reliably
with symptoms easier associated with #{ #} and music lists.

Also I like the output of

#(write '#{ this $is #(it!) #})

better than previously.

It's not the same as an error handtailored to the mistake, but that is
actually astonishingly hard to do.

-- 
David Kastrup