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Re: 2.19.x Point and click references

From: David Kastrup
Subject: Re: 2.19.x Point and click references
Date: Mon, 28 Apr 2014 08:04:23 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

Jay Anderson <address@hidden> writes:

> point_and_click_2.19.ly:
> =============================
> \version "2.19.5"
> makeScore =
> #(define-void-function (parser location) ()
>   (let ((score
>          #{
>            \score
>            {
>              \new Staff { \include "00.ily" }
>            }
>          #}))
>     (add-score parser score)))
> \makeScore
> =============================
> 00.ily:
> =============================
> \relative c' { c4 c c c | }
> =============================
> When compiling the above files the point-and-click links do not point
> to the '00.ily' file. Instead they all point to the final line of
> 'point_and_click_2.19.ly'. In 2.18 this worked correctly.

Without actually testing it, I consider this unlikely.  It would appear
to be <URL:http://code.google.com/p/lilypond/issues/detail?id=3153>,
namely changed in 2.17.13.  While it's conceivable that \include
handling has been changed independently, this does not really change the
rationale of the change, namely pointing out _which_ invocation of a
function is responsible for some input.  Which is particularly important
for trivially correct functions called hundreds of times.  You really
don't want to have point-and-click point to the function definition

> it's also worth noting that if you introduce an error to 00.ily the
> errors reported do use the correct filename and line number.

Yes, that's what one wants for debugging.

There is a somewhat funny way to change this behavior: just use an
argument name different from "location" for the location argument, and
#{...#} will not be able to pick it up for passing it to

David Kastrup

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