Re: How to correctly use ly:warning-located?

[David Kastrup]

Simon Albrecht <address@hidden> writes:

> Hello,
>
> the doc string for ly:warning-located says
>
> ‘Function: ly:warning-located location str rest
> A Scheme callable function to issue the warning str at the specified
> location in an input file. The message is formatted with format and
> rest.’
>
> However, with this example
>
> %%%%%%%%%%%
> \version "2.19.36"
>
> m =
> #(define-music-function ()()
>    (ly:warning-located *location* "Here, \\m should be replaced with
> \\melisma.")
>    #{ \melisma #})
>
> <<
>   {
>     c'1\m d\melismaEnd
>   }
>   \addlyrics { test test }
>>>
> %%%%%%%%
>
> I get
>
> document.ly:5:4: Wrong type argument in position 1 (expecting string):
> #<procedure *location* ()>
>
> What is the correct way?

*location* is a procedure (used for accessing the fluid %location local
to the guile module), not a location.  So call it.

Of course, you can just pipe

m =
#(define-music-function (parser location)()
   (ly:warning-located location "Replace me")
   #{ \melisma #})

through

convert-ly -f 2.19.20 -t 2.19.30 -

and see what comes out.


I get

convert-ly (GNU LilyPond) 2.19.32

convert-ly: Processing `'... 
Applying conversion: 2.19.22, 2.19.24, 2.19.28, 2.19.29


\version "2.19.29"
m =
#(define-music-function ()()
   (ly:warning-located (*location*) "Replace me")
   #{ \melisma #})



-- 
David Kastrup