Re: [Lilypond-auto] Issue 4472 in lilypond: \mark will accept arbitrary types for its argument and ignore them

[lilypond]

Updates:
        Summary: \mark will accept arbitrary types for its argument and ignore 
them
        Status: Started
        Owner: address@hidden
        Labels: -Type-Defect Type-Maintainability

Comment #1 on issue 4472 by address@hidden: \mark will accept arbitrary types  
for its argument and ignore them
https://code.google.com/p/lilypond/issues/detail?id=4472

Bad analysis.  \mark takes an argument of arbitrary type.  Your first mark  
command consequently takes s4, and the Mark_engraver silently replaces a  
non-number mark with the normal numbering.  I think we won't probably do  
wrong much by giving \mark a predicate of type number-or-markup instead.   
That way, your input will be rendered invalid instead of gobbling s4  
silently.

I don't know what the idea was before mark became a music function.  Its  
original incantation in the parser (2.12 or something) behaved pretty much  
the same I think.  When converting to music function, I retained this, but  
since the mark engraver throws stuff away anyway, that is not helpful.

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