Re: fret-diagram and barré with another finger on the same string

[Carl Sorensen]

On 3/13/19, 8:04 AM, "Federico Bruni" <address@hidden> wrote:

    BTW, I'm surprised that any misspelled command in the alist does not 
    trigger any error message:
    
    \version "2.19.82"
    
    {
      s1^\markup{
        \fret-diagram-verbose #'(
          (mute 6)
          (open 5)
          (open 4)
          (open 3)
          (place-fret 2 6)
    
          ;(place-fret 1 5)
          (please harakiri 1 5)
        )
      }
    }
    

It's pretty much the same as the fact that using an undefined property does not 
trigger any error message.  You put the undefined property into the props 
alist, and then it's never checked by the engraver, so there's no issue.

The list parser (found in scm/fret-diagrams.scm, fret-parse-marking-list) 
silently ignores any unknown codes in a fret-diagram-verbose list.  I can see 
that it would be not too much effort to add an error message.  I will put it on 
my to-do list.

Thanks,

Carl