Re: \startTrillSpan without the tr at the beginning?

[Richard Shann]

On Sun, 2015-01-25 at 20:54 +0100, Pierre Perol-Schneider wrote:
> Try:
> 
> {
>   b'-\tweak style #'zigzag \startTextSpan
>   b' b'
>   \stopTextSpan
> }
> 

That is a step forward - the zigzag distinguishes the sign from the
prall ... looking up the documentation for TextSpanner leads to the same
as before "stencil" is referred to as "The symbol to print." and  "the
stencil callback" in successive entries
http://lilypond.org/doc/v2.18/Documentation/internals/textspanner 

It looks like the actual drawing of zigzags and so on is in compiled
code, and so not replaceable by the user without running GUB - at least
I can't find any trace of it.

Thanks for all these suggestions, I guess an enhancement request would
be for a wavy line zigzag ...

Richard


> 
> Pierre
> 
> 
> 2015-01-25 20:14 GMT+01:00 Richard Shann <address@hidden>:
>         On Sun, 2015-01-25 at 12:03 +0100, Pierre Perol-Schneider
>         wrote:
>         > Try :
>         >
>         > \version "2.18.2"
>         >
>         > {
>         >   b'-\tweak bound-details.left.text #'()
>         
>         I've started to look more deeply to see if the sharp zig-zag
>         line could
>         be replaced by a user-defined line. I found this
>         
>         8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
>         http://lilypond.org/doc/v2.18/Documentation/internals/trillspanner
>         
>          stencil (stencil):
>         
>             ly:line-spanner::print
>         
>             The symbol to print.
>         8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
>         This sounds strange - I would guess stencil is a procedure not
>         a glyph
>         (? what would symbol mean here?) - and indeed the next entry
>         on that
>         page is
>         8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
>          style (symbol):
>         
>             'trill
>         
>             This setting determines in what style a grob is typeset.
>         Valid
>         choices depend on the stencil callback reading this property.
>         8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
>         
>         Is it on the cards to write some scheme procedure that stencil
>         could be
>         set to in order generate a more wavy line?
>         
>         
>         Richard
>         
>         
> 
>