Re: problem with extending 'magnetic snapping lyrics' engraver
>> but how about just >> changing >> >> (let* ((hyphen-sten (ly:lyric-hyphen::print hyphen)) >> >> to >> >> (let* ((hyphen-sten (ly:grob-property hyphen 'stencil)) >> >> >> ? Then you can do \override LyricHyphen.stencil = #what-you-want to >> get the result. > > D'oh, so simple, thanks again! Well, it doesn't work :-) The magnetic snapping engraver sets the stencil of all affected `hyphen` grobs to `empty-stencil`. On the other hand, the solution with a separate property for the formatter to be accessed with `ly:grob-property-data` seems to work just fine. Werner
Re: problem with extending 'magnetic snapping lyrics' engraver
> It's uncomfortable to have grob properties of procedure type, since > they are automatically resolved as callbacks. You set > LyricWord.hyphen-formatter to ly:lyric-hyphen::print. Then, when > you do > > (ly:grob-property grob 'hyphen-formatter) > > this not only looks up ly:lyric-hyphen::print in the property, but > executes it on the LyricWord and returns the result. Since > ly:lyric-hyphen::print is written to work on a LyricHyphen and not a > LyricWord, it gives up and returns '(). Then you try to apply the > "formatter" '() to the hyphen, which goes wrong. You could use > ly:grob-property-data, which skips callbacks, [...] Thanks a lot for the explanation! > but how about just > changing > > (let* ((hyphen-sten (ly:lyric-hyphen::print hyphen)) > > to > > (let* ((hyphen-sten (ly:grob-property hyphen 'stencil)) > > > ? Then you can do \override LyricHyphen.stencil = #what-you-want to > get the result. D'oh, so simple, thanks again! Werner
Re: problem with extending 'magnetic snapping lyrics' engraver
Le 06/04/2022 à 09:49, Werner LEMBERG a écrit : I'm trying to generalize the 'magnetic snapping lyrics' engraver (the most recent version posted as https://lists.gnu.org/archive/html/lilypond-user/2019-05/msg00389.html) by providing a new property `hyphen-formatter`, to be used instead of the hard-coded `ly:lyric-hyphen::print`. Attached you can see the final file together with a diff to the original version (ignoring whitespace), and an example. Unfortunately, it doesn't work, and I can't find the problem: It aborts with ``` ERROR: Wrong type to apply: () ``` Please advise. It's uncomfortable to have grob properties of procedure type, since they are automatically resolved as callbacks. You set LyricWord.hyphen-formatter to ly:lyric-hyphen::print. Then, when you do (ly:grob-property grob 'hyphen-formatter) this not only looks up ly:lyric-hyphen::print in the property, but executes it on the LyricWord and returns the result. Since ly:lyric-hyphen::print is written to work on a LyricHyphen and not a LyricWord, it gives up and returns '(). Then you try to apply the "formatter" '() to the hyphen, which goes wrong. You could use ly:grob-property-data, which skips callbacks, but how about just changing (let* ((hyphen-sten (ly:lyric-hyphen::print hyphen)) to (let* ((hyphen-sten (ly:grob-property hyphen 'stencil)) ? Then you can do \override LyricHyphen.stencil = #what-you-want to get the result. Jean
