Re: [Lilypond-auto] Issue 2543 in lilypond: Patch: Allow tweaks in Lyrics.

[lilypond]

Comment #4 on issue 2543 by address@hidden: Patch: Allow tweaks in Lyrics.
http://code.google.com/p/lilypond/issues/detail?id=2543

One thing that might be worth noting is that parallel music is nothing you  
would use inside of lyrics, so strictly speaking there might not be a need  
for tweaks within Lyrics, as \once\override should always do the trick.

However, there is a technical reason for preferring a tweak: \once\override  
works by recording an old value at the time of override, and restoring it  
at the end of the timestep.  If any _other_ property setting commands  
intervene in between, this process may lead to unexpected results.  Also  
the property override sequences in the presence of grace notes are not  
necessarily as expected.

A \tweak, in contrast, is directly tied into the event in question and  
nothing else.  There is no save/restore mechanism involved, no interaction  
with context properties and no interaction with timing.

For that reason, I consider it advantageous to have it work consistently in  
Lyrics, even though strictly speaking one should usually be able to do  
without here.