Re: multiple tags

[David Kastrup]

James <address@hidden> writes:

> Is is possible to have simultaneous multiple tags?
> I'm trying:
> \version "2.14.2"
>
> control = {
>         s1*2
>         \tag #'threes { \time 3/4 s2. }
>         \tag #'twos { \time 2/4 s2 } }
> tset = \relative c' {
>         c4 d e f
>         \tag #'up {g4 a b c }
>         \tag #'down { g4 f e d }
>         \tag #'threes { g4 f e }
>         \tag #'twos { g2 } }
>
> \score {
>         \new Staff << {
>                         \keepWithTag #'threes
>                         \control } {
>                         \keepWithTag #'up
>                         \keepwithTag #'threes
>                         \tset } >> }
> \score {
>         \new Staff << {
>                         \keepWithTag #'twos
>                         \control } {
>                         \keepWithTag #'down
>                         \keepWithTag #'twos
>                         \tset } >> }
>
> but lilypond is not happy with the doubled tags.

What makes you think that?  It is quite happy, but if you ask it to
remove every tag except #'twos, and then remove every remaining tag
except #'down, naturally nothing will be left.  \keepWithTag does not
make sense with nested expressions: you need to use \removeWithTag in
this case.

-- 
David Kastrup