Re: incorporating templates w/ conditionals

[Br. Samuel Springuel]

I developed something similar based on some suggestions on the list back 
in December of last year.  You can see what I ended up using here:

http://lists.gnu.org/archive/html/lilypond-user/2016-12/msg00636.html

For my actual implementation I further refined the idea as follows:

In an included formatting file (which is used for every file in the 
project) I have the following code block:

#(if (not (defined? 'gender))
     (define gender "neutral"))

heshe = #(cond ((equal? gender "male") #{ \lyricmode { he } #})
               ((equal? gender "female")  #{ \lyricmode{ she } #})
               (else  #{ \lyricmode { \override 
Lyrics.LyricText.font-shape = #'italic he/she \revert 
Lyrics.LyricText.font-shape } #}))

hisher = #(cond ((equal? gender "male") #{ \lyricmode { him } #})
                ((equal? gender "female")  #{ \lyricmode{ her } #})
                (else  #{ \lyricmode { \override 
Lyrics.LyricText.font-shape = #'italic his/her \revert 
Lyrics.LyricText.font-shape } #}))

himher = #(cond ((equal? gender "male") #{ \lyricmode { him } #})
                ((equal? gender "female")  #{ \lyricmode{ her } #})
                (else  #{ \lyricmode { \override 
Lyrics.LyricText.font-shape = #'italic him/her \revert 
Lyrics.LyricText.font-shape } #}))

In this way, the variable gender is always defined and has a default 
value of "neutral".  Simultaneously, I can, in any particular project 
file, define gender manually and that will be respected (the use of the 
defined? conditional means that it doesn't matter whether gender is 
defined before or after file inclusion.

I would imagine that something like this should work for you too.
--
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Br. Samuel, OSB
St. Anselm’s Abbey
Washington, DC
(R. Padraic Springuel)

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