Update on changing header fonts

[Michael J Millett]

I wanted to post an update of my attempt at changing the fonts in the 
headers, since it might be helpful to other non-programmers like 
myself. It's been a real education!

Writing this code into the header part of an LP file, then running it 
in LP, produced a long list of fonts that are available to LP:

#(ly:font-config-display-fonts)

Here is a short example of what it looked like:

family AppleGothic
 AppleGothic:style=Regular
family Osaka
 Osaka:style=Regular-Mono
family Century Schoolbook L
 Century Schoolbook L:style=Bold
family Century Schoolbook L
 Century Schoolbook L:style=Italic
family Helvetica CY
 Helvetica 
CY:style=Plain,Simple,Standard,Normale,Standaard,Normal,Texto 
com˙n,Almindelig,Texto Normal

Not all the fonts on my system got listed or seem to be available. I 
don't know why that is or what to do about it; That will have to be a 
project for later. The font I really wanted to use, Goudy, was not one 
that was listed as being available.

Cutting and pasting from the list into an LP file miraculously produced 
a font change. The name from the list that LP wanted was the word after 
"family". Here is the code for an absurd but working example:

\header {
  title    = \markup { \override #'(font-name . "F u t u r a  ") 
"FEUILLET D'ALBUM"}
composer = \markup { \override #'(font-name . "A m e r i c a n   T y p 
e w r i t e r ") "JS Bach" } }

Here is the oddity: Notice that in the font names, a space  exists 
between each later. I would never have guessed this as a possibility.

Thanks to everyone for your help and leading me in the right direction.

And now for my next act: Getting midi2ly to work in the Terminal. 
Please stay tuned . . .

Michael