🚀 go-pugleaf

In article <1992Sep14.173126.25527@uwm.edu>, andrew@csd4.csd.uwm.edu (Andy Biewer) writes:
> Hello NetPeople,
 
> How does one use the ||: label in a METAFONT ligtable description?  Say, for
> instance, that I would like the characters k,m,n,p,c to be replaced by their
> uppercase counterparts K,M,N,P,C when they appear at the end of the word.
> First, is it possible to use a ligtable description to do this?  And,
> second, if so, how do I do it, and does it incorporate the ||: label?

||: is used to indicate a change of character at the beginning of
a word. For example, I might have F replaced with a swash F when
it occurs at that location. This is done using:

ligtable ||:
  "F" =: oct"177"; % Swash F

End-of-word ligatures require the choice of a boundary character.
My choice is usually oct"015" [carriage return] which I leave
empty (along with oct"40" [space]). Your example, for uppercasing
a letter at the end of a word would be handled as follows:

boundarychar:=oct"015";

ligtable "k":
  boundarychar =: "K";

In actuality, you'd also need to insert ligatures for k + various
punctuation marks, using =:| to retain the punctuation character:

ligtable "k":
  boundarychar =: "K",
  "." =:| "K";

and so on.

-dh

Don Hosek                  
dhosek@ymir.claremont.edu  
Quixote Digital Typography 
714-621-1291