Generator (3rd stage: glyph positioning)
 
 The input sequence: 
 
 (generator
  (0
   (cond
    (" ([^ ]*) "
     (1 otf:khmr=pres,blws,abvs,psts,clig))
    ("."
     [ otf:khmr=+ ]))
   *))
 
 The output sequence: