doesn't recognize char literals

[tesch1]

i think this is the fix:

(defvar bison--word-constituent-re "\\(\\sw\\|_\\)\\|\\('.'\\)")

although maybe it should go in bison--production-re ?

try this:

rule:
          'h' 'e' 'l' 'l' 'o' {}
         | sym1 {}
         ;