chickadee » genturfahi » make-lerfu-porsi-pabalvi-lerfu

make-lerfu-porsi-pabalvi-lerfu porsiprocedure
the parse position to advance.

Create a lerfu-porsi from an existing lerfu-porsi by advancing the index zva by a single character.

It is an error if porsi is not of type lerfu-porsi.

Behavior is undefined if this procedure is called when lerfu-porsi-fanmo? returns #t for this porsi.