How do I compile the ShortTalk grammar?
The ShortTalk grammar is defined in the file grammar.elg. The command M-x listen-load-grammar compiles the grammar into two formats: one is grammar.lcm, a file of lists describing the totality of all commands derived from the grammar, and the other is grammar.txt, which contains a subset of commands, each represented as a pair of the form spoken form/written form. It is assumed that the subset contains enough bigrams to cover all the commands (which are usually bigrams or trigram, although 4-grams also are common) (Currently, even the grammar.txt contains around 20,000 commands. This could probably safely be pruned.) The file grammar.lcm is loaded into a hash table when listen-mode is activated. This is again a solution that is much more space intensive than really needed. However, the resulting parser is fast, since it checks each prefix of possible command words through a single hash table lookup.
