@brief Helper function to add a list of items to a menu. A single item is added directly to the menu, whereas multiple items will be added to a sub-me

** Add a charset posfix to an instruction. */

** Add element 'idx' to 'ktable' of pattern at the top of the stack; ** Return index of new element. ** If new element is nil, does not add it to tabl

** Create a jump to 'test' and fix 'test' to jump to next instruction */

** Concatentate the contents of table 'idx1' into table 'idx2'. ** (Assume that both indices are negative.) ** Return the original length of table 'id

** Make final adjustments in a tree. Fix open calls in tree 't', ** making them refer to their respective rules or raising appropriate ** errors (if n

** Find the final destination of a sequence of jumps */

** Check whether a pattern tree has captures */

** If 'headfail(tree)' true, then 'tree' can fail only depending on the ** next character of the subject. */

** Opcode interpreter */