* src/treesit.c (treesit_check_position): Extract out new function.
(Ftreesit_node_first_child_for_pos)
(Ftreesit_node_descendant_for_range): Replace code with the new
function.
(Ftreesit_query_capture): Add missing check for node and parser. Add
check for range for BEG and END. Move treesit_initialize to the
beginning of the function.
* test/src/treesit-tests.el (treesit-node-api)
(treesit-query-api): Add tests for out-of-range error.
d31a253983