gl_tree_search_node  227 maint/gnulib/lib/gl_anytree_oset.h   gl_oset_node_t node = gl_tree_search_node (set, elt);
gl_tree_search_node  243 maint/gnulib/lib/gl_anytree_oset.h   gl_oset_node_t old_node = gl_tree_search_node (set, elt);