wasm/glob: allow for NULL delimiters argument

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>

internal/compiler/wasm/opa/callgraph.csv

@@ -941,24 +941,23 @@ opa_glob_match,opa_value_get
 opa_glob_match,operator\20new\28unsigned\20long\29
 opa_glob_match,memcpy
 opa_glob_match,operator\20delete\28void*\29
+opa_glob_match,void\20std::__1::vector<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\2c\20std::__1::allocator<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>::__push_back_slow_path<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&&\29
 opa_glob_match,opa_builtin_cache_get
 opa_glob_match,opa_builtin_cache_set
 opa_glob_match,std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>::basic_string\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20const&\29
 opa_glob_match,std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::find<cache_key>\28cache_key\20const&\29
 opa_glob_match,std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>::operator=\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20const&\29
 opa_glob_match,glob_translate\28char\20const*\2c\20unsigned\20long\2c\20std::__1::vector<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\2c\20std::__1::allocator<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20const&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>*\29
-opa_glob_match,cache\28\29
 opa_glob_match,std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::pair<cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\2c\20false>\28cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\29
 opa_glob_match,std::__1::pair<std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\2c\20bool>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__emplace_unique_key_args<cache_key\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\28cache_key\20const&\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>&&\29
-opa_glob_match,std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::~pair\28\29
 opa_glob_match,opa_string
 opa_glob_match,opa_regex_match
 opa_glob_match,abort
+void\20std::__1::vector<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\2c\20std::__1::allocator<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>::__push_back_slow_path<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&&\29,operator\20new\28unsigned\20long\29
+void\20std::__1::vector<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\2c\20std::__1::allocator<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>::__push_back_slow_path<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&&\29,operator\20delete\28void*\29
+void\20std::__1::vector<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\2c\20std::__1::allocator<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>::__push_back_slow_path<std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&&\29,abort
 std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::find<cache_key>\28cache_key\20const&\29,std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>::operator\28\29\28cache_key\20const&\29\20const
 std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::find<cache_key>\28cache_key\20const&\29,std::__1::equal_to<cache_key>::operator\28\29\28cache_key\20const&\2c\20cache_key\20const&\29\20const
-cache\28\29,opa_builtin_cache_get
-cache\28\29,operator\20new\28unsigned\20long\29
-cache\28\29,opa_builtin_cache_set
 std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::pair<cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\2c\20false>\28cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\29,std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>::basic_string\28std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20const&\29
 std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::pair<cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\2c\20false>\28cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\29,operator\20new\28unsigned\20long\29
 std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::pair<cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\2c\20false>\28cache_key&\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>&\29,abort
@@ -967,7 +966,6 @@ std::__1::pair<std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_
 std::__1::pair<std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\2c\20bool>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__emplace_unique_key_args<cache_key\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\28cache_key\20const&\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>&&\29,operator\20new\28unsigned\20long\29
 std::__1::pair<std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\2c\20bool>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__emplace_unique_key_args<cache_key\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\28cache_key\20const&\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>&&\29,std::__1::__next_prime\28unsigned\20long\29
 std::__1::pair<std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20void*>*>\2c\20bool>\20std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__emplace_unique_key_args<cache_key\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\28cache_key\20const&\2c\20std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>&&\29,std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__rehash\28unsigned\20long\29
-std::__1::pair<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>::~pair\28\29,operator\20delete\28void*\29
 std::__1::equal_to<cache_key>::operator\28\29\28cache_key\20const&\2c\20cache_key\20const&\29\20const,memcmp
 std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__rehash\28unsigned\20long\29,operator\20new\28unsigned\20long\29
 std::__1::__hash_table<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::__unordered_map_hasher<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::hash<cache_key>\2c\20std::__1::equal_to<cache_key>\2c\20true>\2c\20std::__1::__unordered_map_equal<cache_key\2c\20std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\2c\20std::__1::equal_to<cache_key>\2c\20std::__1::hash<cache_key>\2c\20true>\2c\20std::__1::allocator<std::__1::__hash_value_type<cache_key\2c\20std::__1::basic_string<char\2c\20std::__1::char_traits<char>\2c\20std::__1::allocator<char>\20>\20>\20>\20>::__rehash\28unsigned\20long\29,operator\20delete\28void*\29

test/cases/testdata/globmatch/test-globmatch-0159.yaml

@@ -21,7 +21,7 @@ cases:
     p[x] {
       glob.match("foo*", null, "foo.bar", x)
     }
-  note: globmatch/glob match single without default delimiter
+  note: globmatch/glob match single without default delimiter, glob non-empty
   query: data.generated.p = x
   sort_bindings: true
   want_result:

wasm/src/glob-compiler.cc

@@ -128,7 +128,7 @@ std::string glob_translate(const char *glob, size_t n, const std::vector<std::st
 
     if (delimiters.empty())
     {
-        single_mark = "[^\\.]";
+        single_mark = ".";
     } else {
         single_mark = "[^";
 

wasm/src/glob.cc

@@ -53,7 +53,9 @@ static glob_cache* cache()
 OPA_BUILTIN
 opa_value *opa_glob_match(opa_value *pattern, opa_value *delimiters, opa_value *match)
 {
-    if (opa_value_type(pattern) != OPA_STRING || opa_value_type(delimiters) != OPA_ARRAY || opa_value_type(match) != OPA_STRING)
+    if (opa_value_type(pattern) != OPA_STRING ||
+        (opa_value_type(delimiters) != OPA_ARRAY && opa_value_type(delimiters) != OPA_NULL) ||
+        opa_value_type(match) != OPA_STRING)
     {
         return NULL;
     }
@@ -75,6 +77,15 @@ opa_value *opa_glob_match(opa_value *pattern, opa_value *delimiters, opa_value *
         v.push_back(std::string(s->v, s->len));
         prev = curr;
     }
+
+    // NOTE(sr): If we're passed an empty array, use "." as default delimiter.
+    //           If we're passed OPA_NULL, use no delimiter; but separate glob parts by '.*'
+    if (opa_value_type(delimiters) == OPA_ARRAY) {
+        if (v.empty())
+        {
+            v.push_back(std::string("."));
+        }
+    }
 
     glob_cache *c = cache();
     cache_key key = cache_key(std::string(p->v, p->len), v);