"integer addition (+)",
"subtraction (-)",
"integer subtraction (-)",
- "concatenation (.)",
+ "concatenation (.) or string",
"string",
"left bitshift (<<)",
"right bitshift (>>)",
"unpack",
"pack",
"split",
- "join",
+ "join or string",
"list",
"list slice",
"anonymous list ([])",
MEMBER_TO_FPTR(Perl_ck_fun), /* oct */
MEMBER_TO_FPTR(Perl_ck_fun), /* abs */
MEMBER_TO_FPTR(Perl_ck_lengthconst), /* length */
- MEMBER_TO_FPTR(Perl_ck_fun), /* substr */
+ MEMBER_TO_FPTR(Perl_ck_substr), /* substr */
MEMBER_TO_FPTR(Perl_ck_fun), /* vec */
MEMBER_TO_FPTR(Perl_ck_index), /* index */
MEMBER_TO_FPTR(Perl_ck_index), /* rindex */