Here is a list of all documented variables with links to the struct/union documentation for each field:

A

B

C

D

E

F

G

H

I

K

L

M

N

O

P

Q

R

S

T

U

V

W

_

- a -

• accepts_block_stack : pm_parser
• alnum_char : pm_encoding_t
• alpha_char : pm_encoding_t
• arguments : pm_arguments_node, pm_arguments_t, pm_break_node, pm_call_node, pm_index_and_write_node, pm_index_operator_write_node, pm_index_or_write_node, pm_index_target_node, pm_next_node, pm_return_node, pm_super_node, pm_yield_node
• ary : RArray
• as : pm_lex_mode, RArray, RObject, RString
• aux : RArray, RString
• available_p_func : rb_memory_view_entry