Make {**{}} return unfrozen empty hash

Previously, method call keyword splats and hash keyword splats
were compiled exactly the same.  This is because parse-wise, they
operate on indentical nodes when it comes to compiling the **{}.

Fix this by using an ugly hack of temporarily modifying the
nd_brace flag in the method call keyword splat case.  Inside
compile_hash, only optimize the **{} case for hashes where the
nd_brace flag has been modified to reflect we are in the method
call keyword splat case and it is safe to do so.

Since compile_keyword_args is only called in one place, move the
keyword_node_p call out of that method to the single caller to
avoid duplicating the code.

0 files changed, 0 insertions, 0 deletions