Use `__send__` instead of `send`.
MODIFY
mrbgems/mruby-proc-ext/mrblib/proc.rb
mrbgems/mruby-proc-ext/mrblib/proc.rb
@@ -27,7 +27,7 @@ class Proc
pproc = self
make_curry = proc do |given_args=[]|
- send(type) do |*args|
+ __send__(type) do |*args|
new_args = given_args + args
if new_args.size >= arity
pproc[*new_args]

Use `__send__` instead of `send`.