`KeyError` from `Hash#fetch` should inspect key.
To distinguish string keys and symbol keys.
MODIFY
mrbgems/mruby-hash-ext/mrblib/hash.rb
mrbgems/mruby-hash-ext/mrblib/hash.rb
@@ -165,7 +165,7 @@ class Hash
elsif none != NONE
none
else
- raise KeyError, "Key not found: #{key}"
+ raise KeyError, "Key not found: #{key.inspect}"
end
else
self[key]

`KeyError` from `Hash#fetch` should inspect key.

To distinguish string keys and symbol keys.