[rules-users] Drools 5.0.0 CR1 : multibyte characters in dsl fails with "no viable alternative at character"

[Yusuke Yamamoto]

Hi,

I found that Drools 5.0.0 CR1 is unable to compile DSLs including  
multibyte characters in them.
For example, mydsl.dsl as following:
---------
[consequence]print:"{value}" = System.out.println("{value}");
[consequence]出力:"{value}" = System.out.println("{value}");
---------
Fails to be compiled with
---------
line 3:13 no viable alternative at character '出'
line 3:14 no viable alternative at character '力'
---------

"出力" means "print" in Japanese.

It used to be work with Drools 4.0.7.
I couldn't found any related issues on Jira. But is it a known issue?

Best regards,
Yusuke