Issue #2547 has been updated by Yui NARUSE.

Status changed from Open to Assigned
Assigned to set to Yukihiro Matsumoto

trunk also reproduce this.

However this may be a feature:
* Ruby's regexp forbids to split character escape like 'a="\\"; p /#{a}y/'
* /#{"\\"}y/ is optimized as /\\y/ on parser, so this is valid
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http://redmine.ruby-lang.org/issues/show/2547

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