From: Robin Salkeld <redmine@...>
Date: 2010-04-06T09:30:44+09:00
Subject: [ruby-core:29268] [Bug #1868] ERB single line comment does not work

Issue #1868 has been updated by Robin Salkeld.


This seems to be caused by removing \n from the regular expressions used in ERB::Compiler::SimpleScanner2:

stag_reg = /(.*?)(<%%|<%=|<%#|<%|\z)/m
etag_reg = /(.*?)(%%>|%>|\z)/m

It looks like the original change was intended as an optimization, but unintentially changed the behaviour. Restoring the \n's fixes it.

<%# may work for comments as well, but a lot of us have relied on the old behaviour, and I see no reason not to fix an accidental regression.
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http://redmine.ruby-lang.org/issues/show/1868

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