Hi!
I happened to stumble on the following entry in changelog for 6.0.19:
<fix>
Fix various edge-cases when parsing EL, particularly inside attribute
values. Note that the Expert Group has confirmed that JSP.1.6 takes
precedence over JSP.1.3.10. Therefore EL in attributes must be escaped
twice. (markt)
</fix>
Chapters mentioned here:
JSP.1.6 Quoting and Escape Conventions
JSP.1.3.10.1 EBNF Grammar for JSP Syntax
Related discussion:
"EL and TCK" on dev@, started 2008-09-18
http://tomcat.markmail.org/thread/2rq3vkvx76vmhq75
Related commits:
Tomcat 6:
http://svn.apache.org/viewvc?rev=708165&view=rev
http://svn.apache.org/viewvc?rev=708166&view=rev
Tomcat trunk:
http://svn.apache.org/viewvc?rev=702587&view=rev
So apparently the change in EL escaping in attributes that was done
while fixing BZ 57136 [1] has already been discussed and resolved in a
different way 7 years ago.
[1] https://bz.apache.org/bugzilla/show_bug.cgi?id=57136#c17
Best regards,
Konstantin Kolinko
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