https://issues.apache.org/bugzilla/show_bug.cgi?id=57136
Bug ID: 57136
Summary: EL Parser escaping dollar sign not ${ or ${...}
Product: Tomcat 8
Version: trunk
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: EL
Assignee: [email protected]
Reporter: [email protected]
In the EL 3.0 spec it says...
Alternatively, the escape characters \$ and \# can be used to escape what
would
otherwise be treated as an eval-expression. Given the literal-expressions:
\${exprA}
\#{exprB}
The resulting values would again be the strings ${exprA} and #{exprB}.
I believe that means it should not escape lets say "Price: \\$500.00" it should
instead output "Price: \$500.00"(it currently would output "Price: $500.00")
but should instead escape "Price: \\${500.00}" and the output of that would be
"Price: ${500.00}".
Normally this wouldn't be run into, but I happened to run into this issue
passing javascript code through the EL processor, that happens to have some
escaped dollar signs inside some regex strings.
It maybe a little more acceptable to use \${ and \#{ as the escapes, as that is
a better indication that there is about to be an expression
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