JSTL allows varName[propertyName] syntax. I'm curious about the quoting
requirements for propertyName. For example, in the JSTL spec, page 3-20,
there is an example that looks like this:
<c:out value='${user.preferences["shipping"]}'/>
Most examples in the spec use double quotes around attribute values,
but this example switches to single quotes so that the property name
can be double-quoted.
I thought perhaps it was a requirement that the property name be enclosed
in double quotes, but a few tests using single quotes seem to work as well.
Is that officially supported, or did I just get lucky?
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