Sorry if this has been reported. I’m not sure if this is a bug or a feature request.
I’ll call it a bug because it differs from the Eclipse Java editor in functionality.
In the Java editor, when you double-click on a string such as “SomeObject.ASubClass.OneMore.Method”, and my double-click was over the word “ASubClass”, just the text “ASubClass” is highlighted. However in the MyEclipse jsp editor, double-clicking within that or any word selects the entire string (all 4 words and periods).
I rarely need to select the string, but rather a sub-section.