This is a feature request for SO sites. I would like to have highlighting of all strings which match the selected string in code examples.
A number of IDEs and editors have a facility where if I select a string in the code, it highlights all matching strings. For example, with Notepad++, if I'm editing any file, and I select a word (using double-click), then it finds all of the matching words elsewhere in the document.
I would find this useful when looking at code to find all usages of a particular identifier. Please note that I'm not asking for semantic highlighting, just that all matching strings get hightlighted. It should, however, be restricted the code blocks. Notepad++, does this highlighting in plain text files.