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Demonstrates how regex corpus unit tests work.
Corpus tests allow you to unit test your regular expressions using a typical red => green development flow.

Test sections are marked indicating if the following lines should (#+) or should not (#-) match the regex pattern. Blank lines are ignored. 
 
#+ The following lines will be tested. If they match, they'll be hilighted in green, otherwise they'll be red
Rajesh@123
Rajesh123@


