If you don't know how to use regular expressions, then just don't use them. Ask someone to help you. Libs like this one help understand how do the regexps work, but for production use - use "regular" regular expressions. They perform better (real, effective code is faster than created with vreg), and more people know regexp than this. If have to - perhaps extract regexps to separate file and apply proper dovumentation. You can use multiline regexps and add comments, you know? And load them from separate file, with all support your IDE can provide. Check the freespacing mode, Michael Kohl mentioned.
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If you don't know how to use regular expressions, then just don't use them. Ask someone to help you. Libs like this one help understand how do the regexps work, but for production use - use "regular" regular expressions. They perform better (real, effective code is faster than created with vreg), and more people know regexp than this. If have to - perhaps extract regexps to separate file and apply proper dovumentation. You can use multiline regexps and add comments, you know? And load them from separate file, with all support your IDE can provide. Check the freespacing mode, Michael Kohl mentioned.