As you all know, I'm writing a regex book. In an effort to get all the chapters up to a similar page count, I'm looking for example programs to use throughout the chapter to show how a concept plays in the actual code.

In particular, I need code that shows examples of:

• ^ and $ under the influence of /m
• global matching -- /g, /gc, \G, tricks with pos()
• substitution

The order of topics in the book is in that order, so if you have an idea for some s///g code, then it'd be found in the substitution chapter. I'm not asking for you to send me large portions of code or regexes, but rather to give me ideas. What do you use regexes for? What would you like to learn to do with regexes?

Contributions to the book will be met with the proper acknowledgements (just as blakem and Erudil and merlyn -- they're in my book).

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
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