# Re: newbie: Strings and RegExp

**URL:** <https://www.ruby-forum.com/t/re-newbie-strings-and-regexp/72907>\
**Category:** Ruby\
**Created:** [October 19, 2006, 8:13pm UTC](https://www.ruby-forum.com/t/re-newbie-strings-and-regexp/72907 "2006-10-19T20:13:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![phrogz](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/2acd7d/32.png) [@phrogz](https://www.ruby-forum.com/u/phrogz)\
**Post date:** [October 19, 2006, 8:13pm UTC](https://www.ruby-forum.com/t/re-newbie-strings-and-regexp/72907/1 "2006-10-19T20:13:43Z")

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From: Diego V. [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)]

> However here you are using /mo instead of /m. What does the extra o  
> mean? And where can I read more about this topic? I’ve checked on the  
> Pragmatic Programmer book (the one online) but I can’t find  
> any info on  
> that.

[http://phrogz.net/ProgrammingRuby/language.html#regularexpressionoptions](http://phrogz.net/ProgrammingRuby/language.html#regularexpressionoptions)