# Code Review: gsub\_classdup

**URL:** <https://www.ruby-forum.com/t/code-review-gsub-classdup/138056>\
**Category:** IronRuby\
**Created:** [May 19, 2008, 10:27pm UTC](https://www.ruby-forum.com/t/code-review-gsub-classdup/138056 "2008-05-19T22:27:30Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![grujildo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/94ad74/32.png) [@grujildo](https://www.ruby-forum.com/u/grujildo)\
**Post date:** [May 19, 2008, 10:27pm UTC](https://www.ruby-forum.com/t/code-review-gsub-classdup/138056/1 "2008-05-19T22:27:30Z")

</div>

tfpt review /shelveset:gsub\_classdup;REDMOND\tomat

Fixes bug #20199: Getting metaclass for nil causes a .NET exception  
Fixes bug #20137: gsub $n bug  
Fixes bug #19902: Regex global matching vars are not nil when they don’t  
match  
Fixes bug #20222: super call in initialize method of a module  
Fixes bug #20011: Can’t subclass module

- 

```
  Also implements Module#initialize, Module#initialize_copy.

```

Reviewed F2F by John.

Tomas