reWork: a regular expression workbench

Pattern: A regular expression, without surrounding characters. For example, a*b or ab|cd, not /a*b/.

ignore case ^ and $ match the beginning and end of each line all matches

Replacement text:

Input: A string that is matched against the regular expression. For example, ab and aaab both match a*b.

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Results:

Input		Results

Output:

Instructions: Create a parse tree of your regular expression. This feature is highly experimental, and has known bugs.

This is a graph of the FSA that corresponds to this regular expression. This won't help you use regular expressions; it's just to test my graph presentation library, and for fun. If you're interested in this sort of thing, see my reAnimator tool.

Graph:

For more information about how to use regular expressions, including examples, additional documentation, and additional tools, see:

Regular-Expressions.info (online)
RegExLib (online)
Jeffrey Freidl's Mastering Regular Expressions (Amazon)