Portable Regex

Input

In computing, a regular expression provides a concise and flexible means to "match" (specify and recognize) strings of text, such as particular characters, words, or patterns of characters. Common abbreviations for "regular expression" include regex and regexp. A regular expression is written in a formal language that can be interpreted by a regular expression processor, which is a program that either serves as a parser generator or examines text and identifies parts that match the provided specification. The concept of regular expressions was first popularized by utilities provided by Unix distributions, in particular the editor ed and the filter grep. Historically, the concept of regular expressions is associated with Kleene's formalism of regular sets, introduced in the 1950s.
Regular Expression:  Insert special characters... Tab Linebreak Whitespace Any non-whitespace Word boundary Any digit [0-9] Any letter or digit Any non-word character Any word Any non-digit Non-greedy match Zero or more of prec. term One or more of prec. term Any character Escape Any Hanzi Any Hiragana Any Katakana Any Hangul Any Cyrillic Any Latin (incl. diacritics) Any lowercase letter Any uppercase letter Any consonant Any vowel

Replacement Text: 

Regex it!

Result

Other Options

Test Search for specified value and return true or false depending on the result
Exec Search for specified value, and return text of the found results
Select Highlight matching text
Grep Print lines matching the pattern
Reverse Grep Print lines not matching the pattern
Modify original Show changes in input window
Show original Display source text