Patterns free download for Mac


18 March 2019

Build patterns quickly and effortlessly with syntax coloring.


Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring, and with matching and replacing occurring in real time.

  • Regular expression syntax coloring makes it easy to see how your pattern is interpreted by the regex engine. No more confusion about what needs to be escaped.
  • See matches and replacements in real time while you edit your pattern.
  • Copy match and replacement code snippets of your pattern for quick use in a number of different programming languages.
  • The built-in regular expression reference sheet helps you find the piece of regex syntax you need.

What's new in Patterns

Version 1.2:

Note: Now requires OS X 10.7 or later

  • The major v1.2 update brings lots of useful new regex features, Dark Mode support for Mojave, and much more.
  • The new Matches view lets you inspect all matches and captured text produced by your regex, alongside your search text. Clicking on a match or group highlights both the matched search text and the specific portion of your regex that produced the match or capture.
  • The new Filter mode lets you filter the search text by lines that either match or don't match your regex.
  • The regex engine can now be customised for different regex "flavors". Supported flavors are: Oniguruma, POSIX Basic (BRE), POSIX Extended (ERE), Perl (PCRE), emacs, Java, Ruby, bash, grep, and sed.
  • New Copy Code modes: grep, sed, Swift, and Escaped Pattern.
  • Ability to navigate through all matches using the new navigation buttons and keyboard shortcuts (Command-G and Command-Shift-G).
  • Automatic detection and removal of extra backslash-escapes when pasting a regex from an external source.
  • The replacement mode now highlights replaced text in the same style as in the search text.
  • User interface improvements, performance enhancements for large files, improved regex syntax highlighting with more colors, bugfixes, and more.

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