#regexp for #president!

via @lkundrak

https://metalhead.club/@lkundrak/116325595849754547

#SarcasButOnlyHalf

TIL: in javascript regexes, \b (word boundary) matches between an umlaut and a regular letter:

"aaäaaöaa".replaceAll(/\b\w/g, (x) => x.toUpperCase()) results in "AaäAaöAa"

#javascript #regexp

RegExp lastIndex Mutates Global Matches?!

Global regex has MEMORY! The lastIndex property remembers where it stopped. Reset it to 0 and the same regex matches DIFFERENTLY. This mutation behavior will cause bugs you'll never find!

#javascript #javascripttricks #regexp #lastindex #globalregex #javascriptweird #javascriptquiz #codingchallenge #javascriptshorts #javascriptwtf #regexmutation #advancedjavascript

https://www.youtube.com/watch?v=R9Oos0uu-BQ

Need a #regexp sanity check from someone else who actually knows their regexp

I was using the following regexp to find empty spans to remove.

<span style=".*?"><\/span>

My understanding is that the ? means it'll find the smallest valid match that's followed by "></span>

that _worked_ for YEARS in one of my codebases and now it's matching across multiple spans.

<span style="[^"]*"><\/span>

is the fix BUT my question is _should I even NEED a fix?_

I prefer Gryphon, but ydy.

https://evilwizard.tumblr.com/post/803031736615337984

#gryphon #griffin #regexp

NOTE: this was originally published on the older version of this blog, some content may be broken/outdated.

Following a discussion on hacker news I have found myself wondering about regular expressions in ruby 1.9.

In this major version ruby switched its regex engine to oniguruma (and, since a few days ago to a fork of it called Onigmo ).

This engine is widely more powerful than the […]

https://riffraff.info/2012/02/matching-nested-structures-with-regexps-in-ruby-1-9/

Holy guacamole, Batman! You can use regular expressions in #LibreOffice Calc!

This makes me unreasonably happy. (Why did I stick with MS Office so long?)

#RegExp #RegEx