Is There A Better Way To Apply A Nl2br Filter With Jinja/flask?

I'm using Jinja with Flask (autoescape enabled) and I'm attempting to apply this filter import re from jinja2 import evalcontextfilter, Markup, escape _paragraph_re = re.compile(

Solution 1:

Simpler no, but how about only slightly more complicated? Try it with this regex:

(?:\r\n|\r(?!\n)|\n){2,}

The original regex matches \r\n as a single line separator at first, but it's required to match two of them, so it backtracks and matches it as \r followed by \n. The negative lookahead, (?!\n), prevents it from matching \r alone if the next character is \n.