Regular Expressions 101

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Character Class[{#%]

{the literal { (123₁₀ / 173₈ / 7B₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

Negative Lookahead(?!\s*(?:include|extends)\b)

\s*a Unicode whitespace character, repeated any number of times

Non-Capturing Group(?:include|extends)

1st Alternativeinclude

includethe literal text include (case sensitive)

2nd Alternativeextends

extendsthe literal text extends (case sensitive)

\ba Unicode word boundary

.*?any Unicode character (except for line terminators), repeated any number of times

Character Class[}#%]

}the literal } (125₁₀ / 175₈ / 7D₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

{[{#%](?!\s*(?:include|extends)\b).*?[}#%]}

New

{# This is a comment #}
{% if cows > pandas %}
{{ my_variable }}
{% include 'foo.html' %}
{% extends 'foo/bar/baz.html' %}