Regular Expressions 101

Pro

{{the literal text {{

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

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

Group 1([^|\s]+)

Negated Character Class[^|\s]+

+matches at least one character outside the set below:

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\sa Unicode whitespace character

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

Non-Capturing Group(?:\|\s*(.+?)\s*)?

?repeats the group contents below at most once:

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

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

Group 2(.+?)

.+?any Unicode character (except for line terminators), repeated at least once

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

}}the literal text }}

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

{{\s*\$([^|\s]+)\s*(?:\|\s*(.+?)\s*)?}}

New

lorem {{ $name }} ipsus
lorem {{ $name | pipe1 | pipe2 }} ipsus
lorem {{ $name | singlePipe }} ipsus
lorem {{ $ whitespaceBeforeDollar | singlePipe }} ipsus
lorem {{ noDollar | pipe1 | pipe2 }} ipsus	
lorem {{ $name textWithoutPipe }} ipsus
lorem {{$whiteSpace | tolerated}} ipsus
lorem {{$whiteSpace|tolerated}} ipsus