Regular Expressions 101

Positive Lookbehind(?<=^|[^\S\r\n]+|\})

1st Alternative^

^start of line

2nd Alternative[^\S\r\n]+

Negated Character Class[^\S\r\n]+

+matches at least one character outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

3rd Alternative\}

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\Dany character that's not a digit

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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\r\n]+|\})\.\D[\w-]+

New

.class {}
@media print {
  .class {}
}

#id {
  .class {}
}

.class {}.class {} .class {}