Regular Expressions 101

Negative Lookbehind(?<!\s)

\sa Unicode whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\s+a Unicode whitespace character, repeated at least once

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)-\s+

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