Regular Expressions 101

1st Alternative\bNOW[ ._-]WEB[ ._-]?(DL|RIP)\b

\ba Unicode word boundary

NOWthe literal text NOW (case insensitive)

Character Class[ ._-]

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

WEBthe literal text WEB (case insensitive)

Character Class[ ._-]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1(DL|RIP)

1st AlternativeDL

DLthe literal text DL (case insensitive)

2nd AlternativeRIP

RIPthe literal text RIP (case insensitive)

\ba Unicode word boundary

2nd Alternative\[[^\]]*\bNOW\b[^\]]*\]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Negated Character Class[^\]]*

*matches any number of characters outside the set below:

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\ba Unicode word boundary

NOWthe literal text NOW (case insensitive)

\ba Unicode word boundary

Negated Character Class[^\]]*

*matches any number of characters outside the set below:

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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Search reference

Regular Expression

\bNOW[ ._-]WEB[ ._-]?(DL|RIP)\b|\[[^\]]*\bNOW\b[^\]]*\]

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