Regular Expressions 101

Pro

\ban ASCII word boundary

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

Character Class[rs]

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?: (?!M[rs]\.|and )\w+)*

*repeats the group contents below any number of times:

the literal (32₁₀ / 40₈ / 20₁₆)

Negative Lookahead(?!M[rs]\.|and )

1st AlternativeM[rs]\.

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

Character Class[rs]

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternativeand

and the literal text and (case sensitive)

\w+any word 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.

25 tokens

\bM[rs]\.(?: (?!M[rs]\.|and )\w+)*

New

Mr. Snow
Mr. John Snow
Mr. John Snow (Winterfall of the nord lands)
Mr. Snow and Ms. Stark

Mr. Snow
Mr. John Snow
Mr. John Snow (Winterfall of the nord lands)
Mr. Snow and Ms. Stark