Regular Expressions 101

Group 1((?<=\s)[A-z]+|(?<=\.)[A-z\s]+)

1st Alternative(?<=\s)[A-z]+

Positive Lookbehind(?<=\s)

\sany whitespace character

Character Class[A-z]+

+matches at least one character from the set below:

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

2nd Alternative(?<=\.)[A-z\s]+

Positive Lookbehind(?<=\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-z\s]+

+matches at least one character from the set below:

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

\sany whitespace character

Positive Lookahead(?=\?)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

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.

26 tokens

Regular Expression

((?<=\s)[A-z]+|(?<=\.)[A-z\s]+)(?=\?)

New

Can you detect this?
Ok smarty pants, how about THIS?
Oh you're good...T H I S?
Dammit!