Regular Expressions 101

.*?any character (except for line terminators), repeated any number of times

Character Class[a-z0-9]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[.?!]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Positive Lookahead(?= )

the literal (32₁₀ / 40₈ / 20₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

.*?[a-z0-9][.?!](?= )

Test String
New

Bali bombings: U.S. President George W. Bush amongst many others has condemned the perpetrators of the Bali car bombing of October 11. The death toll has now risen to at least 187.

Substitution
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\1

Regular Expression

Test StringNew

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Test String
New

Substitution
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