Regular Expressions 101

Pro

^start of line

Positive Lookahead(?=[^\d\n]*\d)

Negated Character Class[^\d\n]*

*matches any number of characters outside the set below:

\da digit

\na line-feed (newline) character (ASCII 10)

\da digit

Positive Lookahead(?=[^!-\/:-@[-`{-~\n]*[!-\/:-@[-`{-~])

Negated Character Class[^!-\/:-@[-`{-~\n]*

*matches any number of characters outside the set below:

!-\/one character from ! (33₁₀) to / (47₁₀)

:-@one character from : (58₁₀) to @ (64₁₀)

[-`one character from [ (91₁₀) to ` (96₁₀)

{-~one character from { (123₁₀) to ~ (126₁₀)

\na line-feed (newline) character (ASCII 10)

Character Class[!-\/:-@[-`{-~]

!-\/one character from ! (33₁₀) to / (47₁₀)

:-@one character from : (58₁₀) to @ (64₁₀)

[-`one character from [ (91₁₀) to ` (96₁₀)

{-~one character from { (123₁₀) to ~ (126₁₀)

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

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

^(?=[^\d\n]*\d)(?=[^!-\/:-@[-`{-~\n]*[!-\/:-@[-`{-~]).*

New

abc-
_=-!@#
123-
a1c-