Regular Expressions 101

Pro

Negative Lookbehind(?<![a-zA-Z0-9:])

Character Class[a-zA-Z0-9:]

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 1([a-zA-Z](?:\d{2,6}[a-zA-Z]?|\d[xX]{1,2}))

Character Class[a-zA-Z]

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Non-Capturing Group(?:\d{2,6}[a-zA-Z]?|\d[xX]{1,2})

1st Alternative\d{2,6}[a-zA-Z]?

\d{2,6}a Unicode decimal digit, repeated between 2 and 6 times

Character Class[a-zA-Z]?

?matches at most one character from the set below:

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

2nd Alternative\d[xX]{1,2}

\da Unicode decimal digit

Character Class[xX]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case sensitive)

Positive Lookahead(?=[^a-zA-Z0-9]|AP|DEV|$)

1st Alternative[^a-zA-Z0-9]

Negated Character Class[^a-zA-Z0-9]

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

2nd AlternativeAP

APthe literal text AP (case sensitive)

3rd AlternativeDEV

DEVthe literal text DEV (case sensitive)

4th Alternative$

$end of line

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

(?<![a-zA-Z0-9:])([a-zA-Z](?:\d{2,6}[a-zA-Z]?|\d[xX]{1,2}))(?=[^a-zA-Z0-9]|AP|DEV|$)

New

[KG6.R77.1.2][J123-P1A-00194]/12C114