Regular Expressions 101

Pro

Positive Lookbehind(?<=\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\w{3,4}\b|\*)

1st Alternative\w{3,4}\b

\w{3,4}a Unicode word character, repeated between 3 and 4 times

\ba Unicode word boundary

2nd Alternative\*

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(?<=\*)\.(?:\w{3,4}\b|\*)

New

txt files `(*.txt)|*.txt|All files (*.*)|*.*`
Image Files`|*.jpg;*.jpeg;*.png;`
Excel Files `(*.xls, *.xlsx)|*.xls;*.xlsx|CSV Files (*.csv)|*.csv`