Regular Expressions 101

Explanation

Pro

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Positive Lookahead(?=\.?[A-Z0-9])

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-Z0-9]

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

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

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-Z0-9])

New

".A.B.C.D.E.F.G.H.I.J"
".K.Y.C.A.N.Y.W.H.I.A.W...1.B...1.1.7"
"Testing using quotes func "quot"."
A.b.e.f. testing test

".A.B.C.D.E.F.G.H.I.J"
".K.Y.C.A.N.Y.W.H.I.A.W...1.B...1.1.7"
"Testing using quotes func "quot"."
A.b.e.f. testing test