Regular Expressions 101

Pro

Positive Lookbehind(?<=\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1([^\W\d\_])

Negated Character Class[^\W\d\_]

\Wany non-word character

\da digit

\_the literal _ (95₁₀ / 137₈ / 5F₁₆)

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

(?<=\.)([^\W\d\_])

New

Run-D.m.C.
Run-D.M.c.
Run-D.m.c.
Run-d.m.c.

R.E.M.
r.E.M.
R.e.M.
R.e.m.
r.e.m.

Run-D.m.C.
Run-D.M.c.
Run-D.m.c.
Run-d.m.c.

R.E.M.
r.E.M.
R.e.M.
R.e.m.
r.e.m.