Regular Expressions 101

Pro

Positive Lookbehind(?<=\bT(?:\.[a-z_]+)*\.)

\ban ASCII word boundary

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Non-Capturing Group(?:\.[a-z_]+)*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-z_]+

+matches at least one character from the set below:

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1([a-z_]+)

Character Class[a-z_]+

+matches at least one character from the set below:

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\ban ASCII word boundary

Negative Lookahead(?!)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

(?<=\bT(?:\.[a-z_]+)*\.)([a-z_]+)\b(?!\(\))

New

T.name.other_name.another_name
T.name.again_name.ect_name.last_name()

T.name.other_name.another_name
T.name.again_name.ect_name.last_name()