Regular Expressions 101

Explanation
Pro

Group 1(\w+)

\w+any word character, repeated at least once

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2(.+:\/\/.+(?:[.:].+)+(?:\/))?

?repeats the group contents below at most once:

.+any character (except for line terminators), repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

.+any character (except for line terminators), repeated at least once

Non-Capturing Group(?:[.:].+)+

+repeats the group contents below at least once:

Character Class[.:]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.+any character (except for line terminators), repeated at least once

Non-Capturing Group(?:\/)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3([\w.-]+)

Character Class[\w.-]+

+matches at least one character from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4([\w.-]+)

Character Class[\w.-]+

+matches at least one character from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Group 5(.+)

.+any character (except for line terminators), repeated at least once

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

Ready to run

26 tokens

(\w+)-(.+:\/\/.+(?:[.:].+)+(?:\/))?([\w.-]+)\/([\w.-]+)@(.+)