Regular Expressions 101

Pro

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Group 1([\w\*\-\+\/ ]+)

Character Class[\w\*\-\+\/ ]+

+matches at least one character from the set below:

\wany word character

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(!r)?

?repeats the group contents below at most once:

!rthe literal text !r (case sensitive)

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\*\-\+\/ ]+)(!r)?

New

a ~ b c d*e !r x
a ~ b c
a ~ b c d1 !r y,
a ~ b c D !r z,
a~b c d*e!r z

a ~ b c d*e !r x
a ~ b c
a ~ b c d1 !r y,
a ~ b c D !r z,
a~b c d*e!r z