Regular Expressions 101

1st Alternative((1+) (1+) a)

Group 1((1+) (1+) a)

Group 2(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

Group 3(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

athe literal text a (case sensitive)

2nd Alternative((1+) \5(1+) -)

Group 4((1+) \5(1+) -)

Group 5(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

\5the text saved by group 5

Group 6(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

-the literal text -

3rd Alternative((1+) :)

Group 7((1+) :)

Group 8(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

:the literal text :

4th Alternative((1+) (1+) s)

Group 9((1+) (1+) s)

Group 10(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

Group 11(1+)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

sthe literal text s (case sensitive)

5th Alternative(1+ ~ ?)

Group 12(1+ ~ ?)

1+the literal 1 (49₁₀ / 61₈ / 31₁₆) , repeated at least once

~the literal text ~

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

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

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25 tokens

Regular Expression

((1+) (1+) a)|((1+) \5(1+) -)|((1+) :)|((1+) (1+) s)|(1+ ~ ?)

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