regex101: Golang Match Workspace

Pro

^start of line

googlethe literal text google (case sensitive)

Non-Capturing Group(?:\.(?:[a-z]{1,2}|[a-z]{4,}|[^c.\n][a-z]{2}|[a-z][^o.\n][a-z]|[a-z]{2}[^m.\n])|\.com\.(?:[a-z]|[a-z]{3,}|[^a.\n][a-z]|[a-z][^u.\n])|(?:\.[a-z]+){3})

1st Alternative\.(?:[a-z]{1,2}|[a-z]{4,}|[^c.\n][a-z]{2}|[a-z][^o.\n][a-z]|[a-z]{2}[^m.\n])

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[a-z]{1,2}|[a-z]{4,}|[^c.\n][a-z]{2}|[a-z][^o.\n][a-z]|[a-z]{2}[^m.\n])

1st Alternative[a-z]{1,2}

Character Class[a-z]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

2nd Alternative[a-z]{4,}

Character Class[a-z]{4,}

{4,}matches at least 4 characters from the set below:

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

3rd Alternative[^c.\n][a-z]{2}

Negated Character Class[^c.\n]

cthe literal c (99₁₀ / 143₈ / 63₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

Character Class[a-z]{2}

{2}matches exactly 2 characters from the set below:

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

4th Alternative[a-z][^o.\n][a-z]

Character Class[a-z]

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

Negated Character Class[^o.\n]

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

Character Class[a-z]

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

5th Alternative[a-z]{2}[^m.\n]

Character Class[a-z]{2}

{2}matches exactly 2 characters from the set below:

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

Negated Character Class[^m.\n]

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

2nd Alternative\.com\.(?:[a-z]|[a-z]{3,}|[^a.\n][a-z]|[a-z][^u.\n])

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[a-z]|[a-z]{3,}|[^a.\n][a-z]|[a-z][^u.\n])

1st Alternative[a-z]

Character Class[a-z]

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

2nd Alternative[a-z]{3,}

Character Class[a-z]{3,}

{3,}matches at least 3 characters from the set below:

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

3rd Alternative[^a.\n][a-z]

Negated Character Class[^a.\n]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\na line-feed (newline) character (ASCII 10)

Character Class[a-z]

4th Alternative[a-z][^u.\n]

3rd Alternative(?:\.[a-z]+){3}

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

$end of line

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

25 tokens

Regular Expression

^google(?:\.(?:[a-z]{1,2}|[a-z]{4,}|[^c.\n][a-z]{2}|[a-z][^o.\n][a-z]|[a-z]{2}[^m.\n])|\.com\.(?:[a-z]|[a-z]{3,}|[^a.\n][a-z]|[a-z][^u.\n])|(?:\.[a-z]+){3})(?:\.[a-z]+)*$

Regular Expressions 101

Regular Expression

Unit Tests