Regular Expressions 101

^start of line

Non-Capturing Group(?:\d\h+|[\d.]*[A-Z][A-Z\d.]*\h+)*

*repeats the group contents below any number of times:

1st Alternative\d\h+

\da digit

\h+any horizontal whitespace character, repeated at least once

2nd Alternative[\d.]*[A-Z][A-Z\d.]*\h+

Character Class[\d.]*

*matches any number of characters from the set below:

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z\d.]*

*matches any number of characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\h+any horizontal whitespace character, repeated at least once

Character Class[A-Z]{3,}

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

A-Zone character from A (65₁₀) to Z (90₁₀) (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

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Search reference

Regular Expression

^(?:\d\h+|[\d.]*[A-Z][A-Z\d.]*\h+)*[A-Z]{3,}

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