Regular Expressions 101

^start of line

Non-Capturing Group(?:\d+(?:\|\d+)?,)+

+repeats the group contents below at least once:

\d+a digit, repeated at least once

Non-Capturing Group(?:\|\d+)?

?repeats the group contents below at most once:

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

\d+a digit, repeated at least once

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\|\d+)?

?repeats the group contents below at most once:

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

\d+a digit, repeated at least once

$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

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Search reference

Regular Expression

^(?:\d+(?:\|\d+)?,)+\d+(?:\|\d+)?$

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