Regular Expressions 101

^start of line

\s*any whitespace character, repeated any number of times

\d{1,2}a digit, repeated between 1 and 2 times

Group 1(\s*[,\s]\s*\d{1,2})*

*repeats the group contents below any number of times:

\s*any whitespace character, repeated any number of times

Character Class[,\s]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\sany whitespace character

\s*any whitespace character, repeated any number of times

\d{1,2}a digit, repeated between 1 and 2 times

\s*any whitespace character, repeated any number of times

$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

^\s*\d{1,2}(\s*[,\s]\s*\d{1,2})*\s*$

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