Regular Expressions 101

Pro

Group 1(\d){1}

{1}repeats the group contents below exactly 1 time:

\da digit

\ta tab character (ASCII 9)

Group 2(\d){1,3}

{1,3}repeats the group contents below between 1 and 3 times:

\da digit

\%the literal % (37₁₀ / 45₈ / 25₁₆)

\sany whitespace character

\ta tab character (ASCII 9)

Group 3(\d){1}

{1}repeats the group contents below exactly 1 time:

\da digit

\ta tab character (ASCII 9)

Group 4(\d){1,3}

{1,3}repeats the group contents below between 1 and 3 times:

\da digit

\%the literal % (37₁₀ / 45₈ / 25₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

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25 tokens

(\d){1}\t\t(\d){1,3}\%\s\t(\d){1}\t(\d){1,3}\%

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