Regular Expressions 101

Pro

1st Alternative\, (.*%).+\, ETA (.*)\R(?![\s\S]*ETA )

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1(.*%)

.*any character (except for line terminators), repeated any number of times

%the literal % (37₁₀ / 45₈ / 25₁₆)

.+any character (except for line terminators), repeated at least once

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

ETA the literal text ETA (case sensitive)

Group 2(.*)

.*any character (except for line terminators), repeated any number of times

\Ra newline sequence

Negative Lookahead(?![\s\S]*ETA )

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

ETA the literal text ETA (case sensitive)

2nd Alternative(ERROR : .*)\n(?![\s\S]*ERROR )

Group 3(ERROR : .*)

ERROR : the literal text ERROR : (case sensitive)

.*any character (except for line terminators), repeated any number of times

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

Negative Lookahead(?![\s\S]*ERROR )

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

ERROR the literal text ERROR (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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25 tokens

\, (.*%).+\, ETA (.*)\R(?![\s\S]*ETA )|(ERROR : .*)\n(?![\s\S]*ERROR )

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