Regular Expressions 101

^start of line

Negated Character Class[^\S\r\n]*

*matches any number of characters outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

\d{6,10}a digit, repeated between 6 and 10 times

Negated Character Class[^\S\r\n]*

*matches any number of characters outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

Non-Capturing Group(?:(?:\r\n?|\n)(?![^\S\r\n]*\d{6,10}[^\S\r\n]*[\r\n]).+)*

*repeats the group contents below any number of times:

Non-Capturing Group(?:\r\n?|\n)

1st Alternative\r\n?

\ra carriage return (ASCII 13)

\n?optionally matches a line-feed (newline) character (ASCII 10)

2nd Alternative\n

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

Negative Lookahead(?![^\S\r\n]*\d{6,10}[^\S\r\n]*[\r\n])

Negated Character Class[^\S\r\n]*

*matches any number of characters outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

\d{6,10}a digit, repeated between 6 and 10 times

Negated Character Class[^\S\r\n]*

*matches any number of characters outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

Character Class[\r\n]

\ra carriage return (ASCII 13)

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

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

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\r\n]*\d{6,10}[^\S\r\n]*(?:(?:\r\n?|\n)(?![^\S\r\n]*\d{6,10}[^\S\r\n]*[\r\n]).+)*

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