Regular Expressions 101

\ba Unicode word boundary

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Non-Capturing Group(?:(?!\d{1,2}\.\d{1,2}\.\d{2,4}\b).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!\d{1,2}\.\d{1,2}\.\d{2,4}\b)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2,4}a Unicode decimal digit, repeated between 2 and 4 times

\ba Unicode word boundary

.any Unicode character (except for line terminators)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2,4}a Unicode decimal digit, repeated between 2 and 4 times

Positive Lookahead(?=\s+[A-Z]|$)

1st Alternative\s+[A-Z]

\s+a Unicode whitespace character, repeated at least once

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

2nd Alternative$

$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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\b[A-Z](?:(?!\d{1,2}\.\d{1,2}\.\d{2,4}\b).)*\d{1,2}\.\d{1,2}\.\d{2,4}(?=\s+[A-Z]|$)

New

N678 à p. du 11.6.23 C+23.6.23 N−14.,24.7.23

N678 N−12.,13.12.22,18.,19.,31.1.,9.2.,7. au 10.,13. au 17.,20.,21.,22.,28.
au 31.3.,6.,13.,19.,20.4.,5.,8.5.23

N68 du 12.6. au 3.9.23 C+23.6.,15.8.23 N-18.,25.6.,2.,17. au 21.,23. au 28.,31.7.,3.,4.,7.,8.,9.,27.8.23

N68 du 12.6. au 3.9.23 1.2.34 abcd 1.2.34 Test

Regular Expression

Substitution