Regular Expressions 101

\ba Unicode word boundary

Negative Lookbehind(?<!\d/)

\da Unicode decimal digit

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:3 meters|steel)

1st Alternative3 meters

3 metersthe literal text 3 meters (case sensitive)

2nd Alternativesteel

steelthe literal text steel (case sensitive)

\ba Unicode word boundary

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(?<!\d/)(?:3 meters|steel)\b

New

0   D1  3 meters|2/3 meters|3.5 meters
1   D2                        3 meters
2   D3             3/5 meters|3 meters
3   D4                      2/3 meters
4   M1                  steel|g1_steel
5   M2                           steel
6   M3                        g1_steel