Regular Expressions 101

\d+a digit, repeated at least once

Character Class[ ]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:lac|crs?|k)

1st Alternativelac

lacthe literal text lac (case sensitive)

2nd Alternativecrs?

crthe literal text cr (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

3rd Alternativek

kthe literal k (107₁₀ / 153₈ / 6B₁₆) (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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\d+[ ]?(?:lac|crs?|k)

New

it should not match this65 lac and this 55 lacand this87lacdsdsa

but it should match 76 lac. and 87 cr. including . at the end as well.