Regular Expressions 101

Pro

Group 1([^\s,](?:[^\n,]*[^\s,])?)

Negated Character Class[^\s,]

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Non-Capturing Group(?:[^\n,]*[^\s,])?

?repeats the group contents below at most once:

Negated Character Class[^\n,]*

*matches any number of characters outside the set below:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Negated Character Class[^\s,]

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Negative Lookahead(?!.*\1)

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

\1the text saved by group 1

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.

25 tokens

([^\s,](?:[^\n,]*[^\s,])?)(?!.*\1)

New

Anna & x, Anna & x
Alb, Berta 222, Alb
Al Pacino
Abb cd xy, Abb cd xy, C123, C123, B