Regular Expressions 101

1st Alternative(?:[^,]*\[[^][]*])+[^,]*

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

+repeats the group contents below at least once:

Negated Character Class[^,]*

*matches any number of characters outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Negated Character Class[^][]*

*matches any number of characters outside the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Negated Character Class[^,]*

*matches any number of characters outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative[^,]+

Negated Character Class[^,]+

+matches at least one character outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

Regular Expression

(?:[^,]*\[[^][]*])+[^,]*|[^,]+

New

year:2020,concepts:[ab553,cd779],publisher:elsevier
year:2020,concepts:[ab553,cd779]jk,publisher:elsevier
year:2020,concepts:[ab553,cd779]jk[test].kjkj,publisher:elsevier
year:2020,concepts:[ab553,cd779]jk[test].kjk[j,publisher:elsevier
year:2020,concepts[,:],publisher:elsevier
year:2020,concepts:[ab553,cd779][t,est][].kj,kj,publisher:elsevier[,],],[,][,kk