Regular Expressions 101

Pro

†the literal † (8224₁₀ / 20040₈ / 2020₁₆)

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

Negative Lookbehind(?<!\d)

\da digit

Group death_year(?<death_year>\d{4})

\d{4}a digit, repeated exactly 4 times

Negative Lookahead(?!\d)

\da digit

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

†.*?(?<!\d)(?<death_year>\d{4})(?!\d)

†1656), (ur. 1520, † ok. 1585) - it works fine

but in this case:

(† 21 VII 1595)

†1656), (ur. 1520, † ok. 1585) - it works fine

but in this case:

(† 21 VII 1595)