regex101: Python Substitution Workspace

Pro

Non-Capturing Group(?:Fig|Table)

1st AlternativeFig

Figthe literal text Fig (case sensitive)

2nd AlternativeTable

Tablethe literal text Table (case sensitive)

Non-Capturing Group(?:(?:(?!Fig|Table)[\s\S])+?Source[^\n]*\n|[^\n]*\n)

1st Alternative(?:(?!Fig|Table)[\s\S])+?Source[^\n]*\n

Non-Capturing Group(?:(?!Fig|Table)[\s\S])+?

+?repeats the group contents below at least once:

Negative Lookahead(?!Fig|Table)

1st AlternativeFig

Figthe literal text Fig (case sensitive)

2nd AlternativeTable

Tablethe literal text Table (case sensitive)

Character Class[\s\S]

\sa Unicode whitespace character

\Sany character that is not Unicode whitespace

Sourcethe literal text Source (case sensitive)

Negated Character Class[^\n]*

*matches any number of characters outside the set below:

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

2nd Alternative[^\n]*\n

Negated Character Class[^\n]*

*matches any number of characters outside the set below:

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

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

25 tokens

Regular Expression

(?:Fig|Table)(?:(?:(?!Fig|Table)[\s\S])+?Source[^\n]*\n|[^\n]*\n)

New

This is
Fig. 13: John holding his present and
the flowers
Source: official photographer
a beautiful
Table: a table of some kind
and fully
complete
Table: John holding his present and
Source: official photographer
sentence

Extraction

This is
Fig. 13: John holding his present and
the flowers
Source: official photographer
a beautiful
Table: a table of some kind
and fully
complete
Table: John holding his present and
Source: official photographer
sentence