regex101: PCRE (Legacy) Match Workspace

Atomic Group(?>[\s\S]*\n)

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

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

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

Negative Lookbehind(?<!\\)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

25 tokens

Regular Expression

(?>[\s\S]*\n).*(?<!\\)%

New

(a) last line % now with comment
(b) last line with escaped \%  and not treated
(c) last line withouth any special chars
(d) last line terminates with %
(e) last line terminates with escaped \%
(f) beginning % but even escaped \% is ignored
(g) Some text not containing percent

Extraction

(a) last line % now with comment
(b) last line with escaped \%  and not treated
(c) last line withouth any special chars
(d) last line terminates with %
(e) last line terminates with escaped \%
(f) beginning % but even escaped \% is ignored
(g) Some text not containing percent