Regular Expressions 101

Pro

Positive Lookbehind(?<=\\fn)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

fnthe literal text fn (case sensitive)

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

Positive Lookahead(?=\\fn|\)(?:\\(?!fn)|$))

1st Alternative\\fn

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

fnthe literal text fn (case sensitive)

2nd Alternative\)(?:\\(?!fn)|$)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Non-Capturing Group(?:\\(?!fn)|$)

1st Alternative\\(?!fn)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Negative Lookahead(?!fn)

fnthe literal text fn (case sensitive)

2nd Alternative$

$end of line

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

(?<=\\fn).*?(?=\\fn|\)(?:\\(?!fn)|$))

New

\t(\fnJester (BIG))
\t(\fnJester (BIG))\i1 
\t(\fnJester (BIG)
\t(\fnJester))))\fnArial (BOLD)\

\t(\fnJester))))\fnArial (BOLD)\fnArial (BOLD)\

\t(\fnJester (BIG))
\t(\fnJester (BIG))\i1 
\t(\fnJester (BIG)
\t(\fnJester))))\fnArial (BOLD)\

\t(\fnJester))))\fnArial (BOLD)\fnArial (BOLD)\