Regular Expressions 101

Pro

Negative Lookbehind(?<!\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^*\s]+

+matches at least one character outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\sany whitespace character

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negative Lookahead(?!\*)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negative Lookahead(?!(?:(?:[^$]*\$){2})*[^$]*$)

Non-Capturing Group(?:(?:[^$]*\$){2})*

*repeats the group contents below any number of times:

Non-Capturing Group(?:[^$]*\$){2}

{2}repeats the group contents below exactly 2 times:

Negated Character Class[^$]*

*matches any number of characters outside the set below:

$the literal $ (36₁₀ / 44₈ / 24₁₆)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

Negated Character Class[^$]*

*matches any number of characters outside the set below:

$the literal $ (36₁₀ / 44₈ / 24₁₆)

$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.

26 tokens

Regular Expression

(?<!\*)\*[^*\s]+\*(?!\*)(?!(?:(?:[^$]*\$){2})*[^$]*$)

Lorem **Ipsum**(1) is *simply*(2) dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, $ *single-start-inside* \sqrt{2} **must be no bold **(3) *must be no italic *(4) $ ****(5) **(6)...