Regular Expressions 101

Pro

"the literal " (34₁₀ / 42₈ / 22₁₆)

Positive Lookahead(?=(?:[^']*'[^']*')*[^']*$)

Non-Capturing Group(?:[^']*'[^']*')*

*repeats the group contents below any number of times:

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

$end of string, or before its final line terminator

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

"(?=(?:[^']*'[^']*')*[^']*$)

New

"foo" => 'foo'
'foo' => 'foo'
abc "foo" => abc 'foo'
foo "bar", "baz" => foo 'bar', 'baz'
abc 'foo "bar" baz' => abc 'foo "bar" baz'

"foo" => 'foo'
'foo' => 'foo'
abc "foo" => abc 'foo'
foo "bar", "baz" => foo 'bar', 'baz'
abc 'foo "bar" baz' => abc 'foo "bar" baz'