Regular Expressions 101

Explanation
Pro

Non-Capturing Group(?:lazy_)?

?repeats the group contents below at most once:

lazy_the literal text lazy_ (case sensitive)

gtxtthe literal text gtxt (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1([\"'])

Character Class[\"']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Non-Capturing Group(?:(?!\1)[^\\]|\\.)*

*repeats the group contents below any number of times:

1st Alternative(?!\1)[^\\]

Negative Lookahead(?!\1)

\1the text saved by group 1

Negated Character Class[^\\]

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

2nd Alternative\\.

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any Unicode character (except for line terminators)

\1the text saved by group 1

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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

Detailed match information will be displayed here automatically.

25 tokens

(?:lazy_)?gtxt\(([\"'])(?:(?!\1)[^\\]|\\.)*\1\)

New

gtxt('hi there "bob"') how are you gtxt('i am fine')
gtxt('hi there \'bob\'') how are you gtxt("i am fine")
gtxt("hi there \"bob")

gtxt('hi there "bob"') how are you gtxt('i am fine')
gtxt('hi there \'bob\'') how are you gtxt("i am fine")
gtxt("hi there \"bob")