Regular Expressions 101

Group 1(["'`])

Character Class["'`]

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

Non-Capturing Group(?:(?=(\\?))\2.)*?

*?repeats the group contents below any number of times:

Positive Lookahead(?=(\\?))

Group 2(\\?)

\\?optionally matches the literal \ (92₁₀ / 134₈ / 5C₁₆)

\2the text saved by group 2

.any character

\1the text saved by group 1

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(["'`])(?:(?=(\\?))\2.)*?\1

ggg, "hhh" 
ggg
"hhh
hhhh"
...
"hh\"x\"jj"
...
"%d=\"hi
hi\"oh"

`gg"g" 
\" ` 

`Hello "My
friend"
`

'bbb'