regex101: JavaScript Substitution Workspace

Non-Capturing Group(?:(.*?)(?=\B'.*?'\B)(?:(\B'.*?'\B))|(.*?)$)

1st Alternative(.*?)(?=\B'.*?'\B)(?:(\B'.*?'\B))

Group 1(.*?)

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

Positive Lookahead(?=\B'.*?'\B)

\Bnot an ASCII word boundary

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\Bnot an ASCII word boundary

Non-Capturing Group(?:(\B'.*?'\B))

Group 2(\B'.*?'\B)

\Bnot an ASCII word boundary

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\Bnot an ASCII word boundary

2nd Alternative(.*?)$

Group 3(.*?)

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

$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

26 tokens

Regular Expression

(?:(.*?)(?=\B'.*?'\B)(?:(\B'.*?'\B))|(.*?)$)

New

My friend's name is 'Adam' and he owns a McDonald's near my son's school.
hello 'this' is my'str'ing
hi 'john', hi 'john'
'sam's'
'test' things
'test'
No apostrophes here.
Walmart's prices are low.
Sentence with 1 ' apostrophe

Substitution

\U$1\L$2\U$3

My friend's name is 'Adam' and he owns a McDonald's near my son's school.
hello 'this' is my'str'ing
hi 'john', hi 'john'
'sam's'
'test' things
'test'
No apostrophes here.
Walmart's prices are low.
Sentence with 1 ' apostrophe