regex101: resolves bug in vscode extension plibither8.remove-comments v1.2.2, see https://regex101.com/r/1M3UCa/1

#the literal # (35₁₀ / 43₈ / 23₁₆)

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 " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^"'`]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

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 " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^"'`]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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 " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

Negated Character Class[^"'`]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

Negated Character Class[^"'`]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

$end of line

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

Search reference

Regular Expression

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

Test String
New

            #somecomment
 # some comment
"#not a commnet" #another comment
 '#not a comment'
     jquery_code = "$('#some-identifier')[0].click()"#yet a comment, but the identifier :(
jquery_code = '$("#some-identifier")[0].click()'
# just another comment

Regular Expression

Test StringNew

Test String
New