# parsed incorrectly in qr/\Q...\E/x

[choroba]

Where
perlre

Description
The documentation currently states:

Use of /x means that if you want real whitespace or "#" characters in the pattern (outside a bracketed character class, which is unaffected by /x), then you'll either have to escape them (using backslashes or \Q...\E) o

But in reality, \Q...\E doesn't help:

"a" =~ /( \Q # abc \E) /x;

leads to

Unmatched ( in regex; marked by <-- HERE in m/(  <-- HERE \ \#\ abc\ \\E\)\ / 

The documentation should be fixed, unless it's a bug in the implementation (I'm not sure).

[choroba]

It seems it's not a bug in the documentation but in the implementation.

print "a#b" =~ /( \Q\#\E )/x; # no output

It seems there's no way how to match # inside of \Q...\E.

[choroba]

Reference: https://stackoverflow.com/q/68378838/1030675

[Grinnz]

Relevant: #13257

[Grinnz]

Note that this is not a problem for \Q$var\E, only for literal patterns within the \Q escape sequence.