Recursively Removing Embedded Quotes

[Buck]

I have a routine that recursively removes embedded parentheses and it
works just fine. But when I adapt that regex to do the same thing
with single quotes, it doesn't work. It matches two quoted strings,
not the inner one.

E.g. the regex below

'[^'']*'

should match inner, but it matches left and right.

what am I doing wrong?

' left ' inner ' right '

 

[Mirco Wahab]

I have a routine that recursively removes embedded parentheses and it
works just fine.

I didn't find one in your posting.

But when I adapt that regex to do the same thing
with single quotes, it doesn't work. It matches
two quoted strings, not the inner one.
E.g. the regex below
'[^'']*'
should match inner, but it matches left and right.
what am I doing wrong?
' left ' inner ' right '

The regex causes the engine to 'eat up' the
quotes around inner, to extract all quoted
phrases, you could use zero-with assertions:

...
my $text = q{ ' left ' inner ' right ' };

my @matches = $text =~ /(?<=')[^']+(?=')/g;
...

Regards

Mirco

 

[Brian McCauley]

I have a routine that recursively removes embedded parentheses and it
works just fine. But when I adapt that regex to do the same thing
with single quotes, it doesn't work. It matches two quoted strings,
not the inner one.

E.g. the regex below

'[^'']*'

should match inner, but it matches left and right.

' left ' inner ' right '

what am I doing wrong?

Expecting you computer to be psychic.

What is it about the sample data that indicates that it is a nested
string and not two separate strings?