Hello,

Consider this text: 

my $text = " 
$sub24835->($sub24839->($sub24828->($sub24840->("( a1"),$sub24841->(" 
+a1 ) ")),$sub24830->($sub24853->("( a2 "),$sub24854->(" a2 )")),$sub2
+4828->($sub24840->("( a1"),$sub24841->(" a1 ) ")),$sub24842->($sub248
+43->("0"),$sub24830->($sub24853->("( a2 "),$sub24854->(" a2 )")),$sub
+24828->($sub24840->("( a1"),$sub24841->(" a1 ) "))),$sub24830->($sub2
+4853->("( a2 "),$sub24854->(" a2 )")),$sub24828->($sub24840->("( a1")
+,$sub24841->(" a1 ) ")),$sub24832->($sub24855->("1"),$sub24856->($sub
+24857->("| a3"),$sub24859->("a3 |")),$sub24858->("a3")),$sub24849->($
+sub24850->("1"),$sub24830->($sub24853->("( a2 "),$sub24854->(" a2 )")
+),$sub24832->($sub24855->("1"),$sub24856->($sub24857->("| a3"),$sub24
+859->("a3 |")),$sub24858->("a3"))))) 
";

[download]

I need to find all function call duplicates: something like this:

1. $sub24828->($sub24840->("( a1"),$sub24841->(" a1 ) "))

2. $sub24830->($sub24853->("( a2 "),$sub24854->(" a2 )"))

Both 1. and 2. are occurred more than one time in the text.

I tried to use this regex: 

my @ttt = $ttt =~ /(\$sub\d+->\(.*\))?.*?\1/gs;

[download]

But it is not correct.

The main problem is that I want to extract THE WHOLE function call expression:

$sub111->(...) (it should contain BOTH opening AND closing parentheses).

See extracted examples above.

Thanks in advance.

In reply to Help!!! How to find duplicates? by stylerr

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