The statement: 'The code below, in Perl 5.8.8 and 5.10.9 prints 1\n three times' is incorrect and confusing... I'm guessing you are confusing the different versions of perl...
Running 'the code below':
- Perl version: 5.006
Use of uninitialized value in print at t.pl line 24.
Undefined subroutine &main::_ called at t.pl line 28.
- Perl version: 5.008
Use of -l on filehandle _ at t.pl line 24.
Use of uninitialized value in print at t.pl line 24.
Undefined subroutine &main::_ called at t.pl line 28.
- Perl version: 5.008008
Use of -l on filehandle _ at t.pl line 24.
Use of uninitialized value in print at t.pl line 24.
Undefined subroutine &main::_ called at t.pl line 28.
- Perl version: 5.008009
Use of -l on filehandle _ at t.pl line 24.
Use of uninitialized value in print at t.pl line 24.
Undefined subroutine &main::_ called at t.pl line 28.
- Perl version: 5.010000
1
1
1
- Perl version: 5.011003
1
1
1
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