if ($line =~ /^Parsing \[(sent. \d+) len. \d+\]: \[(.+)\]
+/) {
                 #$one_match_ref->[1] = $1; ##Multiple in file
                 #$one_match_ref->[2] = $2;
                 #$one_match_ref->[2] =~ s/,//g;
                 my $nocomma_sent = $2;
                 $nocomma_sent =~ s/,//g;
                 push( @{$one_match_ref}, $1, $nocomma_sent);
             }

[download]

This might be the source of one of your uninitialized values.

See perlre for details of the match variables ($1, $2, etc.). The important thing here is that these variables are reset by the next successful match. If your substitution to remove commas finds any, then it is a successful match, after which $1 and $2 are reset to undef. Thus, if $nocomma_sent has any commas in it, when you push $1 onto your array you will be pushing undef.

One way to avoid this is to push $1 before performing the substituion:

             if ($line =~ /^Parsing \[(sent. \d+) len. \d+\]: \[(.+)\]
+/) {
                 push( @{$one_match_ref}, $1);
                 my $nocomma_sent = $2;
                 $nocomma_sent =~ s/,//g;
                 push( @{$one_match_ref}, $nocomma_sent);
             }

[download]

In reply to Re^3: Error: Use of uninitialized value $item in concatenation (.) or string at... by ig
in thread Error: Use of uninitialized value $item in concatenation (.) or string at... by jonc

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