Amazing! You're definitely right... I think I have to restructure, all the elements have to stay together. But the all-encompassing if-clauses won't help until I make each sent. number and it's sentence and all the grammar functions one large string...

But if I were to use the push method, the same error persists if I don't put defined??: 
foreach my $line (@lines) {
print "$line\n\n"; ##TEST ONLY##
    foreach my $verbform (@verbforms) {
        my $one_match_ref = [];
         #Chpt. num (Could check %seens):
         if ($line =~ /^Parsing file: (chpt\d+_\d+).txt/) {
             #$one_match_ref->[0] = $1 ; ##Only once in file
             push( @{$one_match_ref}, $1 );
         }
     
        if ($line =~ /\b$verbform\b/i) {
             #Sent. num:
             #SentSentences:
             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, $nocomma_sent);
             }
             #Dependencies:
                  if ($category_id eq "all") {
                if ($line =~ /subj\w*\(|obj\w*\(|prep\w*\(|xcomp\w*\(|
+agent\w*\(|purpcl\w*\(|conj_and\w*\(/) {
                    if ($line =~ /(\w+)\((\w+)\-\d+\,\s(\w+)\-\d+\)/) 
+{
                        #$one_match_ref->[3] = $1;
                          #$one_match_ref->[4] = $2;
                         #$one_match_ref->[5] = $3;
                        push( @{$one_match_ref}, $1, $2, $3 );
                    }
                    
                }
             }
        }
        
        
        # add the reference of match into array.
        push (@all_matches, $one_match_ref);
    }
}

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In reply to Re^2: Error: Use of uninitialized value $item in concatenation (.) or string at... by jonc
in thread Error: Use of uninitialized value $item in concatenation (.) or string at... by jonc

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