Basically Corion's approach, but uses the  \K operator available from Perl version 5.10 on: 

c:\@Work\Perl\monks>perl -wMstrict -le
"use 5.010;
 ;;
 my $str = qq{Wal-mart talks about its Significant Accounting Policies
+ in its 10k. \n}
         . qq{Significant Accounting Policies are important for a firm
+. \n}
         . qq{Here is a list of the Significant Accounting Policies \n
+}
         . qq{1)Lifo \n}
         . qq{2)Depreciation \n}
         . qq{3)Expenses \n}
         ;
 print qq{<<$str>> \n};
 ;;
 my $sap = qr{ Significant \s+ Accounting \s+ Policies }xms;
 ;;
 my ($end_sap) = $str =~ m{ .* $sap \K .* }xmsg;
 print qq{<<$end_sap>> \n};
"
<<Wal-mart talks about its Significant Accounting Policies in its 10k.
Significant Accounting Policies are important for a firm.
Here is a list of the Significant Accounting Policies
1)Lifo
2)Depreciation
3)Expenses
>>

<<
1)Lifo
2)Depreciation
3)Expenses
>>

[download]
Please see perlre, perlretut, and perlrequick.

Update: On second thought, I think I would write the statement
    my ($end_sap) = $str =~ m{ .* $sap \K .* }xmsg;
as something like
    my $sap_at_end = my ($end_sap) = $str =~ m{ .* $sap \K .* }xmsg;
so that the success of the match will be separately captured. This allows a 

    if ($sap_at_end) {
        do_something_with($end_sap);
        }
    else {
        ...    
        }

[download]
block to follow the match to let you handle any eventuality. I might also think about changing the  $sap \K sequence to  $sap \s* \K to consume any whitespace that might follow the  $sap pattern before the "real" text begins.

Give a man a fish:  <%-{-{-{-<

In reply to Re: Take last instance of a string by AnomalousMonk
in thread Take last instance of a string by porsche5k

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