[Israel.pm] recursive regex

Yossi.Itzkovich at ecitele.com Yossi.Itzkovich at ecitele.com
Wed Jun 9 02:54:04 PDT 2004

I have never used in a while loop same file handle in 2 places at the same
time.  Does it mean that each while manages its own position pointer in the
file ?


                      Shlomo Yona                                                                                                  
                      <shlomo at cs.haifa         To:      Perl in Israel <perl at perl.org.il>                                          
                      .ac.il>                  cc:                                                                                 
                      Sent by:                 Subject: Re: [Israel.pm] recursive regex                                            
                      perl-bounces at per                                                                                             
                      06/09/2004 12:24                                                                                             
                      Please respond                                                                                               
                      to Perl in                                                                                                   

Is this what you have in mind?

while(<DATA>) {
        print_begin_end_macro($1) if /BEGIN_(\S+)/;

sub print_begin_end_macro {
        my ($what)=@_;
        while(<DATA>) {
                if (/END_$what/) {
                        print qq{BEGIN_$what\tEND_$what\n} if /END_$what/;
                print_begin_end_macro($1) if /BEGIN_(\S+)/;


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