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From:mohammad yaseen Date:Fri Jun  9 07:14:46 2006
Subject:%SVf in perl
Hi,
  
  This is one of the error mesage generated by
  Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, PL_subname);
  when we preprocess it the SVf gets replaced as below
         Perl_croak(my_perl, ,"Illegal declaration of subroutine %""_",(my_perl->Isubname));
  
  Can someone tell how SVf format sprecifer prints a string when it is %_?
  
  In another case
     Perl_warn(aTHX_ "%" SVf " s=%p has no shared SV",ST(0),shared);
  it gets replaced to
    Perl_warn(my_perl, ,"%" "_" " s=%p has no shared SV"),(my_perl->Tstack_base)[ax + (0)],shared);
  
  What does "%""_" signifies? Is any special mening for this in perl?How this works?
  
  Yaseen
  
  
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