File: compare.C

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#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>

int compare( const void *a, const void *b )
{
   char *a_pointer;

   a_pointer = *( char **)a;
   if ( *a_pointer == '"' || *a_pointer == '(' )
      ++a_pointer;

   if ( !strncasecmp( a_pointer, "Re:", 3 ))
      a_pointer += 3;

   a_pointer += strspn( a_pointer, " \t" );
      
   char *b_pointer;

   b_pointer = *( char **)b;
   if ( *b_pointer == '"' || *b_pointer == '(' )
      ++b_pointer;

   if ( !strncasecmp( b_pointer, "Re:", 3 ))
      b_pointer += 3;

   b_pointer += strspn( b_pointer, " \t" );

   return strcasecmp( a_pointer, b_pointer );
}