Fossil

        int needQuote;
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char q = ((xtype==etSQLESCAPE3)?'"':'\'');  /* Quote characters */
        char *escarg = va_arg(ap,char*);
        isnull = escarg==0;
        if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
        if( limit<0 ) limit = strlen(escarg);
        if( precision>=0 && precision<limit ) limit = precision;
        for(i=n=0; i<limit; i++){
          if( escarg[i]==q )  n++;
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 1 + needQuote*2;
        if( n>etBUFSIZE ){
          bufpt = zExtra = fossil_malloc( n );
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = q;
        for(i=0; i<limit; i++){
          bufpt[j++] = ch = escarg[i];
          if( ch==q ) bufpt[j++] = ch;
        }
        if( needQuote ) bufpt[j++] = q;
        bufpt[j] = 0;
        length = j;
        if( precision>=0 && precision<length ) length = precision;
        break;
      }
      case etHTMLIZE: {
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char *zMem = va_arg(ap,char*);
        if( zMem==0 ) zMem = "";
        zExtra = bufpt = htmlize(zMem, limit);