http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/ports/gen/www/httrack/files/
        patch-jc.httrack-3.47.21.REL=9.2-RELEASE.cust_rel
by jhs@@berklix.com

No need to patch src/htscoremain.c case 'y'

*** src/httrack.c.orig	Wed Jun 19 20:23:35 2013
--- src/httrack.c	Tue Jan 28 01:53:25 2014
***************
*** 197,208 ****
--- 197,236 ----
  static int use_show;
  static httrackp *global_opt = NULL;
  
+ int background_on_suspend = 0 ;
+ 	/*
+ 	 * Leave at 0, if you want Normal Unix behaviour
+ 	 * of Suspend signal suspending a process.
+ 	 * Set to 1, if you want the old httrack behaviour
+ 	 * (at 3.45.3)
+ 	 * of dropping process into background.         *******************
+ 	 *   Dropping to background may pain, eg jhs@@berklix.com noted:
+ 	 *   Httrack sucked the performance out of my (jhs@@berklix.com)
+ 	 *   DSL coms link even with httrack rate limiting enabled.
+ 	 *   Browsers timed out, I could not temporarily suspend long
+ 	 *   runnning httrack processes, to let browsers recover &
+ 	 *   humans to get some urgent work done. (There were also
+ 	 *   sometimes eg 2 httracks, 1 on each of 2 internal hosts,
+ 	 *   both sucking different parts of the net, through 1 common
+ 	 *   busy gateway, & although both rate limited, browsers still
+ 	 *   timed out.
+ 	 */
+ 
  static void signal_handlers(void);
+ static void signal_restore_ctl_z(void);
  
  int main(int argc, char **argv) {
    int ret = 0;
    httrackp *opt;
  
+   // Change from Xaviers default On to Off !!!
+   // otherwise it defaults to both capture & background on ^Z, which
+   // is not consistent with Unix expectations, & a Pain when one wants
+   // to temporarily suspend an httrack that is sucking the net link
+   // dry & get some decent interactive net performance for a human for
+   // a while, before letting httrack resume hoging most of bandwidth
+   // again later.
+ 
  #ifdef _WIN32
    {
      WORD wVersionRequested;     // requested version WinSock API
***************
*** 250,255 ****
--- 278,287 ----
    CHAIN_FUNCTION(opt, sendhead, htsshow_sendheader, NULL);
    CHAIN_FUNCTION(opt, receivehead, htsshow_receiveheader, NULL);
  
+   signal_restore_ctl_z();	// This must be after parameters get parsed.
+ 				// (But I do not know this code to know
+ 				//  if that's now.)
+ 
    ret = hts_main2(argc, argv, opt);
    if (ret) {
      fprintf(stderr, "* %s\n", hts_errmsg(opt));
***************
*** 783,788 ****
--- 815,821 ----
  #else
  static void sig_doback(int blind);
  static void sig_back(int code) {        // ignorer et mettre en backing 
+ 					// Ignore and Background the process.
    if (global_opt != NULL && !global_opt->background_on_suspend) {
      signal(SIGTSTP, SIG_DFL);   // ^Z
      printf("\nInterrupting the program.\n");
***************
*** 795,800 ****
--- 828,839 ----
    }
  }
  
+ static void signal_restore_ctl_z(void) {
+ #ifndef _WIN32
+    if (background_on_suspend) signal( SIGTSTP , sig_back ); // ^Z
+ #endif
+    }
+ 
  #if 0
  static void sig_ask(int code) { // demander
    char s[256];
***************
*** 889,895 ****
  #if 0                           /* BUG366763 */
    signal(SIGHUP, sig_back);     // close window
  #endif
!   signal(SIGTSTP, sig_back);    // ^Z
    signal(SIGTERM, sig_finish);  // kill <process>
  #if 0                           /* BUG366763 */
    signal(SIGINT, sig_ask);      // ^C
--- 928,937 ----
  #if 0                           /* BUG366763 */
    signal(SIGHUP, sig_back);     // close window
  #endif
! 	// Original author has next line uncommented,
! 	// but that is Not Unix standard.
! 	// Principle of least suprise requires this Off by default.
!   // signal(SIGTSTP, sig_back);    // ^Z
    signal(SIGTERM, sig_finish);  // kill <process>
  #if 0                           /* BUG366763 */
    signal(SIGINT, sig_ask);      // ^C

*** src/htslib.c.orig	Tue Jan 28 01:02:57 2014
--- src/htslib.c	Tue Jan 28 01:03:15 2014
***************
*** 5541,5547 ****
    opt->makeindex = 1;           // faire un index
    opt->kindex = 0;              // index 'keyword'
    opt->delete_old = 1;          // effacer anciens fichiers
!   opt->background_on_suspend = 1;       // Background the process if Control Z calls signal suspend.
    opt->makestat = 0;            // pas de fichier de stats
    opt->maketrack = 0;           // ni de tracking
    opt->timeout = 120;           // timeout par défaut (2 minutes)
--- 5541,5547 ----
    opt->makeindex = 1;           // faire un index
    opt->kindex = 0;              // index 'keyword'
    opt->delete_old = 1;          // effacer anciens fichiers
!   opt->background_on_suspend = 0;       // Background the process if Control Z calls signal suspend.
    opt->makestat = 0;            // pas de fichier de stats
    opt->maketrack = 0;           // ni de tracking
    opt->timeout = 120;           // timeout par défaut (2 minutes)