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From:	culliton@srg.af.mil (Tom Culliton x2278)
X-Mailer: SCO System V Mail (version 3.2)
To:	cks@hawkwind.utcs.toronto.edu, rc@hawkwind.utcs.toronto.edu
Subject: Re: /pub/rc/rc-1.5betadev-1.tar.gz now on ftp.sys.utoronto.ca
Date:	Mon, 7 Mar 1994 14:40:00 -0500
Message-Id: <9403071440.aa07845@ceres.srg.af.mil>

I forwarded these patches for the readline support to Byron two months
ago but never heard back.  (Possibly an email glitch, or merely that
Byron fell (or was pushed) off the face of the planet again ;-) )  If
you link in readline without these patches, 1) readline doesn't handle
certain signals (e.g. SIGINT) gracefully, 2) trip.rc will fail to
complete successfully.

	From culliton Wed Jan 12 16:36:18 1994
	From: culliton@srg.af.mil (Tom Culliton x2278)
	To: byron@ghoti.netapp.com
	Subject: Re: rc patches halfway to 1.5
	Date: Wed, 12 Jan 94 16:36:18 EST
	Status: RO
	
	> Hm. I don't know about (1), I will have to look through my mail.
	> With regard to (2), could you please let me know which patches
	> are missing so I could put them in?
	
	Sorry this took so long, too many balls in the air and something tends
	to get dropped, as you probably know.  Here's at least one patch that
	was missing.  Without the patch and with readline linked in trip will
	fail when it checks prompting.
	
	Tom
	
	*** input.c~	Mon Jan 10 11:37:57 1994
	--- input.c	Wed Jan 12 16:18:30 1994
	***************
	*** 121,127 ****
	  		while (1) {
	  #ifdef READLINE
	  			if (interactive && istack->fd == 0) {
	! 				rlinebuf = readline(prompt);
	  				if (rlinebuf == NULL) {
	  					chars_in = 0;
	  				} else {
	--- 121,127 ----
	  		while (1) {
	  #ifdef READLINE
	  			if (interactive && istack->fd == 0) {
	! 				rlinebuf = rc_readline(prompt);
	  				if (rlinebuf == NULL) {
	  					chars_in = 0;
	  				} else {
	***************
	*** 279,288 ****
	  			}
	  			if ((s = varlookup("prompt")) != NULL) {
	  #ifdef READLINE
	! 				prompt = s->w;
	! #else
	! 				fprint(2, "%s", s->w);
	  #endif
	  				prompt2 = (s->n == NULL ? "" : s->n->w);
	  			}
	  		}
	--- 279,289 ----
	  			}
	  			if ((s = varlookup("prompt")) != NULL) {
	  #ifdef READLINE
	! 				if (istack->fd == 0)
	! 					prompt = s->w;
	! 				else
	  #endif
	+ 					fprint(2, "%s", s->w);
	  				prompt2 = (s->n == NULL ? "" : s->n->w);
	  			}
	  		}
	***************
	*** 302,307 ****
	--- 303,321 ----
	  	unexcept(); /* eError */
	  	return parsetree;
	  }
	+ 
	+ extern void print_prompt2() {
	+ 	lineno++;
	+ 	if (interactive)
	+ 	{
	+ #ifdef READLINE
	+ 		if (istack->fd == 0)
	+ 			prompt = prompt2;
	+ 		else
	+ #endif
	+ 			fprint(2, "%s", prompt2);
	+ 	}
	+ }
	  
	  /* parse a function imported from the environment */
	  
	*** lex.c~	Mon Jan 10 11:37:58 1994
	--- lex.c	Wed Jan 12 16:18:19 1994
	***************
	*** 336,351 ****
	  		realbuf = ealloc(bufsize);
	  }
	  
	- extern void print_prompt2() {
	- 	lineno++;
	- #ifdef READLINE
	- 	prompt = prompt2;
	- #else
	- 	if (interactive)
	- 		fprint(2, "%s", prompt2);
	- #endif
	- }
	- 
	  /*
	     Scan in a pair of integers for redirections like >[2=1]. CLOSED represents a closed file
	     descriptor (i.e., >[2=]) and UNSET represents an undesignated file descriptor (e.g.,
	--- 336,341 ----