To: Winston Edmond <wbe@_ERASE_shore.net>
cc: Gerhard Niklasch <nikl@_ERASE_mathematik.tu-muenchen.de>,
	"John Kilburg" <john@_ERASE_cs.unlv.edu>
	
Hi Winston Edmond
cc Gerhard Niklasch, John Kilburg

I append 2 sets of patches, 1 for for both chimera 1.70 
(& 1 for 1.65 hashed out, as sent long ago to John K I think.),
they implement a SIGHUP/redisplay/wysiwyg sort of linkage with vi
or whatever other editor you might want, (subject to hacking editor)
As Gerhard is also in Munich I could do a demo here in the city centre some
time if you want. (I have similar SIGHUPS for xfig & ghostview too &
a make macro pack for FreeBSD)
more info is in
http://.............../~jhs/src/bsd/fixes/FreeBSD/src/gen/contrib/nvi/wysiwyg.multi_linked.ignore

PS thanks for coming out with 1.70,
( it was getting tedious using 1.65 without frames :-)
============

For chimera-1.70p0
Document my Wysiwyg hook : `reload on signal'

*** src/chimera.man.orig	Sat Mar  4 08:54:37 1995
--- src/chimera.man	Fri Oct  2 00:27:44 1998
***************
*** 6,11 ****
--- 6,13 ----
  
  .SH SYNOPSIS
  .B chimera
+ [\-s] [\-p]
+ .\" should later extend to allow ghostview syntax: [\-[no]reopen_sig] [\-[no]pid_report]
  .RI [ URL ]
  
  .SH DESCRIPTION
***************
*** 22,27 ****
--- 24,59 ----
  The usual Xt options like geometry can also be specified on the command
  line.
  
+ .SH OPTIONS
+ .IP "\fB-p (\fPclass\fB pidReport)\fP" 1i
+ .\" should later extend to allow ghostview syntax: .IP "\fBpid_report (\fPclass\fB PidReport)\fP" 1i
+ .\" added by Julian H. Stacey <jhs@
+ Prints the process number on startup.
+ Usually used with 
+ .\" \fBreopen_sig\fP.
+ \fB-s\fP.
+ The default value is ``false''.
+ .\"
+ .IP "\fB-s (\fPclass\fB reopenSig)\fP" 1i
+ .\" should later extend to allow ghostview syntax: .IP "\fBreopen_sig (\fPclass\fB ReopenSig)\fP" 1i
+ Accept SIGUSR1 as a signal requesting reload (& thus redisplay).
+ Usually used with 
+ .\" \fBpid_report\fP.
+ \fB-p\fP.
+ The default value is ``false''.
+ .br
+ These hooks 
+ .\" \fBpid_report\fP 
+ \fB-p\fP 
+ & 
+ .\" \fBreopen_sig\fP
+ \fB-s\fP
+ were added to work with \fBvi -C\fP.
+ All three together when used correctly, allow for example:
+ a vi edit xterm of a source to be run
+ alonside a chimera display, so that every time the vi file is written,
+ the html file is [regenerated from master sources if appropriate , &] redisplayed automatically.
+ 
  .SH RESOURCES
  The following resources are Chimera specific resources:
  
***************
*** 41,46 ****
--- 73,82 ----
  .IP "\fBprotocolFiles\fP"
  
  .IP "\fBmailCapFiles\fP"
+ 
+ .IP "\fBreopenSig\fP"
+ 
+ .IP "\fBpidReport\fP"
  
  .SH "SEE ALSO"
  lynx(1), Mosaic(1)
*** src/main.c.orig	Wed May  7 14:48:18 1997
--- src/main.c	Fri Oct  2 00:11:40 1998
***************
*** 193,198 ****
--- 193,202 ----
  	offset(openButtonShortcut), XtRImmediate, (XtPointer)True },
    { "localIndexFiles", "LocalIndexFiles", XtRString, sizeof(char *),
  	offset(localIndexFiles), XtRString, (XtPointer)"index.html" },
+   { "reopenSig", XtCBoolean, XtRBoolean, sizeof(Boolean),
+ 	offset(reopenSig), XtRImmediate, (XtPointer)False },
+   { "pidReport", XtCBoolean, XtRBoolean, sizeof(Boolean),
+ 	offset(pidReport), XtRImmediate, (XtPointer)False },
  };
  
  static XtActionsRec actionsList[] =
***************
*** 236,241 ****
--- 240,247 ----
    char path[MAXPATHLEN + 1];
    char *cwd;
    Atom delete;
+   int ch ;
+   extern int optind;
  
  #ifdef SOCKS
    SOCKSinit(argv[0]);
***************
*** 252,262 ****
--- 258,328 ----
    signal(SIGALRM, SIG_IGN);	/* changed when necessary in src/net.c */
    signal(SIGPIPE, SIG_IGN);
  
+   while ((ch = getopt(argc, argv, "sp")) != EOF)
+     switch(ch) 
+       {
+       case 's':	/* should extend this to accept --[no]reopen_sig 
+ 			as in ghostview */
+         /* reload on SIGUSR1 */
+         root.reopenSig = True ;
+         break;
+       case 'p': /* should extend this to accept --[no]pid_report 
+ 			as in ghostview */
+         /* print process number */
+         root.pidReport = True ;
+         break;
+       case '?':
+       default:
+         /* usage(); */
+         exit(-1);
+         break;
+       }
+   /* optind starts at 1, thus with chmimera -s -p fred.html optind=3 */
+   argc -= (optind -1) ;
+   *(argv + (optind -1)) = *argv  ; /* copy "chimera" for display above window */
+   argv += (optind -1) ;
+ 
+   /* Ignore any unexpectedly early SIGUSR1, though as we've not reported
+    * our process id yet, it'll be hard for someone to find, except with
+    * ps(1). 
+    */
+   if (root.reopenSig) signal(SIGUSR1,SIG_IGN);
+ 
    StartReaper();
  
    root.toplevel = XtAppInitialize(&(root.appcon), "Chimera", NULL, 0,
  				  &argc, argv, fallback_resources, NULL, 0);
    if (root.toplevel == 0) exit(1);
+ 
+ /* I would like to do the following
+  *		if (root.reopenSig == True) and 
+  *		if (root.pidReport == True)
+  *       much later, in case there is some more 
+  *       initialising that chimera wants to do, but using xxgdb I 
+  *       determined that the call to XtGetApplicationResources zeroes 
+  *		root.reopenSig and root.pidReport
+  */
+   if (root.reopenSig == True)
+     {
+     signal(SIGUSR1,ReloadAction) ;
+     /* Set signal handling  before printing process number, so no one
+      * can send a an unexpectd SIGUSR1 that would kill us.
+      * I put off accepting first signal while ghostview is presumably
+      * initialising stuff that maybe needed for the resize function
+      * (that I never wrote, merely grabbed shared use of).
+      # I also presume there's not much advantage to accepting
+      * a SIGUSR1 reopen till now.
+      */
+     }
+   if (root.pidReport == True)
+     {
+     printf("%d\n",(int)(getpid()));
+     /* Before I added the flush, when I called this from a makefile,
+      * with a vi process about to start, (needing the signal number)
+      the pid was printed too late.
+      */
+     fflush(stdout);
+     }
  
    /*
     * Grab up the resources.
*** src/widget.h.orig	Fri Apr 18 13:18:38 1997
--- src/widget.h	Fri Oct  2 00:13:07 1998
***************
*** 68,73 ****
--- 68,75 ----
    Boolean cacheIgnoreExpires;
    Boolean openButtonShortcut; /* enable foo.com -> http://foo.com/ shortcut */
    char *localIndexFiles; /* look for index.html etc. in local directories */
+   Boolean reopenSig;
+   Boolean pidReport;
  
    /*
     * Private data
#==============================
#	BELOW IS APPENDED THE OLD EQUIVALENT FOR CHIMERA-1.65
#	
#	*** src/chimera.man.orig	Sun Jun 18 12:41:48 1995
#	--- src/chimera.man	Sun Jun 18 16:14:09 1995
#	***************
#	*** 6,11 ****
#	--- 6,13 ----
#	  
#	  .SH SYNOPSIS
#	  .B chimera
#	+ [\-s] [\-p]
#	+ .\" should later extend to allow ghostview syntax: [\-[no]reopen_sig] [\-[no]pid_report]
#	  .RI [ URL ]
#	  
#	  .SH DESCRIPTION
#	***************
#	*** 22,27 ****
#	--- 24,59 ----
#	  The usual Xt options like geometry can also be specified on the command
#	  line.
#	  
#	+ .SH OPTIONS
#	+ .IP "\fB-p (\fPclass\fB pidReport)\fP" 1i
#	+ .\" should later extend to allow ghostview syntax: .IP "\fBpid_report (\fPclass\fB PidReport)\fP" 1i
#	+ .\" added by Julian H. Stacey <jhs@
#	+ Prints the process number on startup.
#	+ Usually used with 
#	+ .\" \fBreopen_sig\fP.
#	+ \fB-s\fP.
#	+ The default value is ``false''.
#	+ .\"
#	+ .IP "\fB-s (\fPclass\fB reopenSig)\fP" 1i
#	+ .\" should later extend to allow ghostview syntax: .IP "\fBreopen_sig (\fPclass\fB ReopenSig)\fP" 1i
#	+ Accept SIGUSR1 as a signal requesting reload (& thus redisplay).
#	+ Usually used with 
#	+ .\" \fBpid_report\fP.
#	+ \fB-p\fP.
#	+ The default value is ``false''.
#	+ .br
#	+ These hooks 
#	+ .\" \fBpid_report\fP 
#	+ \fB-p\fP 
#	+ & 
#	+ .\" \fBreopen_sig\fP
#	+ \fB-s\fP
#	+ were added to work with \fBvi -C\fP.
#	+ All three together when used correctly, allow for example:
#	+ a vi edit xterm of a source to be run
#	+ alonside a chimera display, so that every time the vi file is written,
#	+ the html file is [regenerated from master sources if appropriate , &] redisplayed automatically.
#	+ 
#	  .SH RESOURCES
#	  The following resources are Chimera specific resources:
#	  
#	***************
#	*** 41,46 ****
#	--- 73,82 ----
#	  .IP "\fBprotocolFiles\fP"
#	  
#	  .IP "\fBmailCapFiles\fP"
#	+ 
#	+ .IP "\fBreopenSig\fP"
#	+ 
#	+ .IP "\fBpidReport\fP"
#	  
#	  .SH "SEE ALSO"
#	  lynx(1), Mosaic(1)
#	*** src/main.c.orig	Sat Apr  1 03:45:19 1995
#	--- src/main.c	Wed Jun 21 09:48:16 1995
#	***************
#	*** 183,188 ****
#	--- 183,192 ----
#	  	offset(cacheIgnoreExpires), XtRImmediate, (XtPointer)False },
#	    { "gammaCorrect", "GammaCorrect", XtRFloat, sizeof(float),
#	  	offset(gamma), XtRImmediate, (XtPointer)0 },
#	+   { "reopenSig", XtCBoolean, XtRBoolean, sizeof(Boolean),
#	+ 	offset(reopenSig), XtRImmediate, (XtPointer)False },
#	+   { "pidReport", XtCBoolean, XtRBoolean, sizeof(Boolean),
#	+ 	offset(pidReport), XtRImmediate, (XtPointer)False },
#	  };
#	  
#	  static XtActionsRec actionsList[] =
#	***************
#	*** 225,230 ****
#	--- 229,236 ----
#	    char path[MAXPATHLEN + 1];
#	    char *cwd;
#	    Atom delete;
#	+   int ch ;
#	+   extern int optind;
#	  
#	  #ifdef SOCKS
#	    SOCKSinit(argv[0]);
#	***************
#	*** 241,251 ****
#	--- 247,317 ----
#	    signal(SIGTERM, sigigh_handler);
#	    signal(SIGPIPE, SIG_IGN);
#	  
#	+   while ((ch = getopt(argc, argv, "sp")) != EOF)
#	+     switch(ch) 
#	+       {
#	+       case 's':	/* should extend this to accept --[no]reopen_sig 
#	+ 			as in ghostview */
#	+         /* reload on SIGUSR1 */
#	+         root.reopenSig = True ;
#	+         break;
#	+       case 'p': /* should extend this to accept --[no]pid_report 
#	+ 			as in ghostview */
#	+         /* print process number */
#	+         root.pidReport = True ;
#	+         break;
#	+       case '?':
#	+       default:
#	+         /* usage(); */
#	+         exit(-1);
#	+         break;
#	+       }
#	+   /* optind starts at 1, thus with chmimera -s -p fred.html optind=3 */
#	+   argc -= (optind -1) ;
#	+   *(argv + (optind -1)) = *argv  ; /* copy "chimera" for display above window */
#	+   argv += (optind -1) ;
#	+ 
#	+   /* Ignore any unexpectedly early SIGUSR1, though as we've not reported
#	+    * our process id yet, it'll be hard for someone to find, except with
#	+    * ps(1). 
#	+    */
#	+   if (root.reopenSig) signal(SIGUSR1,SIG_IGN);
#	+ 
#	    StartReaper();
#	  
#	    root.toplevel = XtAppInitialize(&(root.appcon), "Chimera", NULL, 0,
#	  				  &argc, argv, fallback_resources, NULL, 0);
#	    if (root.toplevel == 0) exit(1);
#	+ 
#	+ /* I would like to do the following
#	+  *		if (root.reopenSig == True) and 
#	+  *		if (root.pidReport == True)
#	+  *       much later, in case there is some more 
#	+  *       initialising that chimera wants to do, but using xxgdb I 
#	+  *       determined that the call to XtGetApplicationResources zeroes 
#	+  *		root.reopenSig and root.pidReport
#	+  */
#	+   if (root.reopenSig == True)
#	+     {
#	+     signal(SIGUSR1,ReloadAction) ;
#	+     /* Set signal handling  before printing process number, so no one
#	+      * can send a an unexpectd SIGUSR1 that would kill us.
#	+      * I put off accepting first signal while ghostview is presumably
#	+      * initialising stuff that maybe needed for the resize function
#	+      * (that I never wrote, merely grabbed shared use of).
#	+      # I also presume there's not much advantage to accepting
#	+      * a SIGUSR1 reopen till now.
#	+      */
#	+     }
#	+   if (root.pidReport == True)
#	+     {
#	+     printf("%d\n",(int)(getpid()));
#	+     /* Before I added the flush, when I called this from a makefile,
#	+      * with a vi process about to start, (needing the signal number)
#	+      the pid was printed too late.
#	+      */
#	+     fflush(stdout);
#	+     }
#	  
#	    /*
#	     * Grab up the resources.
#	*** src/widget.h.orig	Sun Jun 18 14:00:11 1995
#	--- src/widget.h	Sun Jun 18 14:02:00 1995
#	***************
#	*** 65,70 ****
#	--- 65,72 ----
#	    float gamma;
#	    int maxColors; /* maximum colors per inline image */
#	    Boolean cacheIgnoreExpires;
#	+   Boolean reopenSig;
#	+   Boolean pidReport;
#	  
#	    /*
#	     * Private data