$NetBSD: patch-am,v 1.3 2013/03/02 17:51:49 joerg Exp $

--- src/lib/fte/x11.c.orig	1993-04-14 19:44:56.000000000 +0000
+++ src/lib/fte/x11.c
@@ -12,6 +12,7 @@ Author: 1988 Jeffrey M. Hsu
 #ifdef HAS_X11
 
 #  include <sys/time.h>
+#  include <sys/select.h>
 
 #  include "util.h"
 
@@ -39,7 +40,7 @@ extern int _Xdebug;
 /* forward declarations */
 extern void handlebuttonev(), handlekeypressed(), killwin(), hardcopy(),
 	    redraw(), resize();
-int errorhandler();
+static void errorhandler(Display *display, XErrorEvent *errorev);
 
 #define RAD_TO_DEG	(180.0 / M_PI)
 
@@ -62,6 +63,12 @@ typedef struct x11info {
 #define DEVDEP(g) (*((X11devdep *) (g)->devdep))
 
 static void linear_arc( );
+static void initlinestyles( );
+static void initcolors( );
+static void X_ScreentoData( );
+
+static void slopelocation(GRAPH *graph, int x0, int y0);
+
 static Display *display;
 static GC xorgc;
 static char *xlinestyles[NUMLINESTYLES] = {	/* test patterns XXX */
@@ -145,10 +152,8 @@ X11_Init()
 
 }
 
-int
-errorhandler(display, errorev)
-Display *display;
-XErrorEvent *errorev;
+static void
+errorhandler(Display *display, XErrorEvent *errorev)
 {
 	XGetErrorText(display, errorev->error_code, ErrorMessage, 1024);
 	externalerror(ErrorMessage);
@@ -302,7 +307,7 @@ GRAPH *graph;
 	return (0);
 }
 
-static
+static void
 initlinestyles()
 {
 
@@ -318,7 +323,7 @@ initlinestyles()
 	return;
 }
 
-static
+static void
 initcolors(graph)
     GRAPH *graph;
 {
@@ -405,9 +410,7 @@ int x1, y1, x2, y2;
 }
 
 /*ARGSUSED*/
-X11_Arc(x0, y0, radius, theta1, theta2)
-int x0, y0, radius;
-double theta1, theta2;
+void X11_Arc(int x0, int y0, int radius, double theta1, double theta2)
 {
 
     int	t1, t2;
@@ -612,9 +615,7 @@ caddr_t clientdata, calldata;
 }
 #  endif
 
-slopelocation(graph, x0, y0)
-GRAPH *graph;
-int x0, y0;         /* initial position of mouse */
+static void slopelocation(GRAPH *graph, int x0, int y0)
 {
 
 	int x1, y1;
@@ -773,12 +774,15 @@ GRAPH *graph;
 	        graph->commandline, fx0, fx1, fy0, fy1);
 	}
 
+/* don't use the following if using GNU Readline - AV */
+#ifndef HAS_GNUREADLINE
 	/* hack for Gordon Jacobs */
 	/* add to history list if plothistory is set */
 	if (cp_getvar("plothistory", VT_BOOL, (char *) &dummy)) {
 	  wl = cp_parse(buf);
 	  (void) cp_addhistent(cp_event++, wl);
 	}
+#endif /* HAS_GNUREADLINE */
 
 	(void) cp_evloop(buf);
 
@@ -915,13 +919,12 @@ static int inchar(fp)
 }
 #  endif
 
-X11_Input(request, response)
-    REQUEST *request;
-    RESPONSE *response;
+void X11_Input(REQUEST *request, RESPONSE *response)
 {
 
 	XEvent ev;
-	int nfds, readfds;
+	int nfds;
+	fd_set readfds;
 
 	switch (request->option) {
 	  case char_option:
@@ -938,14 +941,15 @@ X11_Input(request, response)
 	        XtDispatchEvent(&ev);
 	      }
 
-	      readfds = 1 << fileno(request->fp) |
-	            1 << ConnectionNumber(display);
+              FD_ZERO(&readfds);
+	      FD_SET(fileno(request->fp), &readfds);
+	      FD_SET(ConnectionNumber(display), &readfds);
 
 	      /* block on ConnectionNumber and request->fp */
-	      select(nfds + 1, &readfds, (int *) NULL, (int *) NULL, NULL);
+	      select(nfds + 1, &readfds, NULL, NULL, NULL);
 
 	      /* handle X events first */
-	      if (readfds & (1 << ConnectionNumber(display))) {
+	      if (FD_ISSET(ConnectionNumber(display),&readfds)) {
 		    /* handle ALL X events */
 		    while (XtPending()) {
 			  XtNextEvent(&ev);
@@ -953,7 +957,7 @@ X11_Input(request, response)
 		    }
 	      }
 
-	      if (readfds & (1 << fileno(request->fp))) {
+	      if (FD_ISSET(fileno(request->fp), &readfds)) {
 		    response->reply.ch = inchar(request->fp);
 		    goto out;
 	      }
@@ -995,10 +999,11 @@ out:
 
 }
 
-static X_ScreentoData(graph, x, y, fx, fy)
-GRAPH *graph;
-int x,y;
-double *fx, *fy;
+static void
+X_ScreentoData(graph, x, y, fx, fy)
+    GRAPH *graph;
+    int x,y;
+    double *fx, *fy;
 {
 	double	lmin, lmax;