Tweak grap to make it compile silently.

src/cmd/grap/grap.h

@@ -132,6 +132,8 @@ extern	int	pointsize, ps_set;
 #define	min(x,y)	(((x) <= (y)) ? (x) : (y))
 #define	max(x,y)	(((x) >= (y)) ? (x) : (y))
 
+extern	char	*unsharp(char*);
+
 extern	void	yyerror(char *);
 extern void coord_x(Point);
 extern void coord_y(Point);
@@ -202,6 +204,7 @@ extern void plot(Attr *, Point);
 extern void plotnum(double, char *, Point);
 extern void drawdesc(int, Obj *, Attr *, char *);
 extern void next(Obj *, Point, Attr *);
+#define print grapprint
 extern void print(void);
 extern void endstat(void);
 extern void graph(char *);

src/cmd/grap/input.c

@@ -540,7 +540,7 @@ void copy(void)	/* begin input from file, etc. */
 	FILE *fin;
 
 	if (newfile) {
-		if ((fin = fopen(newfile, "r")) == NULL)
+		if ((fin = fopen(unsharp(newfile), "r")) == NULL)
 			ERROR "can't open file %s", newfile FATAL;
 		curfile++;
 		curfile->fin = fin;

src/cmd/grap/main.c

@@ -7,10 +7,11 @@
 #include "grap.h"
 #include "y.tab.h"
 
-extern	char	*unsharp(char*);
-
 int	dbg	= 0;
 
+#ifndef GRAPDEFINES
+#define GRAPDEFINES "#9/sys/lib/grap.defines"
+#endif
 char	*lib_defines;
 
 int	lib	= 1;		/* 1 to include lib_defines */
@@ -40,7 +41,7 @@ main(int argc, char *argv[])
 {
 	extern void onintr(int), fpecatch(int);
 
-	lib_defines = unsharp("#9/lib/grap.defines");
+	lib_defines = unsharp(GRAPDEFINES);
 
 	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
 		signal(SIGINT, onintr);
@@ -90,8 +91,8 @@ main(int argc, char *argv[])
 
 void onintr(int n)
 {
-	//n;
-	if (!dbg)
+	if(n){}
+	if(!dbg)
 		unlink(tempfile);
 	exit(1);
 }

src/cmd/grap/print.c

@@ -184,7 +184,7 @@ void do_first(void)	/* done at first .G1:  definitions, etc. */
 	sprintf(buf, "define pid /%d/\n", getpid());
 	pbstr(buf);	
 	if (lib != 0) {
-		if ((fp = fopen(lib_defines, "r")) != NULL) {
+		if ((fp = fopen(unsharp(lib_defines), "r")) != NULL) {
 			sprintf(buf1, "copy \"%s\"\n", lib_defines);
 			pbstr(buf1);
 			fclose(fp);