shithub: map

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adds early checks

--- a/map.c

+++ b/map.c

@@ -27,6 +27,13 @@

 	va_end(args);

 }

+static void

+runchecks(void)

+{

+	if (access("/mnt/map/0", AEXIST) < 0)

+		sysfatal("/mnt/map does not exist: %r");

+}

+

 NWindow *mainwindow;

 NImage *nimage;

@@ -223,6 +230,8 @@

 	case 'd':

 		debug++;

 	}ARGEND;

+	

+	runchecks();

 	if (debug)

 		traperrout();