shithub: pplay

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fix prompt drawing issues by just locking display

without this, with nil argument for screen drawing just
paints over the prompt; with _screen as argument, it
works most of the time, then sometimes stops redrawing.
instead, just freeze drawing while the prompt is on;
no other user interaction is possible in the mean time
anyway.

--- a/pplay.c

+++ b/pplay.c

@@ -106,15 +106,17 @@

 static char *

 prompt(Rune r)

 {

+	int n;

 	Rune q;

 	static char buf[512];

 	chartorune(&q, buf);

 	if(q != r)

-          snprint(buf, sizeof buf, "%C", r);

-	if(enter("cmd:", buf, sizeof(buf)-UTFmax, mc, kc, _screen) < 0)

-		return nil;

-	return buf;

+		snprint(buf, sizeof buf, "%C", r);

+	lockdisplay(display);

+	n = enter("cmd:", buf, sizeof(buf)-UTFmax, mc, kc, nil);

+	unlockdisplay(display);

+	return n < 0 ? nil : buf;

 }

 static void