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-rw-r--r--sys/src/cmd/rio/rio.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/sys/src/cmd/rio/rio.c b/sys/src/cmd/rio/rio.c
index 458d26d34..13c9e29eb 100644
--- a/sys/src/cmd/rio/rio.c
+++ b/sys/src/cmd/rio/rio.c
@@ -392,16 +392,15 @@ whichrect(Rectangle r, Point p, int which)
int
portion(int x, int lo, int hi)
{
- int t;
x -= lo;
hi -= lo;
- t = min(20, max(1, hi/2));
- if(hi < t)
- return x > 0 ? 2 : 0;
- if(x < t)
- return 0;
- if(x > hi-t)
- return 2;
+ if(x < hi/2){
+ if(x < 20)
+ return 0;
+ } else {
+ if(x > hi-20)
+ return 2;
+ }
return 1;
}