do not use paren in clock()

bashrc

@@ -249,17 +249,15 @@ fi
 alias setup.py="sudo python3 setup.py install --record files.txt"
 
 clock(){
-    (
-        local tformat="%Y/%m/%d %H:%M:%S %z"
-        local t=
-        cal
-        while true
-        do
-            t="`date "+${tformat}"`"
-            printf "\\r$t"
-            sleep 1
-        done
-    )
+    local tformat="%Y/%m/%d %H:%M:%S %z"
+    local t=
+    cal
+    while true
+    do
+        t="`date "+${tformat}"`"
+        printf "\\r$t"
+        sleep 1
+    done
 }
 
 man(){