MFC rev. 1.24-1.25:

test(1) doesn't do shortcut evaluation in its logical operators.

bin/test/test.1

@@ -32,7 +32,7 @@
 .\"     @(#)test.1	8.1 (Berkeley) 5/31/93
 .\" $FreeBSD$
 .\"
-.Dd July 3, 2004
+.Dd July 31, 2006
 .Dt TEST 1
 .Os
 .Sh NAME
@@ -332,3 +332,16 @@ The
 utility implements a superset of the
 .St -p1003.2
 specification.
+.Sh BUGS
+Both sides are always evaluated in
+.Fl a
+and
+.Fl o ,
+unlike in the logical operators of
+.Xr sh 1 .
+For instance, the writable status of
+.Pa file
+will be tested by the following command even though the former expression
+indicated false, which results in a gratuitous access to the file system:
+.Pp
+.Dl "[ -z abc -a -w file ]"