updated for version 7.3.748
Problem:    Cannot properly test conceal mode.
Solution:   Add the screencol() and screenrow() functions.  Use them in
            test88. (Simon Ruderich)
diff --git a/src/testdir/test88.ok b/src/testdir/test88.ok
new file mode 100644
index 0000000..e726258
--- /dev/null
+++ b/src/testdir/test88.ok
@@ -0,0 +1,23 @@
+end:
+2:1
+2:17
+2:20
+3:1
+3:17
+3:20
+5:8
+5:25
+5:28
+6:8
+6:25
+6:28
+8:1
+8:9
+8:17
+8:25
+8:27
+9:1
+9:9
+9:17
+9:25
+9:26