add test

test/excl_files.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+TRY_TOP="${TRY_TOP:-$(git rev-parse --show-toplevel --show-superproject-working-tree 2>/dev/null || echo "${0%/*}")}"
+TRY="$TRY_TOP/try"
+
+cleanup() {
+    cd ..
+
+    if [ -d "$try_workspace" ]
+    then
+        echo running
+        rm -rf "$try_workspace" >/dev/null 2>&1
+    fi
+}
+
+trap 'cleanup' EXIT
+
+# try -E fails in /tmp on too many overlays
+try_workspace="$(mktemp -d -p .)"
+
+cd "$try_workspace" || exit 9
+
+touch hidden1
+touch nonhidden2
+
+! "$TRY" -n -E hidden1 ls | grep hidden1