tests: Add test for TW-1883 (#1896)

test/tw-1883.t

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Test for TW-1883 (#1896 on Github)
+# https://github.com/GothenburgBitFactory/taskwarrior/issues/1896
+
+. bash_tap_tw.sh
+
+task add sample
+task +PENDING '(' ')'
+task '(' ')'
+task '(' '(' ')' ')'
+task '(' '(' ')' '(' ')' ')'
+
+# Detect that the task is actually displayed
+task +PENDING '(' ')' | grep sample
+task '(' ')' | grep sample
+task '(' '(' ')' ')' | grep sample
+task '(' '(' ')' '(' ')' ')' | grep sample