Reproduce cucumber/common#771

+ Add a plain file that matches what @akostadinov described.
+ Add a empty file based on @mikz's instructions.

Gemfile

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+source 'https://rubygems.org/'
+
+gem 'cucumber', '>= 2.0.0.beta.3'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    builder (3.2.2)
+    cucumber (2.0.0.beta.3)
+      builder (>= 2.1.2)
+      cucumber-core (~> 1.0.0.beta.3)
+      diff-lcs (>= 1.1.3)
+      gherkin (~> 2.12)
+      multi_json (>= 1.7.5, < 2.0)
+      multi_test (>= 0.1.1)
+    cucumber-core (1.0.0.beta.3)
+      gherkin (~> 2.12.0)
+    diff-lcs (1.2.5)
+    gherkin (2.12.2)
+      multi_json (~> 1.3)
+    multi_json (1.10.1)
+    multi_test (0.1.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  cucumber (>= 2.0.0.beta.3)

README.md

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+# Reproduction for [#771](https://github.com/cucumber/cucumber/issues/771)
+An example use case that reproduces cucumber/cucumber#771. The file `nested.feature` has valid Gherkin while the file `buckets.feature` is empty.
+
+The following usages of cucumber fail with or without the `--tags` option. These all load the empty file [features/api/buckets.feature](features/api/buckets.feature).
+
+## Failing
+* `cucumber`
+* `cucumber --tags @pry`
+* `cucumber features/api/`
+* `cucumber features/api/buckets.feature`
+
+## Passing
+* `cucumber --exclude features/api/buckets.feature`
+* `cucumber --exclude features/subdirectory/nested.feature`

features/subdirectory/nested.feature

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+@pry
+Feature: A nested file
+  As a Cucumber user
+  I want to use subdirectories
+  So that I can better organize my feature files
+
+  Scenario: A plain-old scenario
+    Given I have a feature file
+    And I wrote a scenario
+    When I run `cucumber features/subdirectory/nested.feature`
+    Then I should see cucumber run successfully

features/subdirectory/step_definitions/nested_steps.rb

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+Given(/^I have a feature file$/) do
+end
+
+Given(/^I wrote a scenario$/) do
+end
+
+When(/^I run `cucumber features\/subdirectory\/nested\.feature`$/) do
+end
+
+Then(/^I should see cucumber run successfully$/) do
+end