ignore bundler/inline from callers

Fixes #1507

lib/sinatra/base.rb

@@ -1168,7 +1168,7 @@ module Sinatra
         /^\(.*\)$/,                                         # generated code
         /rubygems\/(custom|core_ext\/kernel)_require\.rb$/, # rubygems require hacks
         /active_support/,                                   # active_support require hacks
-        /bundler(\/runtime)?\.rb/,                          # bundler require hacks
+        /bundler(\/(?:runtime|inline))?\.rb/,               # bundler require hacks
         /<internal:/,                                       # internal in ruby >= 1.9.2
         /src\/kernel\/bootstrap\/[A-Z]/                     # maglev kernel files
       ]

test/settings_test.rb

@@ -186,6 +186,12 @@ class SettingsTest < Minitest::Test
       @base.enable :methodoverride
       assert @base.methodoverride?
     end
+
+    it 'ignores bundler/inline from callers' do
+      @application.stub(:caller, ->(_){ ['/path/to/bundler/inline.rb', $0] }) do
+        assert_equal File.expand_path($0), File.expand_path(@application.send(:caller_files).first)
+      end
+    end
   end
 
   describe 'run' do