1 files changed, 40 insertions, 31 deletions

diff --git a/lib/bundler/runtime.rb b/lib/bundler/runtime.rb
index b72d3786bd..5280e72aa2 100644
--- a/lib/bundler/runtime.rb
+++ b/lib/bundler/runtime.rb
@@ -50,35 +50,30 @@ module Bundler
       Plugin.hook(Plugin::Events::GEM_BEFORE_REQUIRE_ALL, dependencies)
 
       dependencies.each do |dep|
-        required_file = nil
         Plugin.hook(Plugin::Events::GEM_BEFORE_REQUIRE, dep)
 
-        begin
-          # Loop through all the specified autorequires for the
-          # dependency. If there are none, use the dependency's name
-          # as the autorequire.
-          Array(dep.autorequire || dep.name).each do |file|
-            # Allow `require: true` as an alias for `require: <name>`
-            file = dep.name if file == true
-            required_file = file
-            begin
-              Kernel.require file
-            rescue RuntimeError => e
-              raise e if e.is_a?(LoadError) # we handle this a little later
+        # Loop through all the specified autorequires for the
+        # dependency. If there are none, use the dependency's name
+        # as the autorequire.
+        Array(dep.autorequire || dep.name).each do |file|
+          # Allow `require: true` as an alias for `require: <name>`
+          file = dep.name if file == true
+          required_file = file
+          begin
+            Kernel.require required_file
+          rescue LoadError => e
+            if dep.autorequire.nil? && e.path == required_file
+              if required_file.include?("-")
+                required_file = required_file.tr("-", "/")
+                retry
+              end
+            else
               raise Bundler::GemRequireError.new e,
                 "There was an error while trying to load the gem '#{file}'."
             end
-          end
-        rescue LoadError => e
-          raise if dep.autorequire || e.path != required_file
-
-          if dep.autorequire.nil? && dep.name.include?("-")
-            begin
-              namespaced_file = dep.name.tr("-", "/")
-              Kernel.require namespaced_file
-            rescue LoadError => e
-              raise if e.path != namespaced_file
-            end
+          rescue StandardError => e
+            raise Bundler::GemRequireError.new e,
+              "There was an error while trying to load the gem '#{file}'."
           end
         end
 
@@ -135,11 +130,14 @@ module Bundler
 
       specs_to_cache.each do |spec|
         next if spec.name == "bundler"
-        next if spec.source.is_a?(Source::Gemspec)
-        if spec.source.respond_to?(:migrate_cache)
-          spec.source.migrate_cache(custom_path, local: local)
-        elsif spec.source.respond_to?(:cache)
-          spec.source.cache(spec, custom_path)
+
+        source = spec.source
+        next if source.is_a?(Source::Gemspec)
+
+        if source.respond_to?(:migrate_cache)
+          source.migrate_cache(custom_path, local: local)
+        elsif source.respond_to?(:cache)
+          source.cache(spec, custom_path)
         end
       end
 
@@ -176,7 +174,14 @@ module Bundler
       spec_cache_paths     = []
       spec_gemspec_paths   = []
       spec_extension_paths = []
-      Bundler.rubygems.add_default_gems_to(specs).values.each do |spec|
+      specs_to_keep = Bundler.rubygems.add_default_gems_to(specs).values
+
+      current_bundler = Bundler.rubygems.find_bundler(Bundler.gem_version)
+      if current_bundler
+        specs_to_keep << current_bundler
+      end
+
+      specs_to_keep.each do |spec|
         spec_gem_paths << spec.full_gem_path
         # need to check here in case gems are nested like for the rails git repo
         md = %r{(.+bundler/gems/.+-[a-f0-9]{7,12})}.match(spec.full_gem_path)
@@ -242,7 +247,11 @@ module Bundler
 
         cached.each do |path|
           Bundler.ui.info "  * #{File.basename(path)}"
-          File.delete(path)
+
+          begin
+            File.delete(path)
+          rescue Errno::ENOENT
+          end
         end
       end
     end