diff --git a/lib/cocoapods-downloader/base.rb b/lib/cocoapods-downloader/base.rb
index 131f5c3..3d20fc8 100644
--- a/lib/cocoapods-downloader/base.rb
+++ b/lib/cocoapods-downloader/base.rb
@@ -63,6 +63,10 @@ def name
         self.class.name.split('::').last
       end
 
+      def escaped_target_path
+        escape_pathname(target_path)
+      end
+
       #-----------------------------------------------------------------------#
 
       # @!group Configuration
@@ -224,6 +228,11 @@ def self.executable(name)
           execute_command(name.to_s, command, true)
         end
       end
+
+      def escape_pathname(pathname=target_path)
+        require "shellwords"
+        pathname.to_s.shellescape
+      end
     end
   end
 end
diff --git a/lib/cocoapods-downloader/bazaar.rb b/lib/cocoapods-downloader/bazaar.rb
index 6ecf8e1..95505b3 100644
--- a/lib/cocoapods-downloader/bazaar.rb
+++ b/lib/cocoapods-downloader/bazaar.rb
@@ -34,11 +34,11 @@ def download!
       end
 
       def download_head!
-        bzr! %|branch "#{url}" #{dir_opts} "#{target_path}"|
+        bzr! %|branch "#{url}" #{dir_opts} #{escaped_target_path}|
       end
 
       def download_revision!(rev)
-        bzr! %|branch "#{url}" #{dir_opts} -r '#{rev}' "#{target_path}"|
+        bzr! %|branch "#{url}" #{dir_opts} -r '#{rev}' #{escaped_target_path}|
       end
 
       def dir_opts
diff --git a/lib/cocoapods-downloader/git.rb b/lib/cocoapods-downloader/git.rb
index a0d1321..7b9e21a 100644
--- a/lib/cocoapods-downloader/git.rb
+++ b/lib/cocoapods-downloader/git.rb
@@ -64,7 +64,7 @@ def clone_url
       #
       def clone(from, to, flags = '')
         ui_sub_action("Cloning to Pods folder") do
-          command = %Q|clone "#{from}" "#{to}"|
+          command = %Q|clone #{from} #{escape_pathname(to)}|
           command << ' ' + flags if flags
           git!(command)
         end
diff --git a/lib/cocoapods-downloader/http.rb b/lib/cocoapods-downloader/http.rb
index 559beb4..4d71162 100644
--- a/lib/cocoapods-downloader/http.rb
+++ b/lib/cocoapods-downloader/http.rb
@@ -20,7 +20,7 @@ class UnsupportedFileTypeError < StandardError; end
 
       def download!
         @filename = filename_with_type(type)
-        @download_path = target_path + @filename
+        @download_path = escape_pathname(target_path + @filename)
         download_file(@download_path)
         extract_with_type(@download_path, type)
       end
@@ -84,21 +84,21 @@ def filename_with_type(type=:zip)
       end
 
       def download_file(full_filename)
-        curl! "-L -o '#{full_filename}' '#{url}'"
+        curl! %|-L -o #{full_filename} #{url} --create-dirs|
       end
 
       def extract_with_type(full_filename, type=:zip)
         case type
         when :zip
-          unzip! "'#{full_filename}' -d '#{target_path}'"
+          unzip! %|#{full_filename} -d #{escaped_target_path}|
         when :tgz
-          tar! "xfz '#{full_filename}' -C '#{target_path}'"
+          tar! %|xfz #{full_filename} -C #{escaped_target_path}|
         when :tar
-          tar! "xf '#{full_filename}' -C '#{target_path}'"
+          tar! %|xf #{full_filename} -C #{escaped_target_path}|
         when :tbz
-          tar! "xfj '#{full_filename}' -C '#{target_path}'"
+          tar! %|xfj #{full_filename} -C #{escaped_target_path}|
         when :txz
-          tar! "xf '#{full_filename}' -C '#{target_path}'"
+          tar! %|xf #{full_filename} -C #{escaped_target_path}|
         else
           raise UnsupportedFileTypeError.new "Unsupported file type: #{type}"
         end
@@ -106,7 +106,7 @@ def extract_with_type(full_filename, type=:zip)
         # If the archive is a tarball and it only contained a folder, move its contents to the target (#727)
         if should_flatten?
           contents = target_path.children
-          contents.delete(full_filename)
+          contents.delete(target_path + @filename)
           entry = contents.first
           if contents.count == 1 && entry.directory?
             FileUtils.move(entry.children, target_path)
diff --git a/lib/cocoapods-downloader/mercurial.rb b/lib/cocoapods-downloader/mercurial.rb
index 57f7a88..049acb6 100644
--- a/lib/cocoapods-downloader/mercurial.rb
+++ b/lib/cocoapods-downloader/mercurial.rb
@@ -32,11 +32,11 @@ def download!
       end
 
       def download_head!
-        hg! %|clone "#{url}" "#{target_path}"|
+        hg! %|clone #{url} #{escaped_target_path}|
       end
 
       def download_revision!
-        hg! %|clone "#{url}" --rev '#{options[:revision]}' "#{target_path}"|
+        hg! %|clone "#{url}" --rev '#{options[:revision]}' #{escaped_target_path}|
       end
 
     end
diff --git a/lib/cocoapods-downloader/subversion.rb b/lib/cocoapods-downloader/subversion.rb
index 050443b..f440101 100644
--- a/lib/cocoapods-downloader/subversion.rb
+++ b/lib/cocoapods-downloader/subversion.rb
@@ -23,12 +23,12 @@ def checkout_options
       executable :svn
 
       def download!
-        output = svn!(%|#{export_subcommand} "#{reference_url}" "#{target_path}"|)
+        output = svn!(%|#{export_subcommand} "#{reference_url}" #{escaped_target_path}|)
           store_exported_revision(output)
       end
 
       def download_head!
-        output = svn!(%|#{export_subcommand} "#{trunk_url}" "#{target_path}"|)
+        output = svn!(%|#{export_subcommand} "#{trunk_url}" #{escaped_target_path}|)
           store_exported_revision(output)
       end
 
diff --git a/spec/cocoapods-downloaders/bazaar_spec.rb b/spec/cocoapods-downloaders/bazaar_spec.rb
index 4b1f3a3..e2258b1 100644
--- a/spec/cocoapods-downloaders/bazaar_spec.rb
+++ b/spec/cocoapods-downloaders/bazaar_spec.rb
@@ -36,6 +36,22 @@ module Downloader
         tmp_folder('README').read.strip.should == 'Fourth Commit'
       end
 
+      describe "when the directory name has quotes or spaces" do
+        it 'checks out the head revision' do
+          options = { :bzr => fixture('bazaar-repo') }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download
+          tmp_folder_with_quotes("README").read.strip.should == 'Fourth Commit'
+        end
+
+        it 'checks out a specific revision into a directory with quotes' do
+          options = { :bzr => fixture('bazaar-repo'), :revision => '1' }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download
+          tmp_folder_with_quotes("README").read.strip.should == 'First Commit'
+        end
+      end
+
       it 'returns the checked out revision' do
         options = { :bzr => fixture('bazaar-repo') }
         downloader = Downloader.for_target(tmp_folder, options)
diff --git a/spec/cocoapods-downloaders/git_spec.rb b/spec/cocoapods-downloaders/git_spec.rb
index e3f71eb..444ebcd 100644
--- a/spec/cocoapods-downloaders/git_spec.rb
+++ b/spec/cocoapods-downloaders/git_spec.rb
@@ -15,6 +15,14 @@ module Downloader
         tmp_folder('README').read.strip.should == 'first commit'
       end
 
+
+      it "checks out when the path contains quotes or spaces" do
+        options = { :git => fixture('git-repo'), :commit => '7ad3a6c' }
+        downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+        downloader.download
+        tmp_folder_with_quotes("README").read.strip.should == 'first commit'
+      end
+
       it "checks out a specific branch" do
         options = { :git => fixture('git-repo'), :branch => 'topic_branch' }
         downloader = Downloader.for_target(tmp_folder, options)
diff --git a/spec/cocoapods-downloaders/http_spec.rb b/spec/cocoapods-downloaders/http_spec.rb
index 575bf69..0b46f0b 100644
--- a/spec/cocoapods-downloaders/http_spec.rb
+++ b/spec/cocoapods-downloaders/http_spec.rb
@@ -16,6 +16,14 @@ module Downloader
         tmp_folder('GoogleAdMobSearchAdsSDK/GADSearchRequest.h').read.strip.should =~ /Google Search Ads iOS SDK/
       end
 
+      it 'should download file and unzip it when the target folder name contains quotes or spaces' do
+        options = { :http => 'http://dl.google.com/googleadmobadssdk/googleadmobsearchadssdkios.zip' }
+        downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+        VCR.use_cassette('tarballs', :record => :new_episodes) { downloader.download }
+        tmp_folder_with_quotes("GoogleAdMobSearchAdsSDK/GADSearchRequest.h").should.exist
+        tmp_folder_with_quotes("GoogleAdMobSearchAdsSDK/GADSearchRequest.h").read.strip.should =~ /Google Search Ads iOS SDK/
+      end
+
       it 'should flatten zip archives, when the spec explicitly demands it' do
         options = {
           :http => 'https://github.com/kevinoneill/Useful-Bits/archive/1.0.zip',
diff --git a/spec/cocoapods-downloaders/mercurial_spec.rb b/spec/cocoapods-downloaders/mercurial_spec.rb
index 1e2eaa6..5d3621c 100644
--- a/spec/cocoapods-downloaders/mercurial_spec.rb
+++ b/spec/cocoapods-downloaders/mercurial_spec.rb
@@ -22,6 +22,22 @@ module Downloader
         tmp_folder('README').read.strip.should == 'second commit'
       end
 
+      describe "when the directory name has quotes or spaces" do
+        it "checks out a specific revision" do
+          options = { :hg => fixture('mercurial-repo'), :revision => '46198bb3af96' }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download
+          tmp_folder_with_quotes('README').read.strip.should == 'first commit'
+        end
+
+        it "checks out the head revision" do
+          options = { :hg => fixture('mercurial-repo') }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download
+          tmp_folder_with_quotes('README').read.strip.should == 'second commit'
+        end
+      end
+
       it "returns the checked out revision" do
         options = { :hg => fixture('mercurial-repo') }
         downloader = Downloader.for_target(tmp_folder, options)
diff --git a/spec/cocoapods-downloaders/subversion_spec.rb b/spec/cocoapods-downloaders/subversion_spec.rb
index 98508a3..094104c 100644
--- a/spec/cocoapods-downloaders/subversion_spec.rb
+++ b/spec/cocoapods-downloaders/subversion_spec.rb
@@ -29,6 +29,22 @@ module Downloader
         tmp_folder('README').read.strip.should == 'unintersting'
       end
 
+      describe "when the directory name has quotes or spaces" do
+        it "checks out a specific revision" do
+          options = { :svn => "file://#{fixture('subversion-repo')}", :revision => '1' }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download
+          tmp_folder_with_quotes('README').read.strip.should == 'first commit'
+        end
+
+        it "checks out the head version" do
+          options = { :svn => "file://#{fixture('subversion-repo')}", :tag => 'tag-1' }
+          downloader = Downloader.for_target(tmp_folder_with_quotes, options)
+          downloader.download_head
+          tmp_folder_with_quotes('README').read.strip.should == 'unintersting'
+        end
+      end
+
       it "returns the checked out revision" do
         options = { :svn => "file://#{fixture('subversion-repo')}" }
         downloader = Downloader.for_target(tmp_folder, options)
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 7d34eaf..5a35d2a 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -49,6 +49,10 @@ def tmp_folder(path = '')
   return Pathname.pwd + 'tmp' + path
 end
 
+def tmp_folder_with_quotes(path = '')
+  return tmp_folder File.join("a' \"b", path)
+end
+
 def fixture(path)
   return Pathname.pwd + 'spec/fixtures/' + path
 end