Merge branch 'allow-@' into 'master'

Allow "@" in file names and path

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/4111

See merge request !2665

lib/gitlab/regex.rb

@@ -44,19 +44,19 @@ module Gitlab
     def file_name_regex
-      @file_name_regex ||= /\A[a-zA-Z0-9_\-\.]*\z/.freeze
+      @file_name_regex ||= /\A[a-zA-Z0-9_\-\.\@]*\z/.freeze
     end
     def file_name_regex_message
-      "can contain only letters, digits, '_', '-' and '.'. "
+      "can contain only letters, digits, '_', '-', '@' and '.'. "
     end
     def file_path_regex
-      @file_path_regex ||= /\A[a-zA-Z0-9_\-\.\/]*\z/.freeze
+      @file_path_regex ||= /\A[a-zA-Z0-9_\-\.\/\@]*\z/.freeze
     end
     def file_path_regex_message
-      "can contain only letters, digits, '_', '-' and '.'. Separate directories with a '/'. "
+      "can contain only letters, digits, '_', '-', '@' and '.'. Separate directories with a '/'. "
     end

spec/lib/gitlab/regex_spec.rb

@@ -21,4 +21,12 @@ describe Gitlab::Regex, lib: true do
     it { expect('Dash – is this').to match(Gitlab::Regex.project_name_regex) }
     it { expect('?gitlab').not_to match(Gitlab::Regex.project_name_regex) }
   end
+
+  describe 'file name regex' do
+    it { expect('foo@bar').to match(Gitlab::Regex.file_name_regex) }
+  end
+
+  describe 'file path regex' do
+    it { expect('foo@/bar').to match(Gitlab::Regex.file_path_regex) }
+  end
 end