1 files changed, 19 insertions, 0 deletions
diff --git a/lib/gitlab/unicode.rb b/lib/gitlab/unicode.rb
new file mode 100644
index 00000000000..b49c5647dab
--- /dev/null
+++ b/lib/gitlab/unicode.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Gitlab
+  class Unicode
+    # Regular expression for identifying bidirectional control
+    # characters in UTF-8 strings
+    #
+    # Documentation on how this works:
+    # https://idiosyncratic-ruby.com/41-proper-unicoding.html
+    BIDI_REGEXP = /\p{Bidi Control}/.freeze
+
+    class << self
+      # Warning message used to highlight bidi characters in the GUI
+      def bidi_warning
+        _("Potentially unwanted character detected: Unicode BiDi Control")
+      end
+    end
+  end
+end