1 files changed, 24 insertions, 0 deletions
diff --git a/lib/gitlab/quick_actions/substitution_definition.rb b/lib/gitlab/quick_actions/substitution_definition.rb
new file mode 100644
index 00000000000..032c49ed159
--- /dev/null
+++ b/lib/gitlab/quick_actions/substitution_definition.rb
@@ -0,0 +1,24 @@
+module Gitlab
+  module QuickActions
+    class SubstitutionDefinition < CommandDefinition
+      # noop?=>true means these won't get extracted or removed by Gitlab::QuickActions::Extractor#extract_commands
+      # QuickActions::InterpretService#perform_substitutions handles them separately
+      def noop?
+        true
+      end
+
+      def match(content)
+        content.match %r{^/#{all_names.join('|')} ?(.*)$}
+      end
+
+      def perform_substitution(context, content)
+        return unless content
+
+        all_names.each do |a_name|
+          content.gsub!(%r{/#{a_name} ?(.*)$}, execute_block(action_block, context, '\1'))
+        end
+        content
+      end
+    end
+  end
+end