diff --git a/doc/pages/keys.asciidoc b/doc/pages/keys.asciidoc
index e26d6925..d5807d79 100644
--- a/doc/pages/keys.asciidoc
+++ b/doc/pages/keys.asciidoc
@@ -798,7 +798,9 @@ The following keys are recognized by this mode to help with editing
     select previous completion candidate
 
 *<c-r>*::
-    insert then content of the register given by next key
+    insert then content of the register given by next key, if next key
+    has the Alt modifier, it will insert all values in the register
+    joined with spaces, else it will insert the main one
 
 *<c-v>*::
     insert next keystroke without interpreting it
diff --git a/src/input_handler.cc b/src/input_handler.cc
index ec8ff3b4..9fab9ccd 100644
--- a/src/input_handler.cc
+++ b/src/input_handler.cc
@@ -826,11 +826,16 @@ public:
         {
             on_next_key_with_autoinfo(context(), "register", KeymapMode::None,
                 [this](Key key, Context&) {
+                    const bool joined = (bool)(key.modifiers & Key::Modifiers::Alt);
+                    key.modifiers &= ~Key::Modifiers::Alt;
+
                     auto cp = key.codepoint();
                     if (not cp or key == Key::Escape)
                         return;
-                    StringView reg = context().main_sel_register_value(String{*cp});
-                    m_line_editor.insert(reg);
+
+                    m_line_editor.insert(
+                        joined ? join(RegisterManager::instance()[*cp].get(context()), ' ', false)
+                               : context().main_sel_register_value(String{*cp}));
 
                     display();
                     m_line_changed = true;