5 files changed, 24 insertions, 1 deletions
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 61c35a494b..d7821fc636 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -3438,6 +3438,11 @@ const char * set_one_cmd_context(
     xp->xp_pattern = (char_u *)arg;
     break;
 
+  case CMD_messages:
+    xp->xp_context = EXPAND_MESSAGES;
+    xp->xp_pattern = (char_u *)arg;
+    break;
+
   case CMD_history:
     xp->xp_context = EXPAND_HISTORY;
     xp->xp_pattern = (char_u *)arg;
@@ -4872,6 +4877,7 @@ static struct {
 #endif
   { EXPAND_MAPPINGS, "mapping" },
   { EXPAND_MENUS, "menu" },
+  { EXPAND_MESSAGES, "messages" },
   { EXPAND_OWNSYNTAX, "syntax" },
   { EXPAND_SYNTIME, "syntime" },
   { EXPAND_SETTINGS, "option" },
@@ -9593,6 +9599,16 @@ char_u *get_behave_arg(expand_T *xp, int idx)
   return NULL;
 }
 
+// Function given to ExpandGeneric() to obtain the possible arguments of the
+// ":messages {clear}" command.
+char_u *get_messages_arg(expand_T *xp FUNC_ATTR_UNUSED, int idx)
+{
+  if (idx == 0) {
+    return (char_u *)"clear";
+  }
+  return NULL;
+}
+
 static TriState filetype_detect = kNone;
 static TriState filetype_plugin = kNone;
 static TriState filetype_indent = kNone;
diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index 0ba6c79a71..1d81a39dfe 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -4050,6 +4050,7 @@ ExpandFromContext (
     } tab[] = {
       { EXPAND_COMMANDS, get_command_name, false, true },
       { EXPAND_BEHAVE, get_behave_arg, true, true },
+      { EXPAND_MESSAGES, get_messages_arg, true, true },
       { EXPAND_HISTORY, get_history_arg, true, true },
       { EXPAND_USER_COMMANDS, get_user_commands, false, true },
       { EXPAND_USER_ADDR_TYPE, get_user_cmd_addr_type, false, true },
diff --git a/src/nvim/testdir/test_cmdline.vim b/src/nvim/testdir/test_cmdline.vim
index 0c9d1297d6..f7a6aba6e7 100644
--- a/src/nvim/testdir/test_cmdline.vim
+++ b/src/nvim/testdir/test_cmdline.vim
@@ -130,6 +130,11 @@ func Test_getcompletion()
   let l = getcompletion('dark', 'highlight')
   call assert_equal([], l)
 
+  let l = getcompletion('', 'messages')
+  call assert_true(index(l, 'clear') >= 0)
+  let l = getcompletion('not', 'messages')
+  call assert_equal([], l)
+
   if has('cscope')
     let l = getcompletion('', 'cscope')
     let cmds = ['add', 'find', 'help', 'kill', 'reset', 'show']
diff --git a/src/nvim/version.c b/src/nvim/version.c
index 34171a1bd3..d07a1c2d68 100644
--- a/src/nvim/version.c
+++ b/src/nvim/version.c
@@ -695,7 +695,7 @@ static const int included_patches[] = {
   37,
   // 36 NA
   35,
-  // 34,
+  34,
   33,
   32,
   31,
diff --git a/src/nvim/vim.h b/src/nvim/vim.h
index c71ca411ea..62ffc7433e 100644
--- a/src/nvim/vim.h
+++ b/src/nvim/vim.h
@@ -163,6 +163,7 @@ enum {
   EXPAND_SYNTIME,
   EXPAND_USER_ADDR_TYPE,
   EXPAND_PACKADD,
+  EXPAND_MESSAGES,
 };