[Lldb-commits] [lldb] [lldb] Check multiword command in `UserCommandExists` (PR #176998)

[Ebuka Ezike via lldb-commits]

https://github.com/da-viper created https://github.com/llvm/llvm-project/pull/176998

User created multiword command is not reported when querying `SBCommandInterpreter::UserCommandExists`

>From 706399f6e4f736b083b1e30f8670926382fdffb1 Mon Sep 17 00:00:00 2001
From: Ebuka Ezike <yerimyah1 at gmail.com>
Date: Tue, 20 Jan 2026 18:59:38 +0000
Subject: [PATCH] [lldb] Check multiword command in `UserCommandExists`

User created multiword command is not reported when querying
`SBCommandInterpreter::UserCommandExists`
---
 lldb/source/Interpreter/CommandInterpreter.cpp                | 3 ++-
 .../plugins/command_plugin/TestPluginCommands.py              | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/lldb/source/Interpreter/CommandInterpreter.cpp b/lldb/source/Interpreter/CommandInterpreter.cpp
index 7be7ce000ee60..fdde65428326c 100644
--- a/lldb/source/Interpreter/CommandInterpreter.cpp
+++ b/lldb/source/Interpreter/CommandInterpreter.cpp
@@ -1544,7 +1544,8 @@ bool CommandInterpreter::AliasExists(llvm::StringRef cmd) const {
 }
 
 bool CommandInterpreter::UserCommandExists(llvm::StringRef cmd) const {
-  return m_user_dict.find(cmd) != m_user_dict.end();
+  return llvm::is_contained(m_user_dict, cmd) ||
+         llvm::is_contained(m_user_mw_dict, cmd);
 }
 
 bool CommandInterpreter::UserMultiwordCommandExists(llvm::StringRef cmd) const {
diff --git a/lldb/test/API/functionalities/plugins/command_plugin/TestPluginCommands.py b/lldb/test/API/functionalities/plugins/command_plugin/TestPluginCommands.py
index d2df036683bf6..f7fb0ed7fd680 100644
--- a/lldb/test/API/functionalities/plugins/command_plugin/TestPluginCommands.py
+++ b/lldb/test/API/functionalities/plugins/command_plugin/TestPluginCommands.py
@@ -31,10 +31,12 @@ def test_load_plugin(self):
 
         retobj = lldb.SBCommandReturnObject()
 
-        retval = self.dbg.GetCommandInterpreter().HandleCommand(
+        cinterpreter = self.dbg.GetCommandInterpreter()
+        retval = cinterpreter.HandleCommand(
             "plugin load %s" % self.getBuildArtifact(plugin_lib_name), retobj
         )
 
+        self.assertTrue(cinterpreter.UserCommandExists("plugin_loaded_command"))
         retobj.Clear()
 
         retval = self.dbg.GetCommandInterpreter().HandleCommand(