Lots of progress on the CommandAlias refactoring

This cleans things up such CommandAlias essentially can work as its own object; the aliases still live in a separate map, but are now just full-fledged CommandObjectSPs
This patch also cleans up help generation for aliases, allows aliases to vend their own help, and adds a tweak such that "dash-dash aliases", such as po, don't show the list of options for their underlying command, since those can't be provided anyway

I plan to fix up a few more things here, and then add a test case and proclaim victory

llvm-svn: 263499

1 files changed, 2 insertions, 0 deletions

diff --git a/lldb/source/Commands/CommandObjectHelp.cpp b/lldb/source/Commands/CommandObjectHelp.cpp
index d84de54..71f2800 100644
--- a/lldb/source/Commands/CommandObjectHelp.cpp
+++ b/lldb/source/Commands/CommandObjectHelp.cpp
@@ -128,6 +128,8 @@ CommandObjectHelp::DoExecute (Args& command, CommandReturnObject &result)
             {
                 sub_command = command.GetArgumentAtIndex(i);
                 matches.Clear();
+                if (sub_cmd_obj->IsAlias())
+                    sub_cmd_obj = ((CommandAlias*)sub_cmd_obj)->GetUnderlyingCommand().get();
                 if (! sub_cmd_obj->IsMultiwordObject ())
                 {
                     all_okay = false;