Fix an issue with nested aliases where the help system wouldn't correctly track the fact that an alias is an alias to a dash-dash alias

(and I hope I typed the word 'alias' enough times in this commit message :-)

llvm-svn: 264468

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/source/Interpreter/CommandAlias.cpp b/lldb/source/Interpreter/CommandAlias.cpp
index f7d8e8e9f1b..a915d63e654 100644
--- a/lldb/source/Interpreter/CommandAlias.cpp
+++ b/lldb/source/Interpreter/CommandAlias.cpp
@@ -236,11 +236,22 @@ CommandAlias::IsDashDashCommand ()
                     break;
                 }
             }
+            // if this is a nested alias, it may be adding arguments on top of an already dash-dash alias
+            if ((m_is_dashdash_alias == eLazyBoolNo) && IsNestedAlias())
+                m_is_dashdash_alias = (GetUnderlyingCommand()->IsDashDashCommand() ? eLazyBoolYes : eLazyBoolNo);
         }
     }
     return (m_is_dashdash_alias == eLazyBoolYes);
 }
 
+bool
+CommandAlias::IsNestedAlias ()
+{
+    if (GetUnderlyingCommand())
+        return GetUnderlyingCommand()->IsAlias();
+    return false;
+}
+
 std::pair<lldb::CommandObjectSP, OptionArgVectorSP>
 CommandAlias::Desugar ()
 {