Index: lldb/include/lldb/Core/Debugger.h
===================================================================
--- lldb/include/lldb/Core/Debugger.h
+++ lldb/include/lldb/Core/Debugger.h
@@ -301,6 +301,8 @@
 
   bool GetShowProgress() const;
 
+  bool SetShowProgress(bool show_progress);
+
   llvm::StringRef GetShowProgressAnsiPrefix() const;
 
   llvm::StringRef GetShowProgressAnsiSuffix() const;
Index: lldb/source/Core/Debugger.cpp
===================================================================
--- lldb/source/Core/Debugger.cpp
+++ lldb/source/Core/Debugger.cpp
@@ -385,6 +385,12 @@
       nullptr, idx, g_debugger_properties[idx].default_uint_value != 0);
 }
 
+bool Debugger::SetShowProgress(bool show_progress) {
+  const uint32_t idx = ePropertyShowProgress;
+  return m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx,
+                                                      show_progress);
+}
+
 llvm::StringRef Debugger::GetShowProgressAnsiPrefix() const {
   const uint32_t idx = ePropertyShowProgressAnsiPrefix;
   return m_collection_sp->GetPropertyAtIndexAsString(nullptr, idx, "");
Index: lldb/source/Expression/REPL.cpp
===================================================================
--- lldb/source/Expression/REPL.cpp
+++ lldb/source/Expression/REPL.cpp
@@ -25,6 +25,7 @@
 REPL::REPL(LLVMCastKind kind, Target &target) : m_target(target), m_kind(kind) {
   // Make sure all option values have sane defaults
   Debugger &debugger = m_target.GetDebugger();
+  debugger.SetShowProgress(false);
   auto exe_ctx = debugger.GetCommandInterpreter().GetExecutionContext();
   m_format_options.OptionParsingStarting(&exe_ctx);
   m_varobj_options.OptionParsingStarting(&exe_ctx);