Make sure the "command regex add" has a unique name for editline history purposes.

llvm-svn: 212644
diff --git a/lldb/source/Commands/CommandObjectCommands.cpp b/lldb/source/Commands/CommandObjectCommands.cpp
index 04c5e1a..7d9bb7d 100644
--- a/lldb/source/Commands/CommandObjectCommands.cpp
+++ b/lldb/source/Commands/CommandObjectCommands.cpp
@@ -1034,7 +1034,7 @@
                 Debugger &debugger = m_interpreter.GetDebugger();
                 const bool multiple_lines = true; // Get multiple lines
                 IOHandlerSP io_handler_sp (new IOHandlerEditline (debugger,
-                                                                  "lldb",       // Name of input reader for history
+                                                                  "lldb-regex", // Name of input reader for history
                                                                   "\033[K> ",   // Prompt and clear line
                                                                   multiple_lines,
                                                                   0,            // Don't show line numbers