Revert 143359 and modify the test case to not include non-valid c identifier character.

llvm-svn: 143372

lldb/source/Interpreter/CommandInterpreter.cpp

@@ -1376,6 +1376,13 @@ CommandInterpreter::HandleCommand (const char *command_line,
                         }
                     }
                     break;
+
+                default:
+                    result.AppendErrorWithFormat ("unknown command shorthand suffix: '%s'\n", 
+                                                  suffix.c_str());
+                    result.SetStatus (eReturnStatusFailed);
+                    return false;
+        
                 }
             }
         }

lldb/test/functionalities/command_regex/TestCommandRegex.py

@@ -27,13 +27,13 @@ class CommandRegexTestCase(TestBase):
 
         # Substitute 'Help!' for 'help' using the 'commands regex' mechanism.
         child.expect_exact(prompt)
-        child.sendline("command regex 'Help!'")
+        child.sendline("command regex 'Help__'")
         child.expect_exact(regex_prompt)
         child.sendline('s/^$/help/')
         child.expect_exact(regex_prompt1)
         child.sendline('')
         # Help!
-        child.sendline('Help!')
+        child.sendline('Help__')
         # If we see the familiar 'help' output, the test is done.
         child.expect('The following is a list of built-in, permanent debugger commands:')