Fix a bug in history command

This is a bug that was introduced recently when the functionality of the list command was merged with the history command.

This prevents an unhandled exception crash under certain unlikely but possible circumstances.

1 files changed, 5 insertions, 2 deletions

diff --git a/cmd2.py b/cmd2.py
index 3755ef56..13169a17 100755
--- a/cmd2.py
+++ b/cmd2.py
@@ -1610,8 +1610,11 @@ class Cmd(cmd.Cmd):
         if arg:
             # If a character indicating a slice is present, retrieve a slice of the history
             if '..' in arg or ':' in arg:
-                # Get a slice of history
-                history = self.history.span(arg)
+                try:
+                    # Get a slice of history
+                    history = self.history.span(arg)
+                except IndexError:
+                    history = self.history.get(arg)
             else:
                 # Get item(s) from history by index or string search
                 history = self.history.get(arg)