Éric Araujo added the comment: I think I get it: Python sets custom delimiters that include '-' because for the Python REPL, it’s not possible to have one identifier with a dash, so it’s considered a delimiter and when you press tab, a new completion is started. For a custom REPL however, you may want to have dashes as legal parts of your completed words, so you want to call set_completer_delims. Reclassifying as a doc patch. ---------- assignee: -> docs@python components: +Documentation -Library (Lib) keywords: +easy nosy: +docs@python stage: -> needs patch versions: +Python 2.7, Python 3.2, Python 3.3, Python 3.4 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue10796> _______________________________________