[Freeipa-devel] [PATCH] 317 Improve StrEnum validation error message

[Martin Kosek]

Do not print list of possible values as "%r" but simply as a list
of quoted values which should make it easier to read for users.
Also add a special case when there is just one allowed value.

https://fedorahosted.org/freeipa/ticket/2869


Examples of the improved Enum validation error messages:

# ipa automember-add foo --type=bar
ipa: ERROR: invalid 'type': must be one of 'group', 'hostgroup'

# ipa trust-add foo --type=foo
ipa: ERROR: invalid 'type': must be 'ad'

Martin
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