I've sent a similar email to this one to the zope3-dev list.
I recently wanted to make a TALES namespace called 'enum-value' for use
in Launchpad development.
I found that this didn't work, because only the characters [a-zA-Z0-9_]
are allowed. You can find the regex on line 27 of
namespace_re = re.compile('(\w+):(.+)')
I propose to extend this to allow the '-' character too.
Any objections to this?
Are there any other characters that should be included?
Do any specifications need changing?
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