Dash and dot in package version

[Ludovico Cavedon <ludovico.cavedon@gmail.com>]

Hi,

I could not find exactly how "-" and "." are ordered in package names.
Are they equivalent, counting as non-digits?

My actual problem is:
-current version of qutecom is "2.2~rc3.dfsg1"
-as per lintian warning, the next version will be "+dfsg1" instead of
".dfsg1"
-latest upstream version is still 2.2~rc3, but I would like to upload a
more recent snapshot from upstream hg. What would be the correct
packager version?

- "2.2~rc3+hg365+dfsg1", being lucky that "+hg" comes after "+dfsg"
- "2.2~rc3-hg365+dfsg1", but would have the "-" any drawback I do not see?

Thanks,
Ludovico