[issue518] PATCH: Change default tag behaviour to not overwrite existing tags.

[Johan Herland]

New submission from Johan Herland <johherla at online.no>:

When adding a tag, the default behaviour should not be to
silently overwrite an earlier tag with the same name. Instead,
the tag creation should fail with an error message. However,
overwriting tags should be allowed when the new -f/--force
flag is specified.

This patch implements:
1. The change in default behaviour.
2. The addition of -f/--force to override default behaviour.
3. Minor change to test-tags reflecting the new behaviour.

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files: hgtagforcefix-johherla-take1.patch
messages: 2895
nosy: jherland
priority: bug
status: unread
title: PATCH: Change default tag behaviour to not overwrite existing tags.

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Mercurial issue tracker <mercurial-bugs at selenic.com>
<http://www.selenic.com/mercurial/bts/issue518>
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