Interesting side effect

[John Arbash Meinel]

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I don't know if everyone realizes, but when we switched to using
Optparse we got an accidental feature. Optparse allows you to give just
the unique prefix for options.

So while the option is "bzr missing --mine-only" optparse allows you to
do "bzr missing --mine". We've talked about getting rid of it, so that
people don't get used to shortcutting options, only to have that change
when we add a similar option.

However, it did help me just recently with:

$ bzr init-repo --btree
bzr: ERROR: ambiguous option: --btree (--btree-plain, --btree-rich-root,
- --btree-subtrees?)

It is nice to get option suggestions. Perhaps we could turn that on
instead of just refusing "bzr missing --mine" ?

John
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