Hi,
"Andy Tai" <[EMAIL PROTECTED]> writes:
> So the problem does not depend on how the file list to commit is specified..
I believe that's exactly what he meant. But still, there _is_ a problem
and now one more way to exercise it. ;-)
But basically, it seems to me that this problem depends on the semantics
of partial commit. Suppose this:
# Pristine tree
$ tla mv b c
$ tla mv a b
$ vi b
# ...
$ chmod a+x b
$ tla commit -x b
What does this `commit' mean?
1. Commit everything but the renaming of `b' to `c'.
2. Commit everything but the renaming of `a' to `b'.
3. Commit everything but the changes made to the file that used to be
named `b'.
4. Commit everything but the changes made to the file currently known as
`b'.
5. Commit everything but the permission changes made to the file
that used to be named `b'.
6. Commit everything but the permission changes made to the file
currently named `b'.
7. Any combination of the above. ;-)
I'm not sure there exists a general solution to this problem, because
sometimes you'll want some semantics, and sometimes some other. Note
that the same problem arises with partial undo.
A better approach would be to list file IDs instead of file names. For
instance:
$ tla commit -x `tla id b | cut -f 2`
This is much less ambiguous but also less convenient. Then we could
assume, in this example, that both data and meta-data modifications
(including renaming and permissions) are excluded from the commit. But
then, in this very example, `commit -x b' would be impossible because of
the other renaming --- but after all, that is something the user should
expect.
Conclusion: as a first approach, I'd add a `--ids' option to all the
selective commands (`commit' and `undo') so that one can specify things
less ambiguously.
Then we could also add a `--name' and a `--permissions' option to
specify that we only want to undo/commit/exclude changes made to the
name or permissions. But that is probably less useful.
Thanks,
Ludovic.
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