dispatch: make "_checkshellalias" reusable regardless of adding aliases
To reduce changes in the subsequent patch fixing
issue4355, this patch
makes "_checkshellalias" reusable regardless of adding aliases.
In this patch, alias definitions are added and restored, only when
"precheck=True".
build: don't clean __version__.py on 'make clean' in release tarballs
When running 'make clean' in an extracted release tarball, file
mercurial/__version__.py is removed, causing a subsequent install to
indicate 'version unknown'.
This problem was reported in the past [1] and a patch proposed in that mail,
but was never properly sent nor applied.
[1] http://selenic.com/pipermail/mercurial/2010-December/036249.html
revert: drop now useless conditional in the backup check
Now that we removed the (hopeless) attempt to backup file we knew to be
missing in the target changeset, we can stop checking if the file exists in
the target changeset.
revert: no backup for `dsadded` set
There is only one case where a backup is required in the `dsadded` set, and the
current backup mechanism fails to handle it. So we stop trying to do backups at
all for now. This will help us to simplify the backup code and finally fix
this backup issue.
revert: add more padding in the dispatch list
We are going to add more sets and some of them will have longer names. We add
padding in a standalone patch for readbility purposes.
revert: add documentation in the dispatch table
More sets are coming so documenting the existing ones will help.
revert: add a way for external extensions to prefetch file data
This allow extensions that mess with the storage layer (remotefilelog,
largefile) to prefetch any data that will be accessed during the revert
operation.
We are currently fetching more data than theoretically required because the
backup code is a bit stupid. Future patches will improve that.