This changeset move all checks and raises related to arguments
validation to the top of the file. This gathers all the logic in one
place and clarifies the code doing actual work. This paves the way for
splitting this gigantic function in separated functions.
A `goal` variable is introduced in the process. It holds the action to
be done by this invocation (new, continue or abort).
An invalid invocation is found in the process (the new code is a bit stricter).
This is simpler than temporary file version. There some minor test
changes since commit messages are no longer modifed. There is still
some tests using --commands with a real file.
Have histedit record the hex of the original changeset as already done by:
- graft
- commit --amend
- rebase
My main motivation for adding this is to prevent the creation of obsolescence cycle
(see issue3681).
Note that commit created during edit are not affected yet.
The old and fragile patching logic is replaced by smart merges (as rebase and
graft do). This should prevents some conflicts and smoother human resolution.
For this purpose the "foldchanges" function is renamed to "applychanges" and
handle a single revision only.
The previous version would commute if using merge algorithm (to be accurate,
merge will cleanly prompt the user during the merge).
The new version create and initial commit with some content for all involved
files en ensure all changes are a content changes of the first lines. This lead
to guaranteed conflict when commuted.
