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git-wip is a script that will manage Work In Progress (or WIP) branches. WIP branches are mostly throw away but identify points of development between commits. The intent is to tie this script into your editor so that each time you save your file, the git-wip script captures that state in git. git-wip also helps you return back to a previous state of development.

Latest git-wip can be obtained from git-wip was written by Bart Trojanowski

WIP branches

Wip branches are named after the branch that is being worked on, but are prefixed with 'wip/'. For example if you are working on a branch named 'feature' then the git-wip script will only manipulate the 'wip/feature' branch.

When you run git-wip for the first time, it will capture all changes to tracked files and all untracked (but not ignored) files, create a commit, and make a new wip/topic branch point to it.

--- * --- * --- *          <-- topic
                  *        <-- wip/topic

The next invocation of git-wip after a commit is made will continue to evolve the work from the last wip/topic point.

--- * --- * --- *          <-- topic
                    *      <-- wip/topic

Whne git-wip is invoked after a commit is made, the state of the wip/topic branch will be reset back to your topic branch and the new changes to the working tree will be caputred on a new commit.

--- * --- * --- * --- *    <-- topic
                 \     \
                  *     *  <-- wip/topic

While the old wip/topic work is no longer accessible directly, it can alwasy be recovered from git-reflog. In the above example you could use wip/topic@{1} to access the dangling references.

git-wip command

The git-wip command can be invoked in several differnet ways.

  • git wip

    In this mode, git-wip will create a new commit on the wip/topic branch (creating it if needed) as described above.

  • git wip save "description"

    Similar to git wip, but allows for a custom commit message.

  • git wip log

    Show the list of the work that leads upto the last WIP commit. This is similar to invoking:

    git log --stat wip/$branch...$(git merge-base wip/$branch $branch)

editor hooking

To use git-wip effectively, you should tie it into your editor so you don't have to remember to run git-wip manually.

To add git-wip support to vim you can install the provided vim plugin.

cp vim/plugin/git-wip ~/.vim/plugin/git-wip

Alternatively, you can add the following to your .vimrc. Doing so will make it be invoked after every :w operation.

augroup git-wip
  autocmd BufWritePost * :silent !cd "`dirname "%"`" && git wip save "WIP from vim" --editor -- "`basename "%"`"
augroup END

The --editor option puts git-wip into a special mode that will make it more quiet and not report errors if there were no changes made to the file.

To add git-wip support to emacs add the following to your .emacs. Doing so will make it be invoked after every save-buffer operation.

(load "/{path_to_git-wip}/emacs/git-wip.el")

Or you may also copy the content of git-wip.el in your .emacs.


Should you discover that you made some really bad changes in your code, from which you want to recover, here is what to do.

First we need to find the commit we are interested in. If it's the most recent then it can be referenced with wip/master (assuming your branch is master), otherwise you may need to find the one you want using:

git reflog show wip/master

I personally prefer to inspect the reflog with git log -g, and sometimes with -p also:

git log -g -p wip/master

Once you've picked a commit, you need to checkout the files, note that we are not switching the commit that your branch points to (HEAD will continue to reference the last real commit on the branch). We are just checking out the files:

git checkout ref -- .

Here ref could be a SHA1 or wip/master. If you only want to recover one file, then use it's path instead of the dot.

The changes will be staged in the index and checked out into the working tree, to review what the differences are between the last commit, use:

git diff --cached

If you want, you can unstage all or some with git reset, optionally specifying a filename to unstage. You can then stage them again using git add or git add -p. Finally, when you're happy with the changes, commit them.

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