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diff --git a/autoload/xolox/misc/README.md b/autoload/xolox/misc/README.md index 9111126..f375fe6 100644 --- a/autoload/xolox/misc/README.md +++ b/autoload/xolox/misc/README.md @@ -1,24 +1,49 @@ # Miscellaneous auto-load Vim scripts -The git repository at <http://github.com/xolox/vim-misc> contains Vim scripts that are used by most of the [Vim plug-ins I've written] [plugins] yet don't really belong with any single one. I include this repository as a subdirectory of my plug-in repositories using the following commands: +The git repository at [github.com/xolox/vim-misc] [repository] contains Vim scripts that are used by most of the [Vim plug-ins I've written] [plugins] yet don't really belong with any single one. I include this repository as a subdirectory of my plug-in repositories using the following commands: $ git remote add -f vim-misc https://github.com/xolox/vim-misc.git $ git merge -s ours --no-commit vim-misc/master $ git read-tree --prefix=autoload/xolox/misc/ -u vim-misc/master $ git commit -m "Merge vim-misc repository as subdirectory" -To update a plug-in repository to the latest versions of the miscellaneous auto-load scripts I execute the following command: +The above trick is called the [subtree merge strategy] [merge-strategy]. To update a plug-in repository to the latest version of the miscellaneous auto-load scripts I execute the following command: $ git pull -s subtree vim-misc master +## Why make things so complex? + +I came up with this solution after multiple years of back and forth between Vim Online users, the GitHub crowd and my own sanity: + +1. When I started publishing my first Vim plug-ins I would prepare ZIP archives for Vim Online using makefiles. The makefiles would make sure the miscellaneous scripts were included in the uploaded distributions. This had two disadvantages: It lost git history and the repositories on GitHub were not usable out of the box, so [I got complaints from GitHub (Pathogen) users] [github-complaints]. + +2. My second attempt to solve the problem used git submodules which seemed like the ideal solution until I actually started doing it. Submodules are not initialized during a normal `git clone`, you need to use `git clone --recursive` instead but Vim plug-in managers like [Pathogen] [pathogen] and [Vundle] [vundle] don't do this (at least [they didn't when I tried] [vundle-discussion]) so people would end up with broken checkouts. + +3. After finding out that git submodules were not going to solve my problems I searched for other inclusion strategies supported by git. After a while I came upon the [subtree merge strategy] [merge-strategy] which I have been using for more than two years now. + +## Compatibility issues + +Regardless of the inclusion strategies discussed above, my current scheme has a flaw: If more than one of my plug-ins are installed in a Vim profile using [Pathogen] [pathogen] or [Vundle] [vundle], the miscellaneous autoload scripts will all be loaded from the subdirectory of one single plug-in. + +This means that when I break compatibility in the miscellaneous scripts, I have to make sure to merge the changes into all of my plug-ins. Even then, if a user has more than one of my plug-ins installed but updates only one of them, the other plug-ins (that are not yet up to date) can break (because of the backwards incompatible change). + +The `xolox#misc#compat#check()` function makes sure that incompatibilities are detected early so that the user knows which plug-in to update if incompatibilities arise. + ## Contact If you have questions, bug reports, suggestions, etc. the author can be contacted at <peter@peterodding.com>. The latest version is available at <http://peterodding.com/code/vim/misc> and <http://github.com/xolox/vim-misc>. ## License -This software is licensed under the [MIT license](http://en.wikipedia.org/wiki/MIT_License). -© 2011 Peter Odding <<peter@peterodding.com>>. +This software is licensed under the [MIT license] [mit]. +© 2013 Peter Odding <<peter@peterodding.com>>. +[github-complaints]: https://github.com/xolox/vim-easytags/issues/1 +[merge-strategy]: http://www.kernel.org/pub/software/scm/git/docs/howto/using-merge-subtree.html +[mit]: http://en.wikipedia.org/wiki/MIT_License +[pathogen]: http://www.vim.org/scripts/script.php?script_id=2332 [plugins]: http://peterodding.com/code/vim/ +[repository]: https://github.com/xolox/vim-misc +[vundle-discussion]: https://github.com/gmarik/vundle/pull/41 +[vundle]: https://github.com/gmarik/vundle |