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[[Subversion]]
Rather than implement its own system for storing page histories etc,
ikiwiki simply uses subversion. (Supporting other revision control
systems is also possible, ikiwiki only needs $FOO add, $FOO commit, and
$FOO log).
Instead of editing pages in a stupid web form, you can use vim and commit
changes via svn. Or work disconnected using svk and push your changes out
when you come online.
ikiwiki can be run from a [[post-commit]] hook to update your wiki
immediately whenever you commit.
Note that ikiwiki does not require subversion to function. If you want to
run a simple wiki without page history, it can do that too.
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[[MarkDown]]
ikiwiki supports pages using [[MarkDown]] as their markup language. Any
page with a filename ending in ".mdwn" is converted from markdown to html
by ikiwiki. Markdown understands text formatted as it would be in an email,
and is quite smart about converting it to html. The only additional markup
provided by ikiwiki aside from regular markdown is the [[WikiLink]].
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support for other file types
ikiwiki also supports files of any other type, including raw html, text,
images, etc. These are not converted to wiki pages, they are just copied
unchanged by ikiwiki as it builds your wiki. So you can check in an image,
program, or other special file and link to it from your wiki pages.
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[[SubPage]]s
Arbitrarily deep hierarchies of pages with fairly simple and useful [[SubPage/LinkingRules]]
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[[blog]]s
You can turn any page in the wiki into a [[blog]]. Pages with names
matching a specified [[GlobList]] will be displayed as a weblog within
the blog page. And an RSS feed can be generated to follow the blog.
Ikiwikit's own [[TODO]] and [[news]] pages are good examples of some of the flexible ways that this can be used.
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Fast compiler
ikiwiki is fast and smart about updating a wiki, it only builds pages
that have changed (and tracks things like creation of new pages and links
that can indirectly cause a page to need a rebuild)
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[[Templates]]
ikiwiki generates html using templates so you can change the look and
layout of all pages in any way you would like.
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[[BackLinks]]
Automatically included on pages. Rather faster than eg [[MoinMoin]] and always there to help with navigation.
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[[PageHistory]]
Well, sorta. Rather than implementing YA history browser, it can link to
[[ViewCVS]] or the link to browse the history of a wiki page.
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[[RecentChanges]], editing pages in a web browser
Nearly the definition of a wiki, although perhaps ikiwiki challenges how
much of that web gunk a wiki really needs. These features are optional
and can be enabled by enabling [[CGI]].
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User registration
Can optionally be configured to allow only registered users to post
pages; online user registration form, etc.
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Discussion pages
Thanks to subpages, every page can easily and automatically have a
/Discussion subpage. By default, these links are included in the
[[templates]] for each page.
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Smart merging and conflict resolution in your web browser
Since it uses subversion, ikiwiki takes advantage of its smart merging to
avoid any conflicts when two people edit different parts of the same page
at the same time. No annoying warnings about other editors, or locking,
etc, instead the other person's changes will be automatically merged with
yours when you commit.
In the rare cases where automatic merging fails due to the same part of a
page being concurrently edited, regular subversion commit markers are
shown in the file to resolve the conflict, so if you're already familiar
with that there's no new commit marker syntax to learn.
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page locking
Wiki admins can lock pages so that only other admins can edit them.
It also has some [[TODO]] items and [[Bugs]].
