-# A few bits about the RCS backends
+A few bits about the RCS backends
+
+[[toc ]]
## Terminology
(To be continued.)
+#### Another possible approach
+
+Here's what I (tuomov) think, would be a “cleaner” approach:
+
+ 1. Upon starting to edit, Ikiwiki gets a copy of the page, and `darcs changes --context`.
+ This context _and_ the present version of the page are stored in as the “version” of the
+ page in a hidden control of the HTML.
+ Thus the HTML includes all that is needed to generate a patch wrt. to the state of the
+ repository at the time the edit was started. This is of course all that darcs needs.
+ 2. Once the user is done with editing, _Ikiwiki generates a patch bundle_ for darcs.
+ This should be easy with existing `Text::Diff` or somesuch modules, as the Web edits
+ only concern single files. The reason why the old version of the page is stored in
+ the HTML (possibly compressed) is that the diff can be generated.
+ 3. Now this patch bundle is applied with `darcs apply`, or sent by email for moderation…
+ there are many possibilities.
+
+This approach avoids some of the problems of concurrent edits that the previous one may have,
+although there may be conflicts, which may or may not propagate to the displayed web page.
+(Unfortunately there is not an option to `darcs apply` to generate some sort of ‘confliction resolution
+bundle’.) Also, only one repository is needed, as it is never directly modified
+by Ikiwiki.
+
+This approach might be applicable to other distributed VCSs as well, although they're not as oriented
+towards transmitting changes with standalone patch bundles (often by email) as darcs is.
## [[Git]]
part). GIT doesn't have a similar functionality like 'svn merge -rOLD:NEW
FILE' (please see the relevant comment in mergepast for more details), so I
had to invent an ugly hack just for the purpose.
+
+## [mercurial](http://www.selenic.com/mercurial/)
+
+Being worked on by Emanuele Aina.
+
+<http://techn.ocracy.org/ikiwiki>