It seems that with the current mercurial commit code, it will always
blindly overwrite the current file with the web edited version, losing
any other changes.
+* `rcs_commit_staged`, `rcs_rename`, `rcs_remove`, and `rcs_diff` are not
+ implemented for mercurial, and so attachments, remove and rename plugins
+ and recentchangesdiff cannot be used with it. (These should be fairly
+ easy to add..)
Posthook: in `$srcdir/.hg/hgrc`, I have the following
> It can deadlock if the post-commit hook runs with --refresh in the
> former case. --[[Joey]]
+The problem with --post-commit is that if you delete some pages in $SRC, ikiwiki --setup setupfile --post-commit will not delete them in $DEST. --[[users/weakish]]
+
+> You should really be using a setup file that has `mercurial_wrapper`
+> set, and running the wrapper generated by that from your hook.
+> That will work. I think that the `--setup --post-commit` on the command
+> line is currently broken and does the same expensive rebuild process as --setup
+> alone (which doesn't delete files from $DEST either). Will fix that.
+> (fixed)
+> --[[Joey]]
+
+>> Mercurial doesn't support put hooks in .hg/hooks/* (like git). In Mercurial, the only way to run
+>> your own hooks is specifying them in the hgrc file. (Or write a new extension.)
+>> I guess use a very long command will work.
+>> (e.g. ikiwiki --post-commit --a-lot-of-switches --set var=value $SRC $DEST)
+>> (Fortunately ikiwiki supports --set var=value so without --setup works.)
+>>
+>> Alternative is always editing via cgi or pushing. Never work on the $SRC/repo directly.
+>> --[[users/weakish]]
+
+>>> I don't see anything preventing you from using a setup file with
+>>> `mercurial_wrapper => ".hg/ikiwiki-hook",` and then modifying the hgrc
+>>> to run that wrapper. --[[Joey]]
+
+>> Thanks for pointing out this. I have some stupid misunderstanding on the
+>> usage of mercurial_wrapper before. The wrapper works nicely! --[[weakish]]
+
+I add the following to .hg/hgrc:(I use changegroup since I don't think we need refresh per changeset, please point out if I am wrong.)
+
+ [hooks]
+ changegroup = hg update >&2 && ikiwiki --setup path.to.setup.file --refresh
+ post-commit = path.to.the.mercurial.wrapper
+
+-----
+
+I have no idea when the deadlock will happen. --[[users/weakish]]
+
+> For the deadlock to occur, a edit has to be made via the web.
+>
+> Ikiwiki,
+> running as a CGI, takes a lock on the wiki, and commits the edit,
+> continuing to run in the background, with the lock still held.
+> When the edit is committed, the hg hook runs, running `ikwiki --refresh`.
+> Nearly the first thing that process does it try to lock the wiki..
+> which is already locked. This lock is taken in a blocking manner,
+> thus the deadlock -- the cgi is waiting for the commit to finish before
+> dropping the lock, and the commit is blocked waiting for the lock to be
+> released.
+>
+> --post-commit avoids this problem by checking if the cgi is running
+> and avoiding doing anything in that case. (While still handing the
+> refresh if the commit was not made by the CGI.)
+> So in that case, the commit finishes w/o ikiwiki doing anything,
+> and the ikiwiki CGI handles the wiki refresh.
+> --[[Joey]]
+
+
***
I have a few notes on mercurial usage after trying it out for a while: