Additional note: this doesn't happen when performing svn commits from another wc,
but *does* happen when committing from the web.
---Ethan
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+--Ethan
+
+> Yeah, this makes sense now that you bring it up. Perhaps I should make
+> ikiwiki skip the update when called from the post-commit hook if the repo
+> is locked, although this could mask other problems.. --[[Joey]]
+
+>> I don't think it's (yet) a serious problem, because any commit to the repo
+>> either comes from another WC, in which case, no problem, or it is committed by
+>> ikiwiki through its own WC, in which case that WC is "the newest". The only problem
+>> is that ikiwiki's rcs information for web commits gets screwed up. I think the
+>> correct fix is to call rcs_update from rcs_commit in svn.pm, if
+>> the commit succeeds. I'm not sure whether this ought to happen for all RCSes
+>> or just svn. --Ethan
+
+>>> You say that the rcs information for web commits is screwed up .. how?
+>>> Does this affect something that I'm not seeing? --[[Joey]]
+
+I just meant that when you call ikiwiki.cgi?do=edit, it gets the
+"current" RCS revision, and uses that in the merges later if there
+are other edits in the meantime. So I guess if you have a file a.mdwn,
+and at revision X it contains the list:
+
+ a
+ b
+ c
+ d
+
+And then one user edits it by removing "c" from web, and
+then starts editing it again, ikiwiki.cgi will think the edit "started"
+at revision X (although it's really X+1). So if another user edits via
+web in the meantime, the subsequent merge will try to remove "c" again.
+To be honest I don't know what will happen in this case (svn merge fails?
+conflict markers?), but I'm pretty sure it's a problem. Anyhow, I think we
+should call update manually after commit, I just don't know if this should
+be RCS-specific, or whether it's safe to update after commit on all RCSes.
+--Ethan
+
+Hmm, turns out that isn't the case! svn's prepedit function calls svn info
+which gets the "right" information even when the WC isn't current. I am
+having problems merging but that probably has nothing to do with this bug.
+[This patch](http://ikidev.betacantrips.com/patches/update.patch) calls
+rcs_update after commit in CGI.pm, it might be a good idea anyhow. --Ethan
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