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-rw-r--r--doc/bugs/svn_fails_to_update.mdwn20
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/bugs/svn_fails_to_update.mdwn b/doc/bugs/svn_fails_to_update.mdwn
index 1597ce6bc..fda003a44 100644
--- a/doc/bugs/svn_fails_to_update.mdwn
+++ b/doc/bugs/svn_fails_to_update.mdwn
@@ -51,3 +51,23 @@ but *does* happen when committing from the web.
>>> 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 \ No newline at end of file