fix webdav reversion

webdav: When initializing, avoid trying to make a directory at the top of
the webdav server, which could never accomplish anything and failed on
nextcloud servers. (Reversion introduced in version 6.20170925.)

This commit was sponsored by mo on patreon.

CHANGELOG

@@ -10,6 +10,9 @@ git-annex (7.20181206) UNRELEASED; urgency=medium
   * add, import, findref: Support --time-limit.
   * Add --branch option to git-annex find and mildly deprecate findref in
     favor of it.
+  * webdav: When initializing, avoid trying to make a directory at the top of
+    the webdav server, which could never accomplish anything and failed on
+    nextcloud servers. (Reversion introduced in version 6.20170925.)
 
  -- Joey Hess <id@joeyh.name>  Thu, 06 Dec 2018 13:39:16 -0400
 

Remote/WebDAV.hs

@@ -274,7 +274,6 @@ testDav url (Just (u, p)) = do
 	test $ liftIO $ evalDAVT url $ do
 		prepDAV user pass
 		makeParentDirs
-		void $ mkColRecursive "/"
 		inLocation (tmpLocation "test") $ do
 			putContentM (Nothing, L8.fromString "test")
 			delContentM

doc/bugs/cannot_talk_with_nextcloud_server.mdwn

@@ -128,3 +128,7 @@ Incidentally, the [[tips/owncloudannex]] remote also [fails](https://github.com/
 ### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
 
 I use git-annex every day! I hope to write a glowing review for LWN soon. ;) Cheers and hi joey! :)
+
+> So the problem is code was changed a while ago to `mkColRecursive "/"`
+> which causes this wacky attempt to mkcol at the top of the server not
+> underneath the path of the url. [[fixed|done]] --[[Joey]]