copy --auto was checking the wrong repo's preferred content. (--from was checking what --to should, and vice-versa.) Fixed this bug, which was introduced in version 5.20150727.

Command/Copy.hs

@@ -52,7 +52,7 @@ start o file key = stopUnless shouldCopy $
 		| autoMode o = want <||> numCopiesCheck file key (<)
 		| otherwise = return True
 	want = case Command.Move.fromToOptions (moveOptions o) of
-		ToRemote _ -> 
+		ToRemote dest -> (Remote.uuid <$> getParsed dest) >>=
-			wantGet False (Just key) (Just file)
-		FromRemote dest -> (Remote.uuid <$> getParsed dest) >>=
 			wantSend False (Just key) (Just file)
+		FromRemote _ ->
+			wantGet False (Just key) (Just file)

debian/changelog

@@ -13,6 +13,9 @@ git-annex (5.20150931) UNRELEASED; urgency=medium
   * Ported disk free space checking code to work on Solaris.
   * Windows webapp: Fix support for entering password when setting
     up a ssh remote.
+  * copy --auto was checking the wrong repo's preferred content.
+    (--from was checking what --to should, and vice-versa.)
+    Fixed this bug, which was introduced in version 5.20150727.
 
  -- Joey Hess <id@joeyh.name>  Thu, 01 Oct 2015 12:42:56 -0400
 

doc/bugs/git_annex_preferred_content_strange_behavior.mdwn

@@ -49,3 +49,5 @@ git annex copy --to b --auto # now, it copies the file to b. Why ??
 ### 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)
 
 Definitely! git-annex is a wonderful tool that I have been using every day to manage all my files for 2 years now. Thank you for this excellent software.
+
+> [[fixed|done]] --[[Joey]]

doc/bugs/git_annex_preferred_content_strange_behavior/comment_4_6e0f6ec54098f6e8fde80f733dd9c124._comment

@@ -0,0 +1,8 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 4"""
+ date="2015-10-06T21:28:43Z"
+ content="""
+Indeed, the logic got switched to opposite it should during the
+optparse-applicative transition.
+"""]]