largefiles: update largefiles even if rebase is aborted by conflict Before this patch, largefiles in the working directory aren't updated correctly, if rebase is aborted by conflict. This prevents users from viewing appropriate largefiles while resolving conflicts. While rebase, largefiles in the working directory are updated only at successful committing in the special code path of "lfilesrepo.commit()". To update largefiles even if rebase is aborted by conflict, this patch centralizes the logic of updating largefiles in the working directory into the "mergeupdate" wrapping "merge.update". This is a temporary way to fix with less changes. For fundamental resolution of this kind of problems in the future, largefiles in the working directory should be updated with other (normal) files simultaneously while "merge.update" execution: maybe by hooking "applyupdates". "Action list based updating" introduced by hooking "applyupdates" will also improve performance of updating, because it automatically decreases target files to be checked. Just after this patch, there are some improper things in "Case 0" code path of "lfilesrepo.commit()": - "updatelfiles" invocation is redundant for rebase - detailed comment doesn't meet to rebase behavior These will be resolved after the subsequent patch for transplant, because this code path is shared with transplant. Even though replacing "merge.update" in rebase extension by "hg.merge" can also avoid this problem, this patch chooses centralizing the logic into "mergeupdate", because: - "merge.update" invocation in rebase extension can't be directly replaced by "hg.merge", because: - rebase requires some extra arguments, which "hg.merge" doesn't take (e.g. "ancestor") - rebase doesn't require statistics information forcibly displayed in "hg.merge" - introducing "mergeupdate" can resolve also problem of some other code paths directly using "merge.update" largefiles in the working directory aren't updated regardless of the result of commands below, before this patch: - backout (for revisions other than the parent revision of the working directory without "--merge") - graft - histedit (for revisions other than the parent of the working directory When "partial" is specified, "merge.update" doesn't update dirstate entries for standins, even though standins themselves are updated. In this case, "normallookup" should be used to mark largefiles as "possibly dirty" forcibly, because applying "normal" on lfdirstate treats them as "clean" unexpectedly. This is reason why "normallookup=partial" is specified for "lfcommands.updatelfiles". This patch doesn't test "hg rebase --continue", because it doesn't work correctly if largefiles in the working directory are modified manually while resolving conflicts. This will be fixed in the next step of refactoring for largefiles. All changes of tests/*.t files other than test-largefiles-update.t in this patch come from invoking "updatelfiles" not after but before statistics output of "hg.update", "hg.clean" and "hg.merge".

--- a/tests/test-largefiles.t	Sun Aug 24 23:47:26 2014 +0900
+++ b/tests/test-largefiles.t	Sun Aug 24 23:47:26 2014 +0900
@@ -1603,11 +1603,11 @@
   A f
   created new head
   $ hg merge -r 6
-  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  (branch merge, don't forget to commit)
   getting changed largefiles
   large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file:/*/$TESTTMP/d (glob)
   1 largefiles updated, 0 removed
+  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
 
   $ hg rollback -q
   $ hg up -Cq
@@ -1661,10 +1661,10 @@
   ancestor was 971fb41e78fea4f8e0ba5244784239371cb00591
   keep (l)ocal d846f26643bfa8ec210be40cc93cc6b7ff1128ea or
   take (o)ther e166e74c7303192238d60af5a9c4ce9bef0b7928? l
+  getting changed largefiles
+  1 largefiles updated, 0 removed
   3 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
-  getting changed largefiles
-  1 largefiles updated, 0 removed
   $ hg commit -m "Merge repos e and f"
   Invoking status precommit hook
   M normal3
@@ -1695,10 +1695,10 @@
   M normal3
   created new head
   $ hg merge
+  getting changed largefiles
+  1 largefiles updated, 0 removed
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
-  getting changed largefiles
-  1 largefiles updated, 0 removed
   $ hg status
   M large
 
@@ -1742,7 +1742,7 @@
   adding file changes
   added 1 changesets with 2 changes to 2 files
   getting changed largefiles
-  1 largefiles updated, 0 removed
+  0 largefiles updated, 0 removed
   $ hg log --template '{rev}:{node|short}  {desc|firstline}\n'
   9:598410d3eb9a  modify normal file largefile in repo d
   8:a381d2c8c80e  modify normal file and largefile in repo b