Merge branch 'ta/doc-cleanup' into maint

* ta/doc-cleanup:
  Documentation: build html for all files in technical and howto
  Documentation/howto: convert plain text files to asciidoc
  Documentation/technical: convert plain text files to asciidoc
  Change headline of technical/send-pack-pipeline.txt to not confuse its content with content from git-send-pack.txt
  Shorten two over-long lines in git-bisect-lk2009.txt by abbreviating some sha1
  Split over-long synopsis in git-fetch-pack.txt into several lines

20 files changed, 134 insertions, 68 deletions

diff --git a/Documentation/Makefile b/Documentation/Makefile
index b81df682d9..fe9a91d6a3 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -24,8 +24,30 @@ SP_ARTICLES = user-manual
 SP_ARTICLES += howto/revert-branch-rebase
 SP_ARTICLES += howto/using-merge-subtree
 SP_ARTICLES += howto/using-signed-tag-in-pull-request
+SP_ARTICLES += howto/use-git-daemon
+SP_ARTICLES += howto/update-hook-example
+SP_ARTICLES += howto/setup-git-server-over-http
+SP_ARTICLES += howto/separating-topic-branches
+SP_ARTICLES += howto/revert-a-faulty-merge
+SP_ARTICLES += howto/recover-corrupted-blob-object
+SP_ARTICLES += howto/rebuild-from-update-hook
+SP_ARTICLES += howto/rebuild-from-update-hook
+SP_ARTICLES += howto/rebase-from-internal-branch
+SP_ARTICLES += howto/maintain-git
 API_DOCS = $(patsubst %.txt,%,$(filter-out technical/api-index-skel.txt technical/api-index.txt, $(wildcard technical/api-*.txt)))
 SP_ARTICLES += $(API_DOCS)
+
+TECH_DOCS = technical/index-format
+TECH_DOCS += technical/pack-format
+TECH_DOCS += technical/pack-heuristics
+TECH_DOCS += technical/pack-protocol
+TECH_DOCS += technical/protocol-capabilities
+TECH_DOCS += technical/protocol-common
+TECH_DOCS += technical/racy-git
+TECH_DOCS += technical/send-pack-pipeline
+TECH_DOCS += technical/shallow
+TECH_DOCS += technical/trivial-merge
+SP_ARTICLES += $(TECH_DOCS)
 SP_ARTICLES += technical/api-index
 
 DOC_HTML += $(patsubst %,%.html,$(ARTICLES) $(SP_ARTICLES))
@@ -231,7 +253,7 @@ clean:
 	$(RM) *.texi *.texi+ *.texi++ git.info gitman.info
 	$(RM) *.pdf
 	$(RM) howto-index.txt howto/*.html doc.dep
-	$(RM) technical/api-*.html technical/api-index.txt
+	$(RM) technical/*.html technical/api-index.txt
 	$(RM) $(cmds_txt) *.made
 	$(RM) manpage-base-url.xsl
 
@@ -264,7 +286,7 @@ technical/api-index.txt: technical/api-index-skel.txt \
 	$(QUIET_GEN)cd technical && '$(SHELL_PATH_SQ)' ./api-index.sh
 
 technical/%.html: ASCIIDOC_EXTRA += -a git-relative-html-prefix=../
-$(patsubst %,%.html,$(API_DOCS) technical/api-index): %.html : %.txt
+$(patsubst %,%.html,$(API_DOCS) technical/api-index $(TECH_DOCS)): %.html : %.txt
 	$(QUIET_ASCIIDOC)$(ASCIIDOC) -b xhtml11 -f asciidoc.conf \
 		$(ASCIIDOC_EXTRA) -agit_version=$(GIT_VERSION) $*.txt
 
diff --git a/Documentation/git-bisect-lk2009.txt b/Documentation/git-bisect-lk2009.txt
index 8a2ba37904..ec4497e098 100644
--- a/Documentation/git-bisect-lk2009.txt
+++ b/Documentation/git-bisect-lk2009.txt
@@ -257,7 +257,7 @@ Date:   Sat May 3 11:59:44 2008 -0700
 
     Linux 2.6.26-rc1
 
-:100644 100644 5cf8258195331a4dbdddff08b8d68642638eea57 4492984efc09ab72ff6219a7bc21fb6a957c4cd5 M      Makefile
+:100644 100644 5cf82581... 4492984e... M      Makefile
 -------------
 
 At this point we can see what the commit does, check it out (if it's
@@ -331,7 +331,7 @@ Date:   Sat May 3 11:59:44 2008 -0700
 
     Linux 2.6.26-rc1
 
-:100644 100644 5cf8258195331a4dbdddff08b8d68642638eea57 4492984efc09ab72ff6219a7bc21fb6a957c4cd5 M      Makefile
+:100644 100644 5cf82581... 4492984e... M      Makefile
 bisect run success
 -------------
 
diff --git a/Documentation/git-fetch-pack.txt b/Documentation/git-fetch-pack.txt
index 474fa307a0..8c751202d7 100644
--- a/Documentation/git-fetch-pack.txt
+++ b/Documentation/git-fetch-pack.txt
@@ -9,7 +9,10 @@ git-fetch-pack - Receive missing objects from another repository
 SYNOPSIS
 --------
 [verse]
-'git fetch-pack' [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]
+'git fetch-pack' [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag]
+				[--upload-pack=<git-upload-pack>]
+				[--depth=<n>] [--no-progress]
+				[-v] [<host>:]<directory> [<refs>...]
 
 DESCRIPTION
 -----------
diff --git a/Documentation/howto/maintain-git.txt b/Documentation/howto/maintain-git.txt
index 8823a37067..ea6e4a52c9 100644
--- a/Documentation/howto/maintain-git.txt
+++ b/Documentation/howto/maintain-git.txt
@@ -5,6 +5,10 @@ Abstract: Imagine that git development is racing along as usual, when our friend
  neighborhood maintainer is struck down by a wayward bus. Out of the
  hordes of suckers (loyal developers), you have been tricked (chosen) to
  step up as the new maintainer. This howto will show you "how to" do it.
+Content-type: text/asciidoc
+
+How to maintain Git
+===================
 
 The maintainer's git time is spent on three activities.
 
diff --git a/Documentation/howto/rebase-from-internal-branch.txt b/Documentation/howto/rebase-from-internal-branch.txt
index 74a1c0c4ba..4627ee47f2 100644
--- a/Documentation/howto/rebase-from-internal-branch.txt
+++ b/Documentation/howto/rebase-from-internal-branch.txt
@@ -8,7 +8,12 @@ Abstract: In this article, JC talks about how he rebases the
  the "master" branch, and how "rebase" works.  Also discussed
  is how this applies to individual developers who sends patches
  upstream.
+Content-type: text/asciidoc
 
+How to rebase from an internal branch
+=====================================
+
+--------------------------------------
 Petr Baudis <pasky@suse.cz> writes:
 
 > Dear diary, on Sun, Aug 14, 2005 at 09:57:13AM CEST, I got a letter
@@ -19,6 +24,7 @@ Petr Baudis <pasky@suse.cz> writes:
 >> > branch to the real branches.
 >>
 > Actually, wouldn't this be also precisely for what StGIT is intended to?
+--------------------------------------
 
 Exactly my feeling.  I was sort of waiting for Catalin to speak
 up.  With its basing philosophical ancestry on quilt, this is
@@ -156,8 +162,3 @@ you continue on starting from the new "master" head, which is
 the #1' commit.
 
 -jc
-
--
-To unsubscribe from this list: send the line "unsubscribe git" in
-the body of a message to majordomo@vger.kernel.org
-More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/howto/rebuild-from-update-hook.txt b/Documentation/howto/rebuild-from-update-hook.txt
index 48c67568d3..00c1b45b79 100644
--- a/Documentation/howto/rebuild-from-update-hook.txt
+++ b/Documentation/howto/rebuild-from-update-hook.txt
@@ -5,6 +5,10 @@ Date: Fri, 26 Aug 2005 18:19:10 -0700
 Abstract: In this how-to article, JC talks about how he
  uses the post-update hook to automate git documentation page
  shown at http://www.kernel.org/pub/software/scm/git/docs/.
+Content-type: text/asciidoc
+
+How to rebuild from update hook
+===============================
 
 The pages under http://www.kernel.org/pub/software/scm/git/docs/
 are built from Documentation/ directory of the git.git project
diff --git a/Documentation/howto/recover-corrupted-blob-object.txt b/Documentation/howto/recover-corrupted-blob-object.txt
index 323b513ed0..7484735320 100644
--- a/Documentation/howto/recover-corrupted-blob-object.txt
+++ b/Documentation/howto/recover-corrupted-blob-object.txt
@@ -3,11 +3,17 @@ From: Linus Torvalds <torvalds@linux-foundation.org>
 Subject: corrupt object on git-gc
 Abstract: Some tricks to reconstruct blob objects in order to fix
  a corrupted repository.
+Content-type: text/asciidoc
 
+How to recover a corrupted blob object
+======================================
+
+-----------------------------------------------------------
 On Fri, 9 Nov 2007, Yossi Leybovich wrote:
 >
 > Did not help still the repository look for this object?
 > Any one know how can I track this object and understand which file is it
+-----------------------------------------------------------
 
 So exactly *because* the SHA1 hash is cryptographically secure, the hash
 itself doesn't actually tell you anything, in order to fix a corrupt
@@ -31,19 +37,23 @@ original object, so right now the corrupt object is useless, but it's very
 interesting for the future, in the hope that you can re-create a
 non-corrupt version.
 
+-----------------------------------------------------------
 So:
 
 > ib]$ mv .git/objects/4b/9458b3786228369c63936db65827de3cc06200 ../
+-----------------------------------------------------------
 
 This is the right thing to do, although it's usually best to save it under
 it's full SHA1 name (you just dropped the "4b" from the result ;).
 
 Let's see what that tells us:
 
+-----------------------------------------------------------
 > ib]$ git-fsck --full
 > broken link from    tree 2d9263c6d23595e7cb2a21e5ebbb53655278dff8
 >              to    blob 4b9458b3786228369c63936db65827de3cc06200
 > missing blob 4b9458b3786228369c63936db65827de3cc06200
+-----------------------------------------------------------
 
 Ok, I removed the "dangling commit" messages, because they are just
 messages about the fact that you probably have rebased etc, so they're not
diff --git a/Documentation/howto/revert-a-faulty-merge.txt b/Documentation/howto/revert-a-faulty-merge.txt
index 6fd711996a..8a685483f4 100644
--- a/Documentation/howto/revert-a-faulty-merge.txt
+++ b/Documentation/howto/revert-a-faulty-merge.txt
@@ -7,6 +7,10 @@ Abstract: Sometimes a branch that was already merged to the mainline
  after the offending branch is fixed.
 Message-ID: <7vocz8a6zk.fsf@gitster.siamese.dyndns.org>
 References: <alpine.LFD.2.00.0812181949450.14014@localhost.localdomain>
+Content-type: text/asciidoc
+
+How to revert a faulty merge
+============================
 
 Alan <alan@clueserver.org> said:
 
diff --git a/Documentation/howto/revert-branch-rebase.txt b/Documentation/howto/revert-branch-rebase.txt
index 093c656048..a59ced8d04 100644
--- a/Documentation/howto/revert-branch-rebase.txt
+++ b/Documentation/howto/revert-branch-rebase.txt
@@ -8,8 +8,8 @@ Date: Mon, 29 Aug 2005 21:39:02 -0700
 Content-type: text/asciidoc
 Message-ID: <7voe7g3uop.fsf@assigned-by-dhcp.cox.net>
 
-Reverting an existing commit
-============================
+How to revert an existing commit
+================================
 
 One of the changes I pulled into the 'master' branch turns out to
 break building GIT with GCC 2.95.  While they were well intentioned
diff --git a/Documentation/howto/separating-topic-branches.txt b/Documentation/howto/separating-topic-branches.txt
index 6d3eb8ed00..bd1027433b 100644
--- a/Documentation/howto/separating-topic-branches.txt
+++ b/Documentation/howto/separating-topic-branches.txt
@@ -1,6 +1,10 @@
 From: Junio C Hamano <gitster@pobox.com>
 Subject: Separating topic branches
 Abstract: In this article, JC describes how to separate topic branches.
+Content-type: text/asciidoc
+
+How to separate topic branches
+==============================
 
 This text was originally a footnote to a discussion about the
 behaviour of the git diff commands.
diff --git a/Documentation/howto/setup-git-server-over-http.txt b/Documentation/howto/setup-git-server-over-http.txt
index 622ee5c8dd..a695f01f0e 100644
--- a/Documentation/howto/setup-git-server-over-http.txt
+++ b/Documentation/howto/setup-git-server-over-http.txt
@@ -1,6 +1,10 @@
 From: Rutger Nijlunsing <rutger@nospam.com>
 Subject: Setting up a git repository which can be pushed into and pulled from over HTTP(S).
 Date: Thu, 10 Aug 2006 22:00:26 +0200
+Content-type: text/asciidoc
+
+How to setup git server over http
+=================================
 
 Since Apache is one of those packages people like to compile
 themselves while others prefer the bureaucrat's dream Debian, it is
diff --git a/Documentation/howto/update-hook-example.txt b/Documentation/howto/update-hook-example.txt
index b7f8d416d6..a5193b1e5c 100644
--- a/Documentation/howto/update-hook-example.txt
+++ b/Documentation/howto/update-hook-example.txt
@@ -5,6 +5,10 @@ Message-ID: <7vfypumlu3.fsf@assigned-by-dhcp.cox.net>
 Abstract: An example hooks/update script is presented to
  implement repository maintenance policies, such as who can push
  into which branch and who can make a tag.
+Content-type: text/asciidoc
+
+How to use the update hook
+==========================
 
 When your developer runs git-push into the repository,
 git-receive-pack is run (either locally or over ssh) as that
@@ -32,8 +36,7 @@ like this as your hooks/update script.
 [jc: editorial note.  This is a much improved version by Carl
 since I posted the original outline]
 
--- >8 -- beginning of script -- >8 --
-
+----------------------------------------------------
 #!/bin/bash
 
 umask 002
@@ -111,12 +114,12 @@ then
 
       info "Found matching head pattern: '$head_pattern'"
       for user_pattern in $user_patterns; do
-	info "Checking user: '$username' against pattern: '$user_pattern'"
-	matchlen=$(expr "$username" : "$user_pattern")
-	if test "$matchlen" = "${#username}"
-	then
-	  grant "Allowing user: '$username' with pattern: '$user_pattern'"
-	fi
+        info "Checking user: '$username' against pattern: '$user_pattern'"
+        matchlen=$(expr "$username" : "$user_pattern")
+        if test "$matchlen" = "${#username}"
+        then
+          grant "Allowing user: '$username' with pattern: '$user_pattern'"
+        fi
       done
       deny "The user is not in the access list for this branch"
     done
@@ -149,13 +152,13 @@ then
 
       info "Found matching head pattern: '$head_pattern'"
       for group_pattern in $group_patterns; do
-	for groupname in $groups; do
-	  info "Checking group: '$groupname' against pattern: '$group_pattern'"
-	  matchlen=$(expr "$groupname" : "$group_pattern")
-	  if test "$matchlen" = "${#groupname}"
-	  then
-	    grant "Allowing group: '$groupname' with pattern: '$group_pattern'"
-	  fi
+        for groupname in $groups; do
+          info "Checking group: '$groupname' against pattern: '$group_pattern'"
+          matchlen=$(expr "$groupname" : "$group_pattern")
+          if test "$matchlen" = "${#groupname}"
+          then
+            grant "Allowing group: '$groupname' with pattern: '$group_pattern'"
+          fi
         done
       done
       deny "None of the user's groups are in the access list for this branch"
@@ -169,24 +172,21 @@ then
 fi
 
 deny >/dev/null "There are no more rules to check.  Denying access"
-
--- >8 -- end of script -- >8 --
+----------------------------------------------------
 
 This uses two files, $GIT_DIR/info/allowed-users and
 allowed-groups, to describe which heads can be pushed into by
 whom.  The format of each file would look like this:
 
-        refs/heads/master	junio
-	+refs/heads/pu		junio
-        refs/heads/cogito$	pasky
-        refs/heads/bw/.*	linus
-        refs/heads/tmp/.*	.*
-        refs/tags/v[0-9].*	junio
+    refs/heads/master   junio
+    +refs/heads/pu      junio
+    refs/heads/cogito$  pasky
+    refs/heads/bw/.*    linus
+    refs/heads/tmp/.*   .*
+    refs/tags/v[0-9].*  junio
 
 With this, Linus can push or create "bw/penguin" or "bw/zebra"
 or "bw/panda" branches, Pasky can do only "cogito", and JC can
 do master and pu branches and make versioned tags.  And anybody
 can do tmp/blah branches. The '+' sign at the pu record means
 that JC can make non-fast-forward pushes on it.
-
-------------
diff --git a/Documentation/howto/use-git-daemon.txt b/Documentation/howto/use-git-daemon.txt
index 4e2f75cb61..23cdf35435 100644
--- a/Documentation/howto/use-git-daemon.txt
+++ b/Documentation/howto/use-git-daemon.txt
@@ -1,4 +1,7 @@
+Content-type: text/asciidoc
+
 How to use git-daemon
+=====================
 
 Git can be run in inetd mode and in stand alone mode. But all you want is
 let a coworker pull from you, and therefore need to set up a git server
diff --git a/Documentation/howto/using-signed-tag-in-pull-request.txt b/Documentation/howto/using-signed-tag-in-pull-request.txt
index 98c0033a55..00f693bde8 100644
--- a/Documentation/howto/using-signed-tag-in-pull-request.txt
+++ b/Documentation/howto/using-signed-tag-in-pull-request.txt
@@ -7,8 +7,8 @@ Abstract: Beginning v1.7.9, a contributor can push a signed tag to her
  later validate it.
 Content-type: text/asciidoc
 
-Using signed tag in pull requests
-=================================
+How to use a signed tag in pull requests
+========================================
 
 A typical distributed workflow using Git is for a contributor to fork a
 project, build on it, publish the result to her public repository, and ask
diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt
index 9d25b30178..57d6f915b1 100644
--- a/Documentation/technical/index-format.txt
+++ b/Documentation/technical/index-format.txt
@@ -1,7 +1,7 @@
 GIT index format
 ================
 
-= The git index file has the following format
+== The git index file has the following format
 
   All binary numbers are in network byte order. Version 2 is described
   here unless stated otherwise.
diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt
index 1803e64e46..a7871fb865 100644
--- a/Documentation/technical/pack-format.txt
+++ b/Documentation/technical/pack-format.txt
@@ -1,7 +1,7 @@
 GIT pack format
 ===============
 
-= pack-*.pack files have the following format:
+== pack-*.pack files have the following format:
 
    - A header appears at the beginning and consists of the following:
 
@@ -34,7 +34,7 @@ GIT pack format
 
   - The trailer records 20-byte SHA1 checksum of all of the above.
 
-= Original (version 1) pack-*.idx files have the following format:
+== Original (version 1) pack-*.idx files have the following format:
 
   - The header consists of 256 4-byte network byte order
     integers.  N-th entry of this table records the number of
@@ -123,8 +123,8 @@ Pack file entry: <+
 
 
 
-= Version 2 pack-*.idx files support packs larger than 4 GiB, and
-  have some other reorganizations.  They have the format:
+== Version 2 pack-*.idx files support packs larger than 4 GiB, and
+   have some other reorganizations.  They have the format:
 
   - A 4-byte magic number '\377tOc' which is an unreasonable
     fanout[0] value.
diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt
index d51e20f352..f1a51edf47 100644
--- a/Documentation/technical/pack-protocol.txt
+++ b/Documentation/technical/pack-protocol.txt
@@ -117,7 +117,7 @@ A few things to remember here:
 - The repository path is always quoted with single quotes.
 
 Fetching Data From a Server
-===========================
+---------------------------
 
 When one Git repository wants to get data that a second repository
 has, the first can 'fetch' from the second.  This operation determines
@@ -134,7 +134,8 @@ with the object name that each reference currently points to.
 
    $ echo -e -n "0039git-upload-pack /schacon/gitbook.git\0host=example.com\0" |
       nc -v example.com 9418
-   00887217a7c7e582c46cec22a130adf4b9d7d950fba0 HEAD\0multi_ack thin-pack side-band side-band-64k ofs-delta shallow no-progress include-tag
+   00887217a7c7e582c46cec22a130adf4b9d7d950fba0 HEAD\0multi_ack thin-pack
+		side-band side-band-64k ofs-delta shallow no-progress include-tag
    00441d3fcd5ced445d1abc402225c0b8a1299641f497 refs/heads/integration
    003f7217a7c7e582c46cec22a130adf4b9d7d950fba0 refs/heads/master
    003cb88d2441cac0977faf98efc80305012112238d9d refs/tags/v0.9
@@ -421,7 +422,7 @@ entire packfile without multiplexing.
 
 
 Pushing Data To a Server
-========================
+------------------------
 
 Pushing data to a server will invoke the 'receive-pack' process on the
 server, which will allow the client to tell it which references it should
diff --git a/Documentation/technical/send-pack-pipeline.txt b/Documentation/technical/send-pack-pipeline.txt
index 681efe4219..9b5a0bc186 100644
--- a/Documentation/technical/send-pack-pipeline.txt
+++ b/Documentation/technical/send-pack-pipeline.txt
@@ -1,5 +1,5 @@
-git-send-pack
-=============
+Git-send-pack internals
+=======================
 
 Overall operation
 -----------------
diff --git a/Documentation/technical/shallow.txt b/Documentation/technical/shallow.txt
index 559263af48..0502a5471e 100644
--- a/Documentation/technical/shallow.txt
+++ b/Documentation/technical/shallow.txt
@@ -1,6 +1,12 @@
-Def.: Shallow commits do have parents, but not in the shallow
+Shallow commits
+===============
+
+.Definition
+*********************************************************
+Shallow commits do have parents, but not in the shallow
 repo, and therefore grafts are introduced pretending that
 these commits have no parents.
+*********************************************************
 
 The basic idea is to write the SHA1s of shallow commits into
 $GIT_DIR/shallow, and handle its contents like the contents
diff --git a/Documentation/technical/trivial-merge.txt b/Documentation/technical/trivial-merge.txt
index 24c84100b0..c79d4a7c47 100644
--- a/Documentation/technical/trivial-merge.txt
+++ b/Documentation/technical/trivial-merge.txt
@@ -74,24 +74,24 @@ For multiple ancestors, a '+' means that this case applies even if
 only one ancestor or remote fits; a '^' means all of the ancestors
 must be the same.
 
-case  ancest    head    remote    result
-----------------------------------------
-1     (empty)+  (empty) (empty)   (empty)
-2ALT  (empty)+  *empty* remote    remote
-2     (empty)^  (empty) remote    no merge
-3ALT  (empty)+  head    *empty*   head
-3     (empty)^  head    (empty)   no merge
-4     (empty)^  head    remote    no merge
-5ALT  *         head    head      head
-6     ancest+   (empty) (empty)   no merge
-8     ancest^   (empty) ancest    no merge
-7     ancest+   (empty) remote    no merge
-10    ancest^   ancest  (empty)   no merge
-9     ancest+   head    (empty)   no merge
-16    anc1/anc2 anc1    anc2      no merge
-13    ancest+   head    ancest    head
-14    ancest+   ancest  remote    remote
-11    ancest+   head    remote    no merge
+ case  ancest    head    remote    result
+ ----------------------------------------
+ 1     (empty)+  (empty) (empty)   (empty)
+ 2ALT  (empty)+  *empty* remote    remote
+ 2     (empty)^  (empty) remote    no merge
+ 3ALT  (empty)+  head    *empty*   head
+ 3     (empty)^  head    (empty)   no merge
+ 4     (empty)^  head    remote    no merge
+ 5ALT  *         head    head      head
+ 6     ancest+   (empty) (empty)   no merge
+ 8     ancest^   (empty) ancest    no merge
+ 7     ancest+   (empty) remote    no merge
+ 10    ancest^   ancest  (empty)   no merge
+ 9     ancest+   head    (empty)   no merge
+ 16    anc1/anc2 anc1    anc2      no merge
+ 13    ancest+   head    ancest    head
+ 14    ancest+   ancest  remote    remote
+ 11    ancest+   head    remote    no merge
 
 Only #2ALT and #3ALT use *empty*, because these are the only cases
 where there can be conflicts that didn't exist before. Note that we