Merge branch 'master' into next

* master:
  Log ref changes made by git-fetch and git-pull.
  Record the type of commit operation in the reflog.
  Allow user.name and user.email to drive reflog entry.
  Fix linking for not-so-clever linkers.
  git-rev-list: add documentation for --parents, --no-merges

Documentation/git-rev-list.txt

@@ -56,6 +56,9 @@ OPTIONS
 	Print the contents of the commit in raw-format; each
 	record is separated with a NUL character.
 
+--parents::
+	Print the parents of the commit.
+
 --objects::
 	Print the object IDs of any object referenced by the listed commits.
 	'git-rev-list --objects foo ^bar' thus means "send me all object IDs
@@ -102,6 +105,9 @@ OPTIONS
 --remove-empty::
 	Stop when a given path disappears from the tree.
 
+--no-merges::
+	Do not print commits with more than one parent.
+
 --not::
 	Reverses the meaning of the '{caret}' prefix (or lack
 	thereof) for all following revision specifiers, up to

builtin-update-ref.c

@@ -12,6 +12,7 @@ int cmd_update_ref(int argc, const char **argv, char **envp)
 	unsigned char sha1[20], oldsha1[20];
 	int i;
 
+	setup_ident();
 	setup_git_directory();
 	git_config(git_default_config);
 

environment.c

@@ -21,6 +21,7 @@ char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
 int shared_repository = PERM_UMASK;
 const char *apply_default_whitespace = NULL;
 int zlib_compression_level = Z_DEFAULT_COMPRESSION;
+int pager_in_use;
 
 static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
 	*git_graft_file;

git-commit.sh

@@ -635,9 +635,12 @@ fi
 PARENTS="-p HEAD"
 if test -z "$initial_commit"
 then
+	rloga='commit'
 	if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
+		rloga='commit (merge)'
 		PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
 	elif test -n "$amend"; then
+		rloga='commit (amend)'
 		PARENTS=$(git-cat-file commit HEAD |
 			sed -n -e '/^$/q' -e 's/^parent /-p /p')
 	fi
@@ -649,6 +652,7 @@ else
 	fi
 	PARENTS=""
 	current=
+	rloga='commit (initial)'
 fi
 
 if test -z "$no_edit"
@@ -724,7 +728,7 @@ then
 	fi &&
 	commit=$(cat "$GIT_DIR"/COMMIT_MSG | git-commit-tree $tree $PARENTS) &&
 	rlogm=$(sed -e 1q "$GIT_DIR"/COMMIT_MSG) &&
-	git-update-ref -m "commit: $rlogm" HEAD $commit $current &&
+	git-update-ref -m "$rloga: $rlogm" HEAD $commit $current &&
 	rm -f -- "$GIT_DIR/MERGE_HEAD" &&
 	if test -f "$NEXT_INDEX"
 	then

git-fetch.sh

@@ -11,6 +11,7 @@ LF='
 '
 IFS="$LF"
 
+rloga=fetch
 no_tags=
 tags=
 append=
@@ -51,6 +52,9 @@ do
 	-k|--k|--ke|--kee|--keep)
 		keep=--keep
 		;;
+	--reflog-action=*)
+		rloga=`expr "z$1" : 'z-[^=]*=\(.*\)'`
+		;;
 	-*)
 		usage
 		;;
@@ -75,6 +79,9 @@ refs=
 rref=
 rsync_slurped_objects=
 
+rloga="$rloga $remote_nick"
+test "$remote_nick" == "$remote" || rloga="$rloga $remote"
+
 if test "" = "$append"
 then
 	: >"$GIT_DIR/FETCH_HEAD"
@@ -149,11 +156,12 @@ fast_forward_local () {
 			[ "$verbose" ] && echo >&2 "* $1: same as $3"
 		else
 			echo >&2 "* $1: updating with $3"
+			git-update-ref -m "$rloga: updating tag" "$1" "$2"
 		fi
 	else
 		echo >&2 "* $1: storing $3"
+		git-update-ref -m "$rloga: storing tag" "$1" "$2"
 	fi
-	git-update-ref "$1" "$2"
 	;;
 
     refs/heads/* | refs/remotes/*)
@@ -174,7 +182,7 @@ fast_forward_local () {
 	    *,$local)
 		echo >&2 "* $1: fast forward to $3"
 		echo >&2 "  from $local to $2"
-		git-update-ref "$1" "$2" "$local"
+		git-update-ref -m "$rloga: fast-forward" "$1" "$2" "$local"
 		;;
 	    *)
 		false
@@ -184,7 +192,7 @@ fast_forward_local () {
 		case ",$force,$single_force," in
 		*,t,*)
 			echo >&2 "  forcing update."
-			git-update-ref "$1" "$2" "$local"
+			git-update-ref -m "$rloga: forced-update" "$1" "$2" "$local"
 			;;
 		*)
 			echo >&2 "  not updating."
@@ -194,7 +202,7 @@ fast_forward_local () {
 	    }
 	else
 	    echo >&2 "* $1: storing $3"
-	    git-update-ref "$1" "$2"
+	    git-update-ref -m "$rloga: storing head" "$1" "$2"
 	fi
 	;;
     esac
@@ -422,7 +430,9 @@ case ",$update_head_ok,$orig_head," in
 	curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
 	if test "$curr_head" != "$orig_head"
 	then
-	    	git-update-ref HEAD "$orig_head"
+	    git-update-ref \
+			-m "$rloga: Undoing incorrectly fetched HEAD." \
+			HEAD "$orig_head"
 		die "Cannot fetch into the current branch."
 	fi
 	;;

git-pull.sh

@@ -45,7 +45,7 @@ do
 done
 
 orig_head=$(git-rev-parse --verify HEAD) || die "Pulling into a black hole?"
-git-fetch --update-head-ok "$@" || exit 1
+git-fetch --update-head-ok --reflog-action=pull "$@" || exit 1
 
 curr_head=$(git-rev-parse --verify HEAD)
 if test "$curr_head" != "$orig_head"

pager.c

@@ -5,8 +5,6 @@
  * something different on Windows, for example.
  */
 
-int pager_in_use;
-
 static void run_pager(const char *pager)
 {
 	execlp(pager, pager, NULL);

refs.c

@@ -379,7 +379,6 @@ static int log_ref_write(struct ref_lock *lock,
 			lock->log_file, strerror(errno));
 	}
 
-	setup_ident();
 	committer = git_committer_info(1);
 	if (msg) {
 		maxlen = strlen(committer) + strlen(msg) + 2*40 + 5;

t/t1400-update-ref.sh

@@ -188,17 +188,30 @@ test_expect_success \
 	 echo OTHER >F &&
 	 GIT_AUTHOR_DATE="2005-05-26 23:41" \
 	 GIT_COMMITTER_DATE="2005-05-26 23:41" git-commit -F M -a &&
-	 h_OTHER=$(git-rev-parse --verify HEAD)
+	 h_OTHER=$(git-rev-parse --verify HEAD) &&
+	 echo FIXED >F &&
+	 EDITOR=true \
+	 GIT_AUTHOR_DATE="2005-05-26 23:44" \
+	 GIT_COMMITTER_DATE="2005-05-26 23:44" git-commit --amend &&
+	 h_FIXED=$(git-rev-parse --verify HEAD) &&
+	 echo TEST+FIXED >F &&
+	 echo Merged initial commit and a later commit. >M &&
+	 echo $h_TEST >.git/MERGE_HEAD &&
+	 GIT_AUTHOR_DATE="2005-05-26 23:45" \
+	 GIT_COMMITTER_DATE="2005-05-26 23:45" git-commit -F M &&
+	 h_MERGED=$(git-rev-parse --verify HEAD)
 	 rm -f M'
 
 cat >expect <<EOF
-$Z $h_TEST $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	commit: add
+$Z $h_TEST $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	commit (initial): add
 $h_TEST $h_OTHER $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000	commit: The other day this did not work.
+$h_OTHER $h_FIXED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151040 +0000	commit (amend): The other day this did not work.
+$h_FIXED $h_MERGED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151100 +0000	commit (merge): Merged initial commit and a later commit.
 EOF
 test_expect_success \
 	'git-commit logged updates' \
 	'diff expect .git/logs/$m'
-unset h_TEST h_OTHER
+unset h_TEST h_OTHER h_FIXED h_MERGED
 
 test_expect_success \
 	'git-cat-file blob master:F (expect OTHER)' \