fix update-hook-example to work with packed tag references

diff --git a/git-am.sh b/git-am.sh
index 851f85eb55f2ea078991c083711d172db9db8d1b..2c517ede590c5c3274b03d1c980f9a847cc7d643 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -2,15 +2,16 @@
 #
 # Copyright (c) 2005, 2006 Junio C Hamano
 
+SUBDIRECTORY_OK=Yes
 OPTIONS_KEEPDASHDASH=
 OPTIONS_SPEC="\
 git-am [options] <mbox>|<Maildir>...
 git-am [options] --resolved
 git-am [options] --skip
 --
-d,dotest=       use <dir> and not .dotest
+d,dotest=       (removed -- do not use)
 i,interactive   run interactively
-b,binary        pass --allo-binary-replacement to git-apply
+b,binary        pass --allow-binary-replacement to git-apply
 3,3way          allow fall back on 3way merging if needed
 s,signoff       add a Signed-off-by line to the commit message
 u,utf8          recode into utf8 (default)
@@ -20,11 +21,14 @@ C=              pass it through git-apply
 p=              pass it through git-apply
 resolvemsg=     override error message when patch failure occurs
 r,resolved      to be used after a patch failure
-skip            skip the current patch"
+skip            skip the current patch
+rebasing        (internal use for git-rebase)"
 
 . git-sh-setup
+prefix=$(git rev-parse --show-prefix)
 set_reflog_action am
 require_work_tree
+cd_to_toplevel
 
 git var GIT_COMMITTER_IDENT >/dev/null || exit
 
@@ -47,10 +51,6 @@ stop_here_user_resolve () {
     then
         cmdline="$cmdline -3"
     fi
-    if test '.dotest' != "$dotest"
-    then
-        cmdline="$cmdline -d=$dotest"
-    fi
     echo "When you have resolved this problem run \"$cmdline --resolved\"."
     echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
 
@@ -118,7 +118,8 @@ It does not apply to blobs recorded in its index."
 }
 
 prec=4
-dotest=.dotest sign= utf8=t keep= skip= interactive= resolved= binary=
+dotest=".dotest"
+sign= utf8=t keep= skip= interactive= resolved= binary= rebasing=
 resolvemsg= resume=
 git_apply_opt=
 
@@ -143,8 +144,11 @@ do
                resolved=t ;;
        --skip)
                skip=t ;;
+       --rebasing)
+               rebasing=t threeway=t keep=t binary=t ;;
        -d|--dotest)
-               shift; dotest=$1;;
+               die "-d option is no longer supported.  Do not use."
+               ;;
        --resolvemsg)
                shift; resolvemsg=$1 ;;
        --whitespace)
@@ -180,7 +184,7 @@ then
        0,)
                # No file input but without resume parameters; catch
                # user error to feed us a patch from standard input
-               # when there is already .dotest.  This is somewhat
+               # when there is already $dotest.  This is somewhat
                # unreliable -- stdin could be /dev/null for example
                # and the caller did not intend to feed us a patch but
                # wanted to continue unattended.
@@ -200,6 +204,24 @@ else
        # Start afresh.
        mkdir -p "$dotest" || exit
 
+       if test -n "$prefix" && test $# != 0
+       then
+               first=t
+               for arg
+               do
+                       test -n "$first" && {
+                               set x
+                               first=
+                       }
+                       case "$arg" in
+                       /*)
+                               set "$@" "$arg" ;;
+                       *)
+                               set "$@" "$prefix$arg" ;;
+                       esac
+               done
+               shift
+       fi
        git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
                rm -fr "$dotest"
                exit 1
@@ -214,6 +236,12 @@ else
        echo "$utf8" >"$dotest/utf8"
        echo "$keep" >"$dotest/keep"
        echo 1 >"$dotest/next"
+       if test -n "$rebasing"
+       then
+               : >"$dotest/rebasing"
+       else
+               : >"$dotest/applying"
+       fi
 fi
 
 case "$resolved" in
@@ -299,11 +327,20 @@ do
                        echo "Patch is empty.  Was it split wrong?"
                        stop_here $this
                }
-               SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
-               case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
-
-               (printf '%s\n\n' "$SUBJECT"; cat "$dotest/msg") |
-                       git stripspace > "$dotest/msg-clean"
+               if test -f "$dotest/rebasing" &&
+                       commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
+                               -e q "$dotest/$msgnum") &&
+                       test "$(git cat-file -t "$commit")" = commit
+               then
+                       git cat-file commit "$commit" |
+                       sed -e '1,/^$/d' >"$dotest/msg-clean"
+               else
+                       SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
+                       case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
+
+                       (printf '%s\n\n' "$SUBJECT"; cat "$dotest/msg") |
+                               git stripspace > "$dotest/msg-clean"
+               fi
                ;;
        esac
 
@@ -326,7 +363,7 @@ do
                LAST_SIGNED_OFF_BY=`
                    sed -ne '/^Signed-off-by: /p' \
                    "$dotest/msg-clean" |
-                   tail -n 1
+                   sed -ne '$p'
                `
                ADD_SIGNOFF=`
                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
@@ -384,7 +421,7 @@ do
        else
            action=yes
        fi
-       FIRSTLINE=$(head -1 "$dotest/final-commit")
+       FIRSTLINE=$(sed 1q "$dotest/final-commit")
 
        if test $action = skip
        then