t6021: add a new test for git-merge-resolve
[gitweb.git] / git-am.sh
index 5792631d848b0658a6a1a81093ee4eddabf1eea6..2c517ede590c5c3274b03d1c980f9a847cc7d643 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -2,14 +2,33 @@
 #
 # Copyright (c) 2005, 2006 Junio C Hamano
 
-USAGE='[--signoff] [--dotest=<dir>] [--keep] [--utf8 | --no-utf8]
-  [--3way] [--interactive] [--binary]
-  [--whitespace=<option>] [-C<n>] [-p<n>]
-  <mbox>|<Maildir>...
-  or, when resuming [--skip | --resolved]'
+SUBDIRECTORY_OK=Yes
+OPTIONS_KEEPDASHDASH=
+OPTIONS_SPEC="\
+git-am [options] <mbox>|<Maildir>...
+git-am [options] --resolved
+git-am [options] --skip
+--
+d,dotest=       (removed -- do not use)
+i,interactive   run interactively
+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)
+k,keep          pass -k flag to git-mailinfo
+whitespace=     pass it through git-apply
+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
+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
 
@@ -32,10 +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\"."
 
@@ -92,7 +107,7 @@ It does not apply to blobs recorded in its index."
     # patch did not touch, so recursive ends up canceling them,
     # saying that we reverted all those changes.
 
-    eval GITHEAD_$his_tree='"$SUBJECT"'
+    eval GITHEAD_$his_tree='"$FIRSTLINE"'
     export GITHEAD_$his_tree
     git-merge-recursive $orig_tree -- HEAD $his_tree || {
            git rerere
@@ -103,56 +118,49 @@ 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=
 
 while test $# != 0
 do
        case "$1" in
-       -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
-       dotest=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
-       -d|--d|--do|--dot|--dote|--dotes|--dotest)
-       case "$#" in 1) usage ;; esac; shift
-       dotest="$1"; shift;;
-
-       -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
-       --interacti|--interactiv|--interactive)
-       interactive=t; shift ;;
-
-       -b|--b|--bi|--bin|--bina|--binar|--binary)
-       binary=t; shift ;;
-
-       -3|--3|--3w|--3wa|--3way)
-       threeway=t; shift ;;
-       -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
-       sign=t; shift ;;
-       -u|--u|--ut|--utf|--utf8)
-       utf8=t; shift ;; # this is now default
-       --no-u|--no-ut|--no-utf|--no-utf8)
-       utf8=; shift ;;
-       -k|--k|--ke|--kee|--keep)
-       keep=t; shift ;;
-
-       -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
-       resolved=t; shift ;;
-
-       --sk|--ski|--skip)
-       skip=t; shift ;;
-
-       --whitespace=*|-C*|-p*)
-       git_apply_opt="$git_apply_opt $1"; shift ;;
-
-       --resolvemsg=*)
-       resolvemsg=${1#--resolvemsg=}; shift ;;
-
+       -i|--interactive)
+               interactive=t ;;
+       -b|--binary)
+               binary=t ;;
+       -3|--3way)
+               threeway=t ;;
+       -s|--signoff)
+               sign=t ;;
+       -u|--utf8)
+               utf8=t ;; # this is now default
+       --no-utf8)
+               utf8= ;;
+       -k|--keep)
+               keep=t ;;
+       -r|--resolved)
+               resolved=t ;;
+       --skip)
+               skip=t ;;
+       --rebasing)
+               rebasing=t threeway=t keep=t binary=t ;;
+       -d|--dotest)
+               die "-d option is no longer supported.  Do not use."
+               ;;
+       --resolvemsg)
+               shift; resolvemsg=$1 ;;
+       --whitespace)
+               git_apply_opt="$git_apply_opt $1=$2"; shift ;;
+       -C|-p)
+               git_apply_opt="$git_apply_opt $1$2"; shift ;;
        --)
-       shift; break ;;
-       -*)
-       usage ;;
+               shift; break ;;
        *)
-       break ;;
+               usage ;;
        esac
+       shift
 done
 
 # If the dotest directory exists, but we have finished applying all the
@@ -176,7 +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 $dotest.  This is somewhat
                # unreliable -- stdin could be /dev/null for example
                # and the caller did not intend to feed us a patch but
                # wanted to continue unattended.
@@ -196,6 +204,24 @@ else
        # Start afresh.
        mkdir -p "$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 "$dotest"
                exit 1
@@ -210,6 +236,12 @@ else
        echo "$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
@@ -295,7 +327,20 @@ do
                        echo "Patch is empty.  Was it split wrong?"
                        stop_here $this
                }
-               git stripspace < "$dotest/msg" > "$dotest/msg-clean"
+               if test -f "$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
 
@@ -311,9 +356,6 @@ do
 
        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 
-       SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
-       case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
-
        case "$resume" in
        '')
            if test '' != "$SIGNOFF"
@@ -321,7 +363,7 @@ do
                LAST_SIGNED_OFF_BY=`
                    sed -ne '/^Signed-off-by: /p' \
                    "$dotest/msg-clean" |
-                   tail -n 1
+                   sed -ne '$p'
                `
                ADD_SIGNOFF=`
                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
@@ -332,10 +374,8 @@ do
                ADD_SIGNOFF=
            fi
            {
-               printf '%s\n' "$SUBJECT"
                if test -s "$dotest/msg-clean"
                then
-                       echo
                        cat "$dotest/msg-clean"
                fi
                if test '' != "$ADD_SIGNOFF"
@@ -381,6 +421,7 @@ do
        else
            action=yes
        fi
+       FIRSTLINE=$(sed 1q "$dotest/final-commit")
 
        if test $action = skip
        then
@@ -394,9 +435,7 @@ do
                stop_here $this
        fi
 
-       echo
-       printf 'Applying %s\n' "$SUBJECT"
-       echo
+       printf 'Applying %s\n' "$FIRSTLINE"
 
        case "$resolved" in
        '')
@@ -452,11 +491,9 @@ do
        fi
 
        tree=$(git write-tree) &&
-       echo Wrote tree $tree &&
        parent=$(git rev-parse --verify HEAD) &&
        commit=$(git commit-tree $tree -p $parent <"$dotest/final-commit") &&
-       echo Committed: $commit &&
-       git update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
+       git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
        stop_here $this
 
        if test -x "$GIT_DIR"/hooks/post-applypatch
@@ -467,4 +504,6 @@ do
        go_next
 done
 
+git gc --auto
+
 rm -fr "$dotest"