Documentation: detached HEAD

diff --git a/git-revert.sh b/git-revert.sh
index 224e6540ca073da804332799660a8cdeacdfdaf7..bb8f1ca24aadf47734049b740be8f539e0e9325d 100755 (executable)
--- a/git-revert.sh
+++ b/git-revert.sh
@@ -81,6 +81,8 @@ prev=$(git-rev-parse --verify "$commit^1" 2>/dev/null) ||
 git-rev-parse --verify "$commit^2" >/dev/null 2>&1 &&
        die "Cannot run $me a multi-parent commit."
 
+encoding=$(git repo-config i18n.commitencoding || echo UTF-8)
+
 # "commit" is an existing commit.  We would want to apply
 # the difference it introduces since its first parent "prev"
 # on top of the current HEAD if we are cherry-pick.  Or the
@@ -88,10 +90,11 @@ git-rev-parse --verify "$commit^2" >/dev/null 2>&1 &&
 
 case "$me" in
 revert)
-       git-rev-list --pretty=oneline --max-count=1 $commit |
+       git show -s --pretty=oneline --encoding="$encoding" $commit |
        sed -e '
                s/^[^ ]* /Revert "/
-               s/$/"/'
+               s/$/"/
+       '
        echo
        echo "This reverts commit $commit."
        test "$rev" = "$commit" ||
@@ -120,14 +123,17 @@ cherry-pick)
 
                q
        }'
-       set_author_env=`git-cat-file commit "$commit" |
+
+       logmsg=`git show -s --pretty=raw --encoding="$encoding" "$commit"`
+       set_author_env=`echo "$logmsg" |
        LANG=C LC_ALL=C sed -ne "$pick_author_script"`
        eval "$set_author_env"
        export GIT_AUTHOR_NAME
        export GIT_AUTHOR_EMAIL
        export GIT_AUTHOR_DATE
 
-       git-cat-file commit $commit | sed -e '1,/^$/d'
+       echo "$logmsg" |
+       sed -e '1,/^$/d' -e 's/^    //'
        case "$replay" in
        '')
                echo "(cherry picked from commit $commit)"
@@ -140,37 +146,38 @@ cherry-pick)
 
 esac >.msg
 
+eval GITHEAD_$head=HEAD
+eval GITHEAD_$next='`git show -s \
+       --pretty=oneline --encoding="$encoding" "$commit" |
+       sed -e "s/^[^ ]* //"`'
+export GITHEAD_$head GITHEAD_$next
+
 # This three way merge is an interesting one.  We are at
 # $head, and would want to apply the change between $commit
 # and $prev on top of us (when reverting), or the change between
 # $prev and $commit on top of us (when cherry-picking or replaying).
 
-echo >&2 "First trying simple merge strategy to $me."
-git-read-tree -m -u --aggressive $base $head $next &&
+git-merge-recursive $base -- $head $next &&
 result=$(git-write-tree 2>/dev/null) || {
-    echo >&2 "Simple $me fails; trying Automatic $me."
-    git-merge-index -o git-merge-one-file -a || {
-           mv -f .msg "$GIT_DIR/MERGE_MSG"
-           {
-               echo '
+       mv -f .msg "$GIT_DIR/MERGE_MSG"
+       {
+           echo '
 Conflicts:
 '
                git ls-files --unmerged |
                sed -e 's/^[^   ]*      /       /' |
                uniq
-           } >>"$GIT_DIR/MERGE_MSG"
-           echo >&2 "Automatic $me failed.  After resolving the conflicts,"
-           echo >&2 "mark the corrected paths with 'git-add <paths>'"
-           echo >&2 "and commit the result."
-           case "$me" in
-           cherry-pick)
+       } >>"$GIT_DIR/MERGE_MSG"
+       echo >&2 "Automatic $me failed.  After resolving the conflicts,"
+       echo >&2 "mark the corrected paths with 'git-add <paths>'"
+       echo >&2 "and commit the result."
+       case "$me" in
+       cherry-pick)
                echo >&2 "You may choose to use the following when making"
                echo >&2 "the commit:"
                echo >&2 "$set_author_env"
-           esac
-           exit 1
-    }
-    result=$(git-write-tree) || exit
+       esac
+       exit 1
 }
 echo >&2 "Finished one $me."