Fix typos / spelling in comments

diff --git a/git-am.sh b/git-am.sh
index b598b4332a6224bb5c8363afdcff7cb9a3f3dbcd..6d1848b6cce89e4953a3ca6e1b2e6e1611277a4a 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -23,6 +23,8 @@ resolvemsg=     override error message when patch failure occurs
 r,resolved      to be used after a patch failure
 skip            skip the current patch
 abort           restore the original branch and abort the patching operation.
+committer-date-is-author-date    lie about committer date
+ignore-date     use current timestamp for author date
 rebasing*       (internal use for git-rebase)"
 
 . git-sh-setup
@@ -34,6 +36,13 @@ cd_to_toplevel
 git var GIT_COMMITTER_IDENT >/dev/null ||
        die "You need to set your committer info first"
 
+if git rev-parse --verify -q HEAD >/dev/null
+then
+       HAS_HEAD=yes
+else
+       HAS_HEAD=
+fi
+
 sq () {
        for sqarg
        do
@@ -133,6 +142,8 @@ dotest="$GIT_DIR/rebase-apply"
 sign= utf8=t keep= skip= interactive= resolved= rebasing= abort=
 resolvemsg= resume=
 git_apply_opt=
+committer_date_is_author_date=
+ignore_date=
 
 while test $# != 0
 do
@@ -170,6 +181,10 @@ do
                git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
        --reject)
                git_apply_opt="$git_apply_opt $1" ;;
+       --committer-date-is-author-date)
+               committer_date_is_author_date=t ;;
+       --ignore-date)
+               ignore_date=t ;;
        --)
                shift; break ;;
        *)
@@ -213,6 +228,9 @@ then
        resume=yes
 
        case "$skip,$abort" in
+       t,t)
+               die "Please make up your mind. --skip or --abort?"
+               ;;
        t,)
                git rerere clear
                git read-tree --reset -u HEAD HEAD
@@ -221,12 +239,19 @@ then
                git update-ref ORIG_HEAD $orig_head
                ;;
        ,t)
+               if test -f "$dotest/rebasing"
+               then
+                       exec git rebase --abort
+               fi
                git rerere clear
-               git read-tree --reset -u HEAD ORIG_HEAD
-               git reset ORIG_HEAD
+               test -f "$dotest/dirtyindex" || {
+                       git read-tree --reset -u HEAD ORIG_HEAD
+                       git reset ORIG_HEAD
+               }
                rm -fr "$dotest"
                exit ;;
        esac
+       rm -f "$dotest/dirtyindex"
 else
        # Make sure we are not given --skip, --resolved, nor --abort
        test "$skip$resolved$abort" = "" ||
@@ -272,14 +297,28 @@ else
                : >"$dotest/rebasing"
        else
                : >"$dotest/applying"
-               git update-ref ORIG_HEAD HEAD
+               if test -n "$HAS_HEAD"
+               then
+                       git update-ref ORIG_HEAD HEAD
+               else
+                       git update-ref -d ORIG_HEAD >/dev/null 2>&1
+               fi
        fi
 fi
 
 case "$resolved" in
 '')
-       files=$(git diff-index --cached --name-only HEAD --) || exit
-       test "$files" && die "Dirty index: cannot apply patches (dirty: $files)"
+       case "$HAS_HEAD" in
+       '')
+               files=$(git ls-files) ;;
+       ?*)
+               files=$(git diff-index --cached --name-only HEAD --) ;;
+       esac || exit
+       if test "$files"
+       then
+               test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
+               die "Dirty index: cannot apply patches (dirty: $files)"
+       fi
 esac
 
 if test "$(cat "$dotest/utf8")" = t
@@ -519,8 +558,21 @@ do
        fi
 
        tree=$(git write-tree) &&
-       parent=$(git rev-parse --verify HEAD) &&
-       commit=$(git commit-tree $tree -p $parent <"$dotest/final-commit") &&
+       commit=$(
+               if test -n "$ignore_date"
+               then
+                       GIT_AUTHOR_DATE=
+               fi
+               parent=$(git rev-parse --verify -q HEAD) ||
+               echo >&2 "applying to an empty history"
+
+               if test -n "$committer_date_is_author_date"
+               then
+                       GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
+                       export GIT_COMMITTER_DATE
+               fi &&
+               git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
+       ) &&
        git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
        stop_here $this