lstat_cache(): print a warning if doing ping-pong between cache types

diff --git a/git-am.sh b/git-am.sh
index e726f171414cfe27e14b068a2eab1de5303209bc..8bcb206022ae5d4ae82d2a37d8f79454c043ad78 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -8,9 +8,8 @@ OPTIONS_SPEC="\
 git am [options] [<mbox>|<Maildir>...]
 git am [options] (--resolved | --skip | --abort)
 --
-d,dotest=       (removed -- do not use)
 i,interactive   run interactively
-b,binary        (historical option -- no-op)
+b,binary*       (historical option -- no-op)
 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)
@@ -25,7 +24,8 @@ 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
-rebasing        (internal use for git-rebase)"
+ignore-date     use current timestamp for author date
+rebasing*       (internal use for git-rebase)"
 
 . git-sh-setup
 prefix=$(git rev-parse --show-prefix)
@@ -136,6 +136,7 @@ sign= utf8=t keep= skip= interactive= resolved= rebasing= abort=
 resolvemsg= resume=
 git_apply_opt=
 committer_date_is_author_date=
+ignore_date=
 
 while test $# != 0
 do
@@ -175,6 +176,8 @@ do
                git_apply_opt="$git_apply_opt $1" ;;
        --committer-date-is-author-date)
                committer_date_is_author_date=t ;;
+       --ignore-date)
+               ignore_date=t ;;
        --)
                shift; break ;;
        *)
@@ -208,7 +211,7 @@ then
                # unreliable -- stdin could be /dev/null for example
                # and the caller did not intend to feed us a patch but
                # wanted to continue unattended.
-               tty -s
+               test -t 0
                ;;
        *)
                false
@@ -284,10 +287,7 @@ fi
 case "$resolved" in
 '')
        files=$(git diff-index --cached --name-only HEAD --) || exit
-       if [ "$files" ]; then
-          echo "Dirty index: cannot apply patches (dirty: $files)" >&2
-          exit 1
-       fi
+       test "$files" && die "Dirty index: cannot apply patches (dirty: $files)"
 esac
 
 if test "$(cat "$dotest/utf8")" = t
@@ -529,6 +529,10 @@ do
        tree=$(git write-tree) &&
        parent=$(git rev-parse --verify HEAD) &&
        commit=$(
+               if test -n "$ignore_date"
+               then
+                       GIT_AUTHOR_DATE=
+               fi
                if test -n "$committer_date_is_author_date"
                then
                        GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"