am: don't call mailinfo if $rebasing

Since 5e835ca (rebase: do not munge commit log message, 2008-04-16),
'git am --rebasing' no longer gets the commit log message from the
patch, but reads it from the commit identified by the "From " header
line. From 43c2325 (am: use get_author_ident_from_commit instead of
mailinfo when rebasing, 2010-06-16), it also gets the author name,
email and date from the commit. Now that the final part of the patch
-- the patch body itself -- is also read from the commit, there is no
longer a need to call 'git mailinfo' to extract any of these parts
while --rebasing.

Sugested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-am.sh b/git-am.sh
index ec8fde102cabc50bff43c8862cf001616636d4ad..b6a530018e18527efc8ed788e815b380d0206787 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -260,7 +260,7 @@ check_patch_format () {
 split_patches () {
        case "$patch_format" in
        mbox)
-               if test -n "$rebasing" || test t = "$keepcr"
+               if test t = "$keepcr"
                then
                    keep_cr=--keep-cr
                else
@@ -413,7 +413,7 @@ do
        --abort)
                abort=t ;;
        --rebasing)
-               rebasing=t threeway=t keep=t scissors=f no_inbody_headers=t ;;
+               rebasing=t threeway=t ;;
        -d|--dotest)
                die "$(gettext "-d option is no longer supported.  Do not use.")"
                ;;
@@ -658,33 +658,34 @@ do
        # by the user, or the user can tell us to do so by --resolved flag.
        case "$resume" in
        '')
-               git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
-                       <"$dotest/$msgnum" >"$dotest/info" ||
-                       stop_here $this
-
-               # skip pine's internal folder data
-               sane_grep '^Author: Mail System Internal Data$' \
-                       <"$dotest"/info >/dev/null &&
-                       go_next && continue
-
-               test -s "$dotest/patch" || {
-                       eval_gettextln "Patch is empty.  Was it split wrong?
-If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
-To restore the original branch and stop patching run \"\$cmdline --abort\"."
-                       stop_here $this
-               }
-               rm -f "$dotest/original-commit" "$dotest/author-script"
-               if test -f "$dotest/rebasing" &&
+               if test -f "$dotest/rebasing"
+               then
                        commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
                                -e q "$dotest/$msgnum") &&
-                       test "$(git cat-file -t "$commit")" = commit
-               then
+                       test "$(git cat-file -t "$commit")" = commit ||
+                               stop_here $this
                        git cat-file commit "$commit" |
                        sed -e '1,/^$/d' >"$dotest/msg-clean"
-                       echo "$commit" > "$dotest/original-commit"
-                       get_author_ident_from_commit "$commit" > "$dotest/author-script"
+                       echo "$commit" >"$dotest/original-commit"
+                       get_author_ident_from_commit "$commit" >"$dotest/author-script"
                        git diff-tree --root --binary "$commit" >"$dotest/patch"
                else
+                       git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
+                               <"$dotest/$msgnum" >"$dotest/info" ||
+                               stop_here $this
+
+                       # skip pine's internal folder data
+                       sane_grep '^Author: Mail System Internal Data$' \
+                               <"$dotest"/info >/dev/null &&
+                               go_next && continue
+
+                       test -s "$dotest/patch" || {
+                               eval_gettextln "Patch is empty.  Was it split wrong?
+If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
+To restore the original branch and stop patching run \"\$cmdline --abort\"."
+                               stop_here $this
+                       }
+                       rm -f "$dotest/original-commit" "$dotest/author-script"
                        {
                                sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
                                echo