Tentative fix to git-commit-script

The recent change to give the multiple commit message source was not
carrying over the authorship information from -C/-c commits correctly.
The export of the environment variable happens only in the subprocess,
not the main process that eventually runs git-commit-tree.

The right fix might be to teach git-commit-script to grok the From:
and Date: lines at the beginning of the commit message just like
git-applymbox knows how, but this has to do until that enhancement
happens.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-commit-script b/git-commit-script
index 5e6b877..790f07c 100755 (executable)
--- a/git-commit-script
+++ b/git-commit-script
@@ -167,6 +167,7 @@ if [ ! -r "$GIT_DIR/HEAD" ]; then
        no_edit=
 else
        if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
+               {
                echo "#"
                echo "# It looks like your may be committing a MERGE."
                echo "# If this is not correct, please remove the file"
@@ -177,10 +178,13 @@ else
                   no_edit= 
                esac
                echo "#"
+               } |
+               git-stripspace >.editmsg
                PARENTS="-p HEAD -p MERGE_HEAD"
        elif test "$log_message" != ''
        then
-               echo "$log_message"
+               echo "$log_message" |
+               git-stripspace >.editmsg
        elif test "$logfile" != ""
        then
                if test "$logfile" = -
@@ -190,7 +194,8 @@ else
                        cat
                else
                        cat <"$logfile"
-               fi
+               fi |
+               git-stripspace >.editmsg
        elif test "$use_commit" != ""
        then
                pick_author_script='
@@ -220,9 +225,10 @@ else
                export GIT_AUTHOR_EMAIL
                export GIT_AUTHOR_DATE
                git-cat-file commit "$use_commit" |
-               sed -e '1,/^$/d'
-       fi |
-       git-stripspace >.editmsg
+               sed -e '1,/^$/d' |
+               git-stripspace >.editmsg
+       fi
+
        case "$signoff" in
        t)
                git-var GIT_COMMITTER_IDENT | sed -e '