This is a companion patch to the previous format-patch fix.
With "-k", format-patch can be told not to remove the [PATCH] in
the original commit, nor to add the [PATCH] on its own.

However, applymbox toolchain has a code to remove [PATCH] (among
other things) from the Subject: line, which is the right thing
to do when dealing with real e-mailed patches, but it interferes
with the "format-patch to applymbox" cherry-picking.  The -k
flag disables this.

Signed-off-by: Junio C Hamano <[EMAIL PROTECTED]>
---

 tools/git-applymbox  |   11 ++++++++---
 tools/git-applypatch |    5 ++++-
 tools/mailinfo.c     |   15 +++++++++++++++
 3 files changed, 27 insertions(+), 4 deletions(-)

6bff6a60680ef402f614abae8189c2cb198cfa49
diff --git a/tools/git-applymbox b/tools/git-applymbox
--- a/tools/git-applymbox
+++ b/tools/git-applymbox
@@ -9,7 +9,7 @@
 ## You give it a mbox-format collection of emails, and it will try to
 ## apply them to the kernel using "applypatch"
 ##
-## applymbox [ -q ] (-c .dotest/msg-number | mail_archive) [Signoff_file]"
+## applymbox [ -k ] [ -q ] (-c .dotest/msg-number | mail_archive) 
[Signoff_file]"
 ##
 ## The patch application may fail in the middle.  In which case:
 ## (1) look at .dotest/patch and fix it up to apply
@@ -18,10 +18,11 @@
 ## use a Signoff_file, because applypatch wants to append the sign-off
 ## message to msg-clean every time it is run.
 
-query_apply= continue= resume=t
+keep_subject= query_apply= continue= resume=t
 while case "$#" in 0) break ;; esac
 do
        case "$1" in
+       -k)     keep_subject=-k ;;
        -q)     query_apply=t ;;
        -c)     continue="$2"; resume=f; shift ;;
        -*)     usage ;;
@@ -41,6 +42,9 @@ esac
 case "$query_apply" in
 t)     touch .dotest/.query_apply
 esac
+case "$keep_subject" in
+-k)    : >.dotest/.keep_subject
+esac
 
 signoff="$1"
 set x .dotest/0*
@@ -52,7 +56,8 @@ do
     f,$i)      resume=t;;
     f,*)       continue;;
     *)
-           git-mailinfo .dotest/msg .dotest/patch <$i >.dotest/info || exit 1
+           git-mailinfo $keep_subject \
+               .dotest/msg .dotest/patch <$i >.dotest/info || exit 1
            git-stripspace < .dotest/msg > .dotest/msg-clean
            ;;
     esac
diff --git a/tools/git-applypatch b/tools/git-applypatch
--- a/tools/git-applypatch
+++ b/tools/git-applypatch
@@ -16,6 +16,7 @@ final=.dotest/final-commit
 ## If this file exists, we ask before applying
 ##
 query_apply=.dotest/.query_apply
+keep_subject=.dotest/.keep_subject
 MSGFILE=$1
 PATCHFILE=$2
 INFO=$3
@@ -30,8 +31,10 @@ export SUBJECT="$(sed -n '/^Subject/ s/S
 if [ -n "$signoff" -a -f "$signoff" ]; then
        cat $signoff >> $MSGFILE
 fi
+patch_header=
+test -f "$keep_subject" || patch_header='[PATCH] '
 
-(echo "[PATCH] $SUBJECT" ; if [ -s $MSGFILE ]; then echo ; cat $MSGFILE; fi ) 
> $final
+(echo "$patch_header$SUBJECT" ; if [ -s $MSGFILE ]; then echo ; cat $MSGFILE; 
fi ) > $final
 
 f=0
 [ -f $query_apply ] || f=1
diff --git a/tools/mailinfo.c b/tools/mailinfo.c
--- a/tools/mailinfo.c
+++ b/tools/mailinfo.c
@@ -9,6 +9,7 @@
 
 static FILE *cmitmsg, *patchfile;
 
+static int keep_subject = 0;
 static char line[1000];
 static char date[1000];
 static char name[1000];
@@ -101,6 +102,8 @@ static void check_line(char *line, int l
 
 static char * cleanup_subject(char *subject)
 {
+       if (keep_subject)
+               return subject;
        for (;;) {
                char *p;
                int len, remove;
@@ -242,8 +245,20 @@ static void usage(void)
        exit(1);
 }
 
+static const char mailinfo_usage[] =
+"git-mailinfo [-k] msg patch <mail >info";
 int main(int argc, char ** argv)
 {
+       while (1 < argc && argv[1][0] == '-') {
+               if (!strcmp(argv[1], "-k"))
+                       keep_subject = 1;
+               else {
+                       fprintf(stderr, "usage: %s\n", mailinfo_usage);
+                       exit(1);
+               }
+               argc--; argv++;
+       }
+
        if (argc != 3)
                usage();
        cmitmsg = fopen(argv[1], "w");

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