am: learn passing -b to mailinfo

git-am could pass -k to mailinfo, but not -b.  Introduce an option
that does so.  We change the meaning of the 'keep' state file, but are
careful not to cause a problem unless you downgrade in the middle of
an 'am' run.

This uncovers a bug in mailinfo -b, hence the failing test.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-am.txt b/Documentation/git-am.txt
index 6b1b5af64e2daec1ecc8ee832f58f5186d740a79..123f7c9e4ab2c16e9cc0024e29ed7e1b3fcb96ea 100644 (file)
--- a/Documentation/git-am.txt
+++ b/Documentation/git-am.txt
@@ -39,6 +39,9 @@ OPTIONS
 --keep::
        Pass `-k` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]).
 
+--keep-non-patch::
+       Pass `-b` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]).
+
 --keep-cr::
 --no-keep-cr::
        With `--keep-cr`, call 'git mailsplit' (see linkgit:git-mailsplit[1])

diff --git a/git-am.sh b/git-am.sh
index 6cdd5910db50c96df3d149fba172750cb10c09cb..8b755d93ba53e133e1bb4114b0736b5dd6f93793 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -15,6 +15,7 @@ q,quiet         be quiet
 s,signoff       add a Signed-off-by line to the commit message
 u,utf8          recode into utf8 (default)
 k,keep          pass -k flag to git-mailinfo
+keep-non-patch  pass -b flag to git-mailinfo
 keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
 no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
 c,scissors      strip everything before a scissors line
@@ -345,6 +346,8 @@ do
                utf8= ;;
        -k|--keep)
                keep=t ;;
+       --keep-non-patch)
+               keep=b ;;
        -c|--scissors)
                scissors=t ;;
        --no-scissors)
@@ -522,16 +525,25 @@ case "$resolved" in
        fi
 esac
 
+# Now, decide what command line options we will give to the git
+# commands we invoke, based on the result of parsing command line
+# options and previous invocation state stored in $dotest/ files.
+
 if test "$(cat "$dotest/utf8")" = t
 then
        utf8=-u
 else
        utf8=-n
 fi
-if test "$(cat "$dotest/keep")" = t
-then
-       keep=-k
-fi
+keep=$(cat "$dotest/keep")
+case "$keep" in
+t)
+       keep=-k ;;
+b)
+       keep=-b ;;
+*)
+       keep= ;;
+esac
 case "$(cat "$dotest/keepcr")" in
 t)
        keepcr=--keep-cr ;;

diff --git a/t/t4150-am.sh b/t/t4150-am.sh
index 850fc96d1f07b19310cb4672ab44374b37b82d67..efcff3c51db4deed371b85acdf5385cc74921809 100755 (executable)
--- a/t/t4150-am.sh
+++ b/t/t4150-am.sh
@@ -219,7 +219,7 @@ test_expect_success 'am stays in branch' '
 
 test_expect_success 'am --signoff does not add Signed-off-by: line if already there' '
        git format-patch --stdout HEAD^ >patch3 &&
-       sed -e "/^Subject/ s,\[PATCH,Re: Re: Re: & 1/5 v2," patch3 >patch4 &&
+       sed -e "/^Subject/ s,\[PATCH,Re: Re: Re: & 1/5 v2] [foo," patch3 >patch4 &&
        rm -fr .git/rebase-apply &&
        git reset --hard &&
        git checkout HEAD^ &&
@@ -241,7 +241,17 @@ test_expect_success 'am --keep really keeps the subject' '
        git am --keep patch4 &&
        ! test -d .git/rebase-apply &&
        git cat-file commit HEAD >actual &&
-       grep "Re: Re: Re: \[PATCH 1/5 v2\] third" actual
+       grep "Re: Re: Re: \[PATCH 1/5 v2\] \[foo\] third" actual
+'
+
+test_expect_failure 'am --keep-non-patch really keeps the non-patch part' '
+       rm -fr .git/rebase-apply &&
+       git reset --hard &&
+       git checkout HEAD^ &&
+       git am --keep-non-patch patch4 &&
+       ! test -d .git/rebase-apply &&
+       git cat-file commit HEAD >actual &&
+       grep "^\[foo\] third" actual
 '
 
 test_expect_success 'am -3 falls back to 3-way merge' '