Permalink
Browse files

am: ignore leading whitespace before patch

Some web-based email clients prepend whitespace to raw message
transcripts to workaround content-sniffing in some browsers.  Adjust
the patch format detection logic to ignore leading whitespace.

So now you can apply patches from GMail with "git am" in three steps:

 1. choose "show original"
 2. tell the browser to "save as" (for example by pressing Ctrl+S)
 3. run "git am" on the saved file

This fixes a regression introduced by v1.6.4-rc0~15^2~2 (git-am
foreign patch support: autodetect some patch formats, 2009-05-27).
GMail support was first introduced to "git am" by v1.5.4-rc0~274^2
(Make mailsplit and mailinfo strip whitespace from the start of the
input, 2007-11-01).

Signed-off-by: David Barr <davidbarr@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
  • Loading branch information...
barrbrain authored and gitster committed Aug 8, 2011
1 parent e7a85be commit 0e8341f29d6541f661cc52f27f96877c0fd469c2
Showing with 26 additions and 3 deletions.
  1. +8 −3 git-am.sh
  2. +18 −0 t/t4150-am.sh
View
@@ -196,10 +196,15 @@ check_patch_format () {
return 0
fi
- # otherwise, check the first few lines of the first patch to try
- # to detect its format
+ # otherwise, check the first few non-blank lines of the first
+ # patch to try to detect its format
{
- read l1
+ # Start from first line containing non-whitespace
+ l1=
+ while test -z "$l1"
+ do
+ read l1
+ done
read l2
read l3
case "$l1" in
View
@@ -96,6 +96,13 @@ test_expect_success setup '
echo "X-Fake-Field: Line Three" &&
git format-patch --stdout first | sed -e "1d"
} | append_cr >patch1-crlf.eml &&
+ {
+ printf "%255s\\n" ""
+ echo "X-Fake-Field: Line One" &&
+ echo "X-Fake-Field: Line Two" &&
+ echo "X-Fake-Field: Line Three" &&
+ git format-patch --stdout first | sed -e "1d"
+ } > patch1-ws.eml &&
sed -n -e "3,\$p" msg >file &&
git add file &&
@@ -167,6 +174,17 @@ test_expect_success 'am applies patch e-mail not in a mbox with CRLF' '
test "$(git rev-parse second^)" = "$(git rev-parse HEAD^)"
'
+test_expect_success 'am applies patch e-mail with preceding whitespace' '
+ rm -fr .git/rebase-apply &&
+ git reset --hard &&
+ git checkout first &&
+ git am patch1-ws.eml &&
+ ! test -d .git/rebase-apply &&
+ git diff --exit-code second &&
+ test "$(git rev-parse second)" = "$(git rev-parse HEAD)" &&
+ test "$(git rev-parse second^)" = "$(git rev-parse HEAD^)"
+'
+
test_expect_success 'setup: new author and committer' '
GIT_AUTHOR_NAME="Another Thor" &&
GIT_AUTHOR_EMAIL="a.thor@example.com" &&

0 comments on commit 0e8341f

Please sign in to comment.