Signed-off-by: Elijah Newren <new...@gmail.com>
---
Documentation/git-fast-import.txt | 7 +++++-
t/t9300-fast-import.sh | 37 +++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/Documentation/git-fast-import.txt
b/Documentation/git-fast-import.txt
index 43ab3b1637..339b6e7e98 100644
--- a/Documentation/git-fast-import.txt
+++ b/Documentation/git-fast-import.txt
@@ -422,7 +422,12 @@ However it is recommended that a `filedeleteall` command
precede
all `filemodify`, `filecopy`, `filerename` and `notemodify` commands in
the same commit, as `filedeleteall` wipes the branch clean (see below).
-The `LF` after the command is optional (it used to be required).
+The `LF` after the command is optional (it used to be required). Note
+that for reasons of backward compatibility, if the commit ends with a
+`data` command (i.e. it has has no `from`, `merge`, `filemodify`,
+`filedelete`, `filecopy`, `filerename`, `filedeleteall` or
+`notemodify` commands) then two `LF` commands may appear at the end of
+the command instead of just one.
`author`
^^^^^^^^
diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh
index 59a13b6a77..c304c8c47c 100755
--- a/t/t9300-fast-import.sh
+++ b/t/t9300-fast-import.sh
@@ -3262,4 +3262,41 @@ test_expect_success PIPE 'V: checkpoint updates tags
after tag' '
background_import_still_running
'
+###
+### series W (get-mark and empty orphan commits)
+###
+
+cat >>W-input <<-W_INPUT_END
+ commit refs/heads/W-branch
+ mark :1
+ author Full Name <u...@company.tld> 1000000000 +0100
+ committer Full Name <u...@company.tld> 1000000000 +0100
+ data 27
+ Intentionally empty commit
+ LFsget-mark :1
+ W_INPUT_END
+
+test_expect_failure !MINGW 'W: get-mark & empty orphan commit with no
newlines' '
+ sed -e s/LFs// W-input | tr L "\n" | git fast-import
+'
+
+test_expect_failure !MINGW 'W: get-mark & empty orphan commit with one
newline' '
+ sed -e s/LFs/L/ W-input | tr L "\n" | git fast-import
+'
+
+test_expect_success !MINGW 'W: get-mark & empty orphan commit with ugly second
newline' '
+ # Technically, this should fail as it has too many linefeeds
+ # according to the grammar in fast-import.txt. But, for whatever
+ # reason, it works. Since using the correct number of newlines
+ # does not work with older (pre-2.22) versions of git, allow apps
+ # that used this second-newline workaround to keep working by
+ # checking it with this test...
+ sed -e s/LFs/LL/ W-input | tr L "\n" | git fast-import
+'
+
+test_expect_success !MINGW 'W: get-mark & empty orphan commit with erroneous
third newline' '
+ # ...but do NOT allow more empty lines than that (see previous test).
+ sed -e s/LFs/LLL/ W-input | tr L "\n" | test_must_fail git fast-import
+'
+
test_done
--
2.21.0.rc2.5.g8f70af2367
