[PATCH v5] blame: CRLF in the working tree and LF in the repo

["Torsten Bögershausen" <tboegi@web.de>]

A typical setup under Windows is to set core.eol to CRLF, and text
files are marked as "text" in .gitattributes, or core.autocrlf is
set to true.

After 4d4813a5 "git blame" no longer works as expected for such a
set-up.  Every line is annotated as "Not Committed Yet", even though
the working directory is clean.  This is because the commit removed
the conversion in blame.c for all files, with or without CRLF in the
repo.

Having files with CRLF in the repo and core.autocrlf=input is a
temporary situation, and the files, if committed as is, will be
normalized in the repo, which _will_ be a notable change.  Blaming
them with "Not Committed Yet" is the right result.  Revert commit
4d4813a5 which was a misguided attempt to "solve" a non-problem.

Add two test cases in t8003 to verify the correct CRLF conversion.

Suggested-By: Stepan Kasal <kasal@ucw.cz>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
Changes against pu:
- fixed typo typical
- Add the 2 test cases suggested originally be Stepan,
  mention them in the commit msg and say
  "Suggested-By" instead of "Reported-By"
- This should be in line with Junios suggestion not to introduce
  additional (and somewhat unrelated) TC's

 builtin/blame.c               |  1 +
 t/t8003-blame-corner-cases.sh | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/builtin/blame.c b/builtin/blame.c
index 06484c2..8d70623 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -2348,6 +2348,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt,
 		if (strbuf_read(&buf, 0, 0) < 0)
 			die_errno("failed to read from stdin");
 	}
+	convert_to_git(path, buf.buf, buf.len, &buf, 0);
 	origin->file.ptr = buf.buf;
 	origin->file.size = buf.len;
 	pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_sha1);
diff --git a/t/t8003-blame-corner-cases.sh b/t/t8003-blame-corner-cases.sh
index 32895e5..16f1442 100755
--- a/t/t8003-blame-corner-cases.sh
+++ b/t/t8003-blame-corner-cases.sh
@@ -191,12 +191,24 @@ test_expect_success 'indent of line numbers, ten lines' '
 	test $(grep -c "  " actual) = 9
 '
 
-test_expect_success 'blaming files with CRLF newlines' '
+test_expect_success 'setup file with CRLF newlines' '
 	git config core.autocrlf false &&
-	printf "testcase\r\n" >crlffile &&
+	printf "testcase\n" >crlffile &&
 	git add crlffile &&
 	git commit -m testcase &&
-	git -c core.autocrlf=input blame crlffile >actual &&
+	printf "testcase\r\n" >crlffile
+'
+
+test_expect_success 'blame file with CRLF core.autocrlf true' '
+	git config core.autocrlf true &&
+	git blame crlffile >actual &&
+	grep "A U Thor" actual
+'
+
+test_expect_success 'blame file with CRLF attributes text' '
+	git config core.autocrlf false &&
+	echo "crlffile text" >.gitattributes &&
+	git blame crlffile >actual &&
 	grep "A U Thor" actual
 '
 
-- 
2.2.0.rc1.790.ge19fcd2