blame: CRLF in the working tree and LF in the repotb/blame-resurrect-convert-to-git

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2 files changed, 16 insertions, 3 deletions

diff --git a/builtin/blame.c b/builtin/blame.c
index eefd6bc2e1..c69d5fa99d 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -2106,6 +2106,7 @@ 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 2a3469bcbe..7ad66149c6 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
 '