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[PATCH v1 1/1] correct apply for files commited with CRLF

From
tboegi@web.de <tboegi@web.de>
Date
Aug 2, 2017, 20:42 UTC
Message-ID
<20170802204203.29484-1-tboegi@web.de>
In-Reply-To
<cceaf377-73e0-e733-20ba-c4e547226382@web.de>
From: Torsten Bögershausen <tboegi@web.de>

git apply does not find the source lines when files have CRLF in the index and core.autocrlf is true: These files should not get the CRLF converted to LF. Because cmd_apply() does not load the index, this does not work, CRLF are converted into LF and apply fails.

Fix this in the spirit of commit a08feb8ef0b6, "correct blame for files commited with CRLF" by loading the index.

As an optimization, skip read_cache() when no conversion is specified for this path.

Reported-by: Anthony Sottile <asottile@umich.edu>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
 apply.c         |  2 ++
 t/t0020-crlf.sh | 12 ++++++++++++
 2 files changed, 14 insertions(+)
diff --git a/apply.c b/apply.c
index f2d599141d..66b8387360 100644
--- a/apply.c
+++ b/apply.c
@@ -2278,6 +2278,8 @@ static int read_old_data(struct stat *st, const char *path, struct strbuf *buf)
 	case S_IFREG:
 		if (strbuf_read_file(buf, path, st->st_size) != st->st_size)
 			return error(_("unable to open or read %s"), path);
+		if (would_convert_to_git(&the_index, path))
+			read_cache();
 		convert_to_git(&the_index, path, buf->buf, buf->len, buf, 0);
 		return 0;
 	default:
diff --git a/t/t0020-crlf.sh b/t/t0020-crlf.sh
index 71350e0657..6611f8a6f6 100755
--- a/t/t0020-crlf.sh
+++ b/t/t0020-crlf.sh
@@ -386,4 +386,16 @@ test_expect_success 'New CRLF file gets LF in repo' '
 	test_cmp alllf alllf2
 '
 
+test_expect_success 'CRLF in repo, apply with autocrlf=true' '
+	git config core.autocrlf false &&
+	printf "1\r\n2\r\n" >crlf &&
+	git add crlf &&
+	git commit -m "commit crlf with crlf" &&
+	git config core.autocrlf true &&
+	printf "1\r\n2\r\n\r\n\r\n\r\n" >crlf &&
+	git diff >patch &&
+	git checkout -- . &&
+	git apply patch
+'
+
 test_done
-- 
2.13.2.533.ge0aaa1b
Previous: Torsten BögershausenNext: Junio C Hamano
Message 5 of 36 in “core.autocrlf=true causes `git apply` to fail on patch generated with `git diff-index HEAD --patch`”
  1. Anthony SottileAug 1, 2017
  2. Torsten BögershausenAug 1, 2017
  3. Anthony SottileAug 1, 2017
  4. Torsten BögershausenAug 2, 2017
  5. 1/1 correct apply for files commited with CRLFtboegi@web.de, Aug 2, 2017
  6. Junio C HamanoAug 2, 2017
  7. Torsten BögershausenAug 4, 2017
  8. Junio C HamanoAug 4, 2017
  9. Junio C HamanoAug 4, 2017
  10. Junio C HamanoAug 2, 2017
  11. Torsten BögershausenAug 12, 2017
  12. Torsten BögershausenAug 12, 2017
  13. convert: Add SAFE_CRLF_KEEP_CRLFtboegi@web.de, Aug 12, 2017
  14. File commited with CRLF should roundtrip diff and applytboegi@web.de, Aug 12, 2017
  15. Junio C HamanoAug 14, 2017
  16. 1/2 convert: Add SAFE_CRLF_KEEP_CRLFtboegi@web.de, Aug 17, 2017
  17. 2/2 File commited with CRLF should roundtrip diff and applytboegi@web.de, Aug 17, 2017
  18. Junio C HamanoAug 17, 2017
  19. 1/2 convert: Add SAFE_CRLF_KEEP_CRLFtboegi@web.de, Aug 17, 2017
  20. 2/2 File commited with CRLF should roundtrip diff and applytboegi@web.de, Aug 17, 2017
  21. Junio C HamanoAug 17, 2017
  22. Junio C HamanoAug 17, 2017
  23. 1/2 convert: Add SAFE_CRLF_KEEP_CRLFtboegi@web.de, Aug 19, 2017
  24. 2/2 File commited with CRLF should roundtrip diff and applytboegi@web.de, Aug 19, 2017
  25. 1/2 convert: Add SAFE_CRLF_KEEP_CRLFtboegi@web.de, Aug 13, 2017
  26. 2/2 File commited with CRLF should roundtrip diff and applytboegi@web.de, Aug 13, 2017
  27. 3/2 apply: remove unused member apply_state.flagsJunio C Hamano, Aug 16, 2017
  28. Junio C HamanoAug 16, 2017
  29. 4/2 apply: only pay attention to CRLF in the preimageJunio C Hamano, Aug 16, 2017
  30. 5/2 apply: localize the CRLF business to read_old_data()Junio C Hamano, Aug 16, 2017
  31. 6/2 apply: clarify read_old_data() is about no-index caseJunio C Hamano, Aug 16, 2017
  32. Torsten BögershausenAug 17, 2017
  33. Junio C HamanoAug 17, 2017
  34. Junio C HamanoAug 17, 2017
  35. Torsten BögershausenAug 17, 2017
  36. Junio C HamanoAug 17, 2017

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