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Author SHA1 Message Date
Eric Sunshine
ca02ad3447 Side-step sed line-ending "corruption" leading to t6038 failure.
By default, MSYS sed throws away CR from CRLF line-endings.  Tests
t6038.5 and t6038.6 employ sed to normalize conflict output of git-merge
for validation purposes.  These tests expect CRLF line-endings to be
present in the normalized output of git-merge, and thus fail when sed
undesirably removes CR.  Fix by employing sed's -b/--binary switch to
suppress its default behavior of dropping CR characters.

Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
2010-10-03 23:29:19 +01:00
Jonathan Nieder
beeeb45493 t6038 (merge.renormalize): check that it can be turned off
An unusual sort of person (not me) may even enjoy the conflicts
from line-ending changes.  But more importantly, it is useful to
document that behavior so we can more easily notice if it changes
in an uncontrolled way while no one is watching.

Cc: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-06 09:20:00 -07:00
Jonathan Nieder
d347cee4de t6038 (merge.renormalize): try checkout -m and cherry-pick
checkout -m and cherry-pick have not been wired up to respect
merge.renormalize, but a naïve user would not know that.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-06 09:20:00 -07:00
Jonathan Nieder
18acb30ee4 t6038 (merge.renormalize): style nitpicks
Some tweaks to simplify adding and running tests.

 - Use test_tick for predictable, sort of realistic commit dates;

 - Use test_cmp as "test_cmp expected actual" --- some crazy
   content that was not expected should cause the test to fail;

 - Remove and re-add all files at the start of each test so the
   worktree is easier to think about;

 - Avoid using cat where not necessary for clarity.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-06 09:20:00 -07:00
Eyvind Bernhardsen
331a1838b2 Try normalizing files to avoid delete/modify conflicts when merging
If a file is modified due to normalization on one branch, and deleted on
another, a merge of the two branches will result in a delete/modify
conflict for that file even if it is otherwise unchanged.

Try to avoid the conflict by normalizing and comparing the "base" file
and the modified file when their sha1s differ.  If they compare equal,
the file is considered unmodified and is deleted.

Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-02 15:44:34 -07:00
Eyvind Bernhardsen
f217f0e86d Avoid conflicts when merging branches with mixed normalization
Currently, merging across changes in line ending normalization is
painful since files containing CRLF will conflict with normalized files,
even if the only difference between the two versions is the line
endings.  Additionally, any "real" merge conflicts that exist are
obscured because every line in the file has a conflict.

Assume you start out with a repo that has a lot of text files with CRLF
checked in (A):

      o---C
     /     \
    A---B---D

B: Add "* text=auto" to .gitattributes and normalize all files to
   LF-only

C: Modify some of the text files

D: Try to merge C

You will get a ridiculous number of LF/CRLF conflicts when trying to
merge C into D, since the repository contents for C are "wrong" wrt the
new .gitattributes file.

Fix ll-merge so that the "base", "theirs" and "ours" stages are passed
through convert_to_worktree() and convert_to_git() before a three-way
merge.  This ensures that all three stages are normalized in the same
way, removing from consideration differences that are only due to
normalization.

This feature is optional for now since it changes a low-level mechanism
and is not necessary for the majority of users.  The "merge.renormalize"
config variable enables it.

Signed-off-by: Eyvind Bernhardsen <eyvind.bernhardsen@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-02 15:43:15 -07:00