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Before d473e2e0e8 (diff.c: convert -U|--unified, 2019-01-27), -U and
--unified are implemented with a custom parser opt_arg() in diff.c. I
didn't check this code carefully and not realize that it's the
equivalent of PARSE_OPT_NONEG | PARSE_OPT_OPTARG.
In other words, if -U is specified without any argument, the option
should be accepted, and the default value should be used. Without
PARSE_OPT_OPTARG, parse_options() will reject this case and cause a
regression.
Reported-by: Bryan Turner <bturner@atlassian.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
29 lines
377 B
Text
29 lines
377 B
Text
$ git diff -U1 initial..side
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diff --git a/dir/sub b/dir/sub
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index 35d242b..7289e35 100644
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--- a/dir/sub
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+++ b/dir/sub
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@@ -2 +2,3 @@ A
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B
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+1
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+2
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diff --git a/file0 b/file0
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index 01e79c3..f4615da 100644
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--- a/file0
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+++ b/file0
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@@ -3 +3,4 @@
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3
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+A
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+B
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+C
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diff --git a/file3 b/file3
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new file mode 100644
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index 0000000..7289e35
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--- /dev/null
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+++ b/file3
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@@ -0,0 +1,4 @@
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+A
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+B
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+1
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+2
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$
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