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authorzeertzjq <zeertzjq@outlook.com>2024-09-23 12:04:07 +0800
committerGitHub <noreply@github.com>2024-09-23 12:04:07 +0800
commitbfe0acaea167a5ce18d4c63f65ccd45966203413 (patch)
treea53ce3e5b327e8b65b8892b73648016bd13ae989 /test/functional/ui/diff_spec.lua
parente83ce331da9165ad611b31aef9965fa74abaea14 (diff)
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vim-patch:9.1.0740: incorrect internal diff with empty file (#30471)
Problem: incorrect internal diff with an empty file Solution: Set pointer to NULL, instead of using an empty line file (Yukihiro Nakadaira) When using internal diff, empty file is read as one empty line file. So result differs from external diff. closes: vim/vim#15719 https://github.com/vim/vim/commit/f1694b439bb175d956b49da620f1253462ec507b Co-authored-by: Yukihiro Nakadaira <yukihiro.nakadaira@gmail.com>
Diffstat (limited to 'test/functional/ui/diff_spec.lua')
-rw-r--r--test/functional/ui/diff_spec.lua28
1 files changed, 28 insertions, 0 deletions
diff --git a/test/functional/ui/diff_spec.lua b/test/functional/ui/diff_spec.lua
index bad35dd2af..8db6f776d1 100644
--- a/test/functional/ui/diff_spec.lua
+++ b/test/functional/ui/diff_spec.lua
@@ -614,6 +614,34 @@ int main(int argc, char **argv)
]])
end)
+ it('Diff empty and non-empty file', function()
+ write_file(fname, '', false)
+ write_file(fname_2, 'foo\nbar\nbaz', false)
+ reread()
+
+ feed(':set diffopt=filler<cr>')
+ screen:expect([[
+ {7: }{23:------------------}│{7: }{22:foo }|
+ {7: }{23:------------------}│{7: }{22:bar }|
+ {7: }{23:------------------}│{7: }{22:baz }|
+ {7: }^ │{1:~ }|
+ {1:~ }│{1:~ }|*10
+ {3:<onal-diff-screen-1 }{2:<l-diff-screen-1.2 }|
+ :set diffopt=filler |
+ ]])
+
+ feed(':set diffopt+=internal<cr>')
+ screen:expect([[
+ {7: }{23:------------------}│{7: }{22:foo }|
+ {7: }{23:------------------}│{7: }{22:bar }|
+ {7: }{23:------------------}│{7: }{22:baz }|
+ {7: }^ │{1:~ }|
+ {1:~ }│{1:~ }|*10
+ {3:<onal-diff-screen-1 }{2:<l-diff-screen-1.2 }|
+ :set diffopt+=internal |
+ ]])
+ end)
+
it('diffopt+=icase', function()
write_file(fname, 'a\nb\ncd\n', false)
write_file(fname_2, 'A\nb\ncDe\n', false)