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patch 8.0.0571: negative line number when using :z^ in an empty buffer

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Problem:    The cursor line number becomes negative when using :z^ in an empty
            buffer. (neovim #6557)
Solution:   Correct the line number.  Also reset the column.
This commit is contained in:
Bram Moolenaar
2017-04-20 21:12:30 +02:00
parent c03944151f
commit a364cdb648
3 changed files with 17 additions and 2 deletions
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9
src/testdir/test_ex_z.vim
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@@ -68,7 +68,7 @@ func Test_z()
bw!
endfunc
func Test_z_bug()
func Test_z_overflow()
" This used to access invalid memory as a result of an integer overflow
" and freeze vim.
normal ox
@@ -76,3 +76,10 @@ func Test_z_bug()
z777777776666666
')
endfunc
func Test_z_negative_lnum()
new
z^
call assert_equal(1, line('.'))
bwipe!
endfunc