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patch 8.2.2616: Vim9: if 'cpo' is change in Vim9 script it may be restored

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Problem:    Vim9: if 'cpo' is change in Vim9 script it may be restored.
Solution:   Apply the changes to 'cpo' to the restored value.
This commit is contained in:
Bram Moolenaar
2021-03-17 17:46:00 +01:00
parent a4c81bea38
commit 3e1916947d
4 changed files with 41 additions and 4 deletions
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12
src/testdir/test_vim9_script.vim
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@@ -1250,17 +1250,23 @@ def Test_vim9_import_export()
delete('Xexport.vim')
# Check that in a Vim9 script 'cpo' is set to the Vim default.
set cpo&vi
var cpo_before = &cpo
# Flags added or removed are also applied to the restored value.
set cpo=abcd
var lines =<< trim END
vim9script
g:cpo_in_vim9script = &cpo
set cpo+=f
set cpo-=c
g:cpo_after_vim9script = &cpo
END
writefile(lines, 'Xvim9_script')
source Xvim9_script
assert_equal(cpo_before, &cpo)
assert_equal('fabd', &cpo)
set cpo&vim
assert_equal(&cpo, g:cpo_in_vim9script)
var newcpo = substitute(&cpo, 'c', '', '') .. 'f'
assert_equal(newcpo, g:cpo_after_vim9script)
delete('Xvim9_script')
enddef