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vim-patch:8.2.1794: no falsy Coalescing operator

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Problem:    No falsy Coalescing operator.
Solution:   Add the "??" operator.  Fix mistake with function argument count.

92f26c256e

Cherry-pick tv2bool() into eval/typval.c.
Cherry-pick *??* tag from Vim runtime.

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-04-14 11:00:17 +08:00
parent 7caf0eafd8
commit d6e2804ab4
5 changed files with 137 additions and 31 deletions
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22
test/old/testdir/test_expr.vim
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@@ -39,6 +39,28 @@ func Test_version()
call assert_false(has('patch-9.9.1'))
endfunc
func Test_op_falsy()
call assert_equal(v:true, v:true ?? 456)
call assert_equal(123, 123 ?? 456)
call assert_equal('yes', 'yes' ?? 456)
call assert_equal(0z00, 0z00 ?? 456)
call assert_equal([1], [1] ?? 456)
call assert_equal(#{one: 1}, #{one: 1} ?? 456)
if has('float')
call assert_equal(0.1, 0.1 ?? 456)
endif
call assert_equal(456, v:false ?? 456)
call assert_equal(456, 0 ?? 456)
call assert_equal(456, '' ?? 456)
call assert_equal(456, 0z ?? 456)
call assert_equal(456, [] ?? 456)
call assert_equal(456, {} ?? 456)
if has('float')
call assert_equal(456, 0.0 ?? 456)
endif
endfunc
func Test_dict()
let d = {'': 'empty', 'a': 'a', 0: 'zero'}
call assert_equal('empty', d[''])