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patch 9.0.0726: looping over list of lists works in script, not in function

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Problem:    Looping over list of lists and changing the list contents works in
            Vim9 script, not in a compiled function.
Solution:   Mark the loop variable final instead of const. (closes #11347)
This commit is contained in:
Bram Moolenaar
2022-10-11 21:41:25 +01:00
parent 7e017461e2
commit 159b2d5bfc
3 changed files with 17 additions and 1 deletions
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14
src/testdir/test_vim9_script.vim
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@@ -2275,6 +2275,20 @@ def Test_for_loop()
v9.CheckDefAndScriptSuccess(lines)
enddef
def Test_for_loop_list_of_lists()
# loop variable is final, not const
var lines =<< trim END
# Filter out all odd numbers in each sublist
var list: list<list<number>> = [[1], [1, 2], [1, 2, 3], [1, 2, 3, 4]]
for i in list
filter(i, (_, n: number): bool => n % 2 == 0)
endfor
assert_equal([[], [2], [2], [2, 4]], list)
END
v9.CheckDefAndScriptSuccess(lines)
enddef
def Test_for_loop_with_closure()
# using the loop variable in a closure results in the last used value
var lines =<< trim END