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patch 8.2.2605: Vim9: string index and slice does not include composing chars

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Problem:    Vim9: string index and slice does not include composing chars.
Solution:   Include composing characters. (issue #6563)
This commit is contained in:
Bram Moolenaar
2021-03-14 18:40:19 +01:00
parent 240309c9bf
commit 0289a093a4
4 changed files with 54 additions and 16 deletions
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29
src/testdir/test_vim9_expr.vim
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@@ -2367,6 +2367,35 @@ def Test_expr7_any_index_slice()
assert_equal('abcd', g:teststring[: -3])
assert_equal('', g:teststring[: -9])
# composing characters are included
g:teststring = 'àéû'
assert_equal('à', g:teststring[0])
assert_equal('é', g:teststring[1])
assert_equal('û', g:teststring[2])
assert_equal('', g:teststring[3])
assert_equal('', g:teststring[4])
assert_equal('û', g:teststring[-1])
assert_equal('é', g:teststring[-2])
assert_equal('à', g:teststring[-3])
assert_equal('', g:teststring[-4])
assert_equal('', g:teststring[-5])
assert_equal('à', g:teststring[0 : 0])
assert_equal('é', g:teststring[1 : 1])
assert_equal('àé', g:teststring[0 : 1])
assert_equal('àéû', g:teststring[0 : -1])
assert_equal('àé', g:teststring[0 : -2])
assert_equal('à', g:teststring[0 : -3])
assert_equal('', g:teststring[0 : -4])
assert_equal('', g:teststring[0 : -5])
assert_equal('àéû', g:teststring[ : ])
assert_equal('àéû', g:teststring[0 : ])
assert_equal('éû', g:teststring[1 : ])
assert_equal('û', g:teststring[2 : ])
assert_equal('', g:teststring[3 : ])
assert_equal('', g:teststring[4 : ])
# blob index cannot be out of range
g:testblob = 0z01ab
assert_equal(0x01, g:testblob[0])