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vim-patch:8.2.3848: cannot use reduce() for a string

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Problem:    Cannot use reduce() for a string.
Solution:   Make reduce() work with a string. (Naruhiko Nishino, closes vim/vim#9366)

0ccb5842f5

Omit tv_get_first_char() as it doesn't really save much code.

Co-authored-by: rbtnn <naru123456789@gmail.com>
This commit is contained in:
zeertzjq
2023-08-17 13:41:43 +08:00
parent 7f51829cf7
commit c5576fcc80
6 changed files with 88 additions and 19 deletions
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29
test/old/testdir/test_listdict.vim
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@@ -1,4 +1,5 @@
" Tests for the List and Dict types
scriptencoding utf-8
source vim9.vim
@@ -900,7 +901,7 @@ func Test_reverse_sort_uniq()
call assert_fails("call sort([1, 2], function('min'))", "E118:")
endfunc
" reduce a list or a blob
" reduce a list, blob or string
func Test_reduce()
let lines =<< trim END
call assert_equal(1, reduce([], LSTART acc, val LMIDDLE acc + val LEND, 1))
@@ -923,6 +924,16 @@ func Test_reduce()
call assert_equal(0xff, reduce(0zff, LSTART acc, val LMIDDLE acc + val LEND))
call assert_equal(2 * (2 * 0xaf + 0xbf) + 0xcf, reduce(0zAFBFCF, LSTART acc, val LMIDDLE 2 * acc + val LEND))
call assert_equal('x,y,z', 'xyz'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal('', ''->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND, ''))
call assert_equal('あ,い,う,え,お,😊,💕', 'あいうえお😊💕'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal('😊,あ,い,う,え,お,💕', 'あいうえお💕'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND, '😊'))
call assert_equal('ऊ,ॠ,ॡ', reduce('ऊॠॡ', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal('c,à,t', reduce('càt', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal('Å,s,t,r,ö,m', reduce('Åström', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal('Å,s,t,r,ö,m', reduce('Åström', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
call assert_equal(',a,b,c', reduce('abc', LSTART acc, val LMIDDLE acc .. ',' .. val LEND, v:_null_string))
END
call CheckLegacyAndVim9Success(lines)
@@ -931,13 +942,23 @@ func Test_reduce()
call assert_fails("call reduce([], { acc, val -> acc + val })", 'E998: Reduce of an empty List with no initial value')
call assert_fails("call reduce(0z, { acc, val -> acc + val })", 'E998: Reduce of an empty Blob with no initial value')
call assert_fails("call reduce('', { acc, val -> acc + val })", 'E998: Reduce of an empty String with no initial value')
call assert_fails("call reduce(v:_null_string, { acc, val -> acc + val })", 'E998: Reduce of an empty String with no initial value')
call assert_fails("call reduce({}, { acc, val -> acc + val }, 1)", 'E897:')
call assert_fails("call reduce(0, { acc, val -> acc + val }, 1)", 'E897:')
call assert_fails("call reduce('', { acc, val -> acc + val }, 1)", 'E897:')
call assert_fails("call reduce({}, { acc, val -> acc + val }, 1)", 'E1098:')
call assert_fails("call reduce(0, { acc, val -> acc + val }, 1)", 'E1098:')
call assert_fails("call reduce([1, 2], 'Xdoes_not_exist')", 'E117:')
call assert_fails("echo reduce(0z01, { acc, val -> 2 * acc + val }, '')", 'E39:')
" call assert_fails("vim9 reduce(0, (acc, val) => (acc .. val), '')", 'E1252:')
" call assert_fails("vim9 reduce({}, (acc, val) => (acc .. val), '')", 'E1252:')
" call assert_fails("vim9 reduce(0.1, (acc, val) => (acc .. val), '')", 'E1252:')
" call assert_fails("vim9 reduce(function('tr'), (acc, val) => (acc .. val), '')", 'E1252:')
call assert_fails("call reduce('', { acc, val -> acc + val }, 1)", 'E1253:')
call assert_fails("call reduce('', { acc, val -> acc + val }, {})", 'E1253:')
call assert_fails("call reduce('', { acc, val -> acc + val }, 0.1)", 'E1253:')
call assert_fails("call reduce('', { acc, val -> acc + val }, function('tr'))", 'E1253:')
let g:lut = [1, 2, 3, 4]
func EvilRemove()
call remove(g:lut, 1)