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patch 8.2.0868: trim() always trims both ends

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Problem:    trim() always trims both ends.
Solution:   Add an argument to only trim the beginning or end. (Yegappan
            Lakshmanan, closes #6126)
This commit is contained in:
Bram Moolenaar
2020-05-31 22:20:36 +02:00
parent fccd93f091
commit 2245ae18e3
4 changed files with 84 additions and 38 deletions
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7
src/testdir/test_functions.vim
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@@ -1497,6 +1497,13 @@ func Test_trim()
call assert_equal("a", trim("a", ""))
call assert_equal("", trim("", "a"))
call assert_equal("vim", trim(" vim ", " ", 0))
call assert_equal("vim ", trim(" vim ", " ", 1))
call assert_equal(" vim", trim(" vim ", " ", 2))
call assert_fails('eval trim(" vim ", " ", [])', 'E745:')
call assert_fails('eval trim(" vim ", " ", -1)', 'E475:')
call assert_fails('eval trim(" vim ", " ", 3)', 'E475:')
let chars = join(map(range(1, 0x20) + [0xa0], {n -> n->nr2char()}), '')
call assert_equal("x", trim(chars . "x" . chars))