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patch 9.1.0021: i_CTRL-R- doesn't work for multibyte chars in Replace mode

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Problem:  i_CTRL-R- doesn't work for multibyte chars in Replace mode,
          Coverity complains missing return value for u_save_cursor()
Solution: Use mb_charlen() and del_chars() instead, handle failure mode
          for u_save_cursor() correctly (@zeertzjq)

closes: #13846

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
zeertzjq
2024-01-12 17:43:05 +01:00
committed by Christian Brabandt
parent 4f32c83a77
commit 424ec1f235
3 changed files with 19 additions and 4 deletions
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16
src/testdir/test_registers.vim
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@ -949,7 +949,7 @@ endfunc
func Test_insert_small_delete_replace_mode()
new
call setline(1, ['foo', 'bar', 'foobar', 'bar'])
let @-='foo'
let @- = 'foo'
call cursor(2, 1)
exe ":norm! R\<C-R>-\<C-R>-"
call assert_equal('foofoo', getline(2))
@ -960,9 +960,21 @@ func Test_insert_small_delete_replace_mode()
exe ":norm! R\<C-R>-ZZZZ"
call assert_equal(['foo', 'foofoo', '', 'bfoobarZZZZ'], getline(1, 4))
call cursor(1, 1)
let @-=''
let @- = ''
exe ":norm! R\<C-R>-ZZZ"
call assert_equal(['ZZZ', 'foofoo', '', 'bfoobarZZZZ'], getline(1, 4))
let @- = 'βbβ'
call cursor(4, 1)
exe ":norm! R\<C-R>-"
call assert_equal(['ZZZ', 'foofoo', '', 'βbβobarZZZZ'], getline(1, 4))
let @- = 'bβb'
call cursor(4, 1)
exe ":norm! R\<C-R>-"
call assert_equal(['ZZZ', 'foofoo', '', 'bβbobarZZZZ'], getline(1, 4))
let @- = 'βbβ'
call cursor(4, 1)
exe ":norm! R\<C-R>-"
call assert_equal(['ZZZ', 'foofoo', '', 'βbβobarZZZZ'], getline(1, 4))
bwipe!
endfunc