1 files changed, 43 insertions, 0 deletions
diff --git a/src/testdir/test_matchadd_conceal_utf8.vim b/src/testdir/test_matchadd_conceal_utf8.vim
new file mode 100644
index 0000000..d280c15
--- /dev/null
+++ b/src/testdir/test_matchadd_conceal_utf8.vim
@@ -0,0 +1,43 @@
+" Test for matchadd() and conceal feature using utf-8.
+if !has('conceal')
+  finish
+endif
+
+if !has('gui_running') && has('unix')
+  set term=ansi
+endif
+
+func s:screenline(lnum) abort
+  let line = []
+  for c in range(1, winwidth(0))
+    call add(line, nr2char(screenchar(a:lnum, c)))
+  endfor
+  return s:trim(join(line, ''))
+endfunc
+
+func s:trim(str) abort
+  return matchstr(a:str,'^\s*\zs.\{-}\ze\s*$')
+endfunc
+
+func Test_match_using_multibyte_conceal_char()
+  new
+  setlocal concealcursor=n conceallevel=1
+
+  1put='# This is a Test'
+  "             1234567890123456
+  let expect = '#ˑThisˑisˑaˑTest'
+
+  call cursor(1, 1)
+  call matchadd('Conceal', '\%2l ', 20, -1, {'conceal': "\u02d1"})
+  redraw!
+
+  let lnum = 2
+  call assert_equal(expect, s:screenline(lnum))
+  call assert_notequal(screenattr(lnum, 1), screenattr(lnum, 2))
+  call assert_equal(screenattr(lnum, 2), screenattr(lnum, 7))
+  call assert_equal(screenattr(lnum, 2), screenattr(lnum, 10))
+  call assert_equal(screenattr(lnum, 2), screenattr(lnum, 12))
+  call assert_equal(screenattr(lnum, 1), screenattr(lnum, 16))
+
+  quit!
+endfunc