diff options
Diffstat (limited to 'test/functional/ui/multibyte_spec.lua')
| -rw-r--r-- | test/functional/ui/multibyte_spec.lua | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/functional/ui/multibyte_spec.lua b/test/functional/ui/multibyte_spec.lua index 077dd1a779..d72bf27d6b 100644 --- a/test/functional/ui/multibyte_spec.lua +++ b/test/functional/ui/multibyte_spec.lua @@ -228,6 +228,36 @@ describe("multibyte rendering", function() ]]} end) + + it('works with arabicshape and multiple composing chars', function() + -- this tests an important edge case: arabicshape might increase the byte size of the base + -- character in a way so that the last composing char no longer fits. use "g8" on the text + -- to observe what is happening (the final E1 80 B7 gets deleted with 'arabicshape') + -- If we would increase the schar_t size, say from 32 to 64 bytes, we need to extend the + -- test text with even more zalgo energy to still touch this edge case. + + meths.buf_set_lines(0,0,-1,true, {"سلام့̀́̂̃̄̅̆̇̈̉̊̋̌"}) + command('set noarabicshape') + + screen:expect{grid=[[ + ^سلام့̀́̂̃̄̅̆̇̈̉̊̋̌ | + {1:~ }| + {1:~ }| + {1:~ }| + {1:~ }| + | + ]]} + + command('set arabicshape') + screen:expect{grid=[[ + ^ﺱﻼﻣ̀́̂̃̄̅̆̇̈̉̊̋̌ | + {1:~ }| + {1:~ }| + {1:~ }| + {1:~ }| + | + ]]} + end) end) describe('multibyte rendering: statusline', function() |