feat(api): relax statusline fillchar width check

Treat fillchar as single-width even if it isn't.

1 files changed, 9 insertions, 9 deletions

diff --git a/test/functional/api/vim_spec.lua b/test/functional/api/vim_spec.lua
index 71cd055e08..e945a6c706 100644
--- a/test/functional/api/vim_spec.lua
+++ b/test/functional/api/vim_spec.lua
@@ -2621,24 +2621,24 @@ describe('API', function()
       eq({ str = 'a━━━b', width = 5 },
          meths.eval_statusline('a%=b', { fillchar = '━', maxwidth = 5 }))
     end)
-    it('rejects double-width fillchar', function()
-      eq('fillchar must be a single-width character',
-         pcall_err(meths.eval_statusline, '', { fillchar = '哦' }))
+    it('treats double-width fillchar as single-width', function()
+      eq({ str = 'a哦哦哦b', width = 5 },
+         meths.eval_statusline('a%=b', { fillchar = '哦', maxwidth = 5 }))
     end)
-    it('rejects control character fillchar', function()
-      eq('fillchar must be a single-width character',
-         pcall_err(meths.eval_statusline, '', { fillchar = '\a' }))
+    it('treats control character fillchar as single-width', function()
+      eq({ str = 'a\031\031\031b', width = 5 },
+         meths.eval_statusline('a%=b', { fillchar = '\031', maxwidth = 5 }))
     end)
     it('rejects multiple-character fillchar', function()
-      eq('fillchar must be a single-width character',
+      eq('fillchar must be a single character',
          pcall_err(meths.eval_statusline, '', { fillchar = 'aa' }))
     end)
     it('rejects empty string fillchar', function()
-      eq('fillchar must be a single-width character',
+      eq('fillchar must be a single character',
          pcall_err(meths.eval_statusline, '', { fillchar = '' }))
     end)
     it('rejects non-string fillchar', function()
-      eq('fillchar must be a single-width character',
+      eq('fillchar must be a single character',
          pcall_err(meths.eval_statusline, '', { fillchar = 1 }))
     end)
     describe('highlight parsing', function()