From: Bram Moolenaar <Bram@vim.org>
Date: Sun, 21 Mar 2021 13:39:19 +0000 (+0100)
Subject: patch 8.2.2633: multi-byte 'fillchars' for folding do not show properly
X-Git-Tag: v8.2.2633
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=196a1f740981e878091fa124a400d1fc4bfa2bb0;p=vim

patch 8.2.2633: multi-byte 'fillchars' for folding do not show properly

Problem:    Multi-byte 'fillchars' for folding do not show properly.
Solution:   Handle multi-byte characters correctly. (Yegappan Lakshmanan,
            closes #7983, closes #7955)
---

diff --git a/src/screen.c b/src/screen.c
index 84951c5cc..d219b13c3 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -295,8 +295,13 @@ fill_foldcolumn(
     if (closed)
     {
 	if (symbol != 0)
-	    // rollback length
+	{
+	    // rollback length and the character
 	    byte_counter -= len;
+	    if (len > 1)
+		// for a multibyte character, erase all the bytes
+		vim_memset(p + byte_counter, ' ', len);
+	}
 	symbol = fill_foldclosed;
 	len = utf_char2bytes(symbol, &p[byte_counter]);
 	byte_counter += len;
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index d451b1eb4..a032f4536 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1061,6 +1061,12 @@ func Test_foldcolumn_multibyte_char()
   set fillchars+=foldopen:▾,foldsep:│,foldclose:▸
   call s:mbyte_fillchar_tests('▾', '▸', '│')
 
+  " Use a mix of multi-byte and single-byte characters
+  set fillchars+=foldopen:¬,foldsep:\|,foldclose:+
+  call s:mbyte_fillchar_tests('¬', '+', '|')
+  set fillchars+=foldopen:+,foldsep:\|,foldclose:¬
+  call s:mbyte_fillchar_tests('+', '¬', '|')
+
   bw!
   set foldenable& fdc& fdm& fillchars&
 endfunc
diff --git a/src/version.c b/src/version.c
index be2c759d9..350f0a133 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2633,
 /**/
     2632,
 /**/