patch 9.0.2095: statusline may look different than expectedv9.0.2095

Problem:  statusline may look different than expected
Solution: do not check for highlighting of stl and stlnc characters

statusline fillchar may be different than expected

If the highlighting group for the statusline for the current window
|hl-StatusLine| or the non-current window |hl-StatusLineNC| are cleared
(or do not differ from each other), than Vim will use the hard-coded
fallback values '^' (for the non-current windows) or '=' (for the
current window).  I believe this was done, to make sure the statusline
will always be visible and be distinguishable from the rest of the
window.

However, this may be unexpected, if a user explicitly defined those
fillchar characters just to notice that those values are then not used
by Vim.

So, let's assume users know what they are doing and just always return
the configured stl and stlnc values.  And if they want the statusline to
be non-distinguishable from the rest of the window space, so be it.  It
is their responsibility and Vim shall not know better what to use.

fixes: #13366
closes: #13488

Signed-off-by: Christian Brabandt <cb@256bit.org>

4 files changed, 44 insertions, 10 deletions

diff --git a/src/screen.c b/src/screen.c
index 3d931ab4e5..fd69cf0b3d 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -4462,16 +4462,7 @@ fillchar_status(int *attr, win_T *wp)
 	*attr = HL_ATTR(HLF_SNC);
 	fill = wp->w_fill_chars.stlnc;
     }
-    // Use fill when there is highlighting, and highlighting of current
-    // window differs, or the fillchars differ, or this is not the
-    // current window
-    if (*attr != 0 && ((HL_ATTR(HLF_S) != HL_ATTR(HLF_SNC)
-			|| wp != curwin || ONE_WINDOW)
-		    || (wp->w_fill_chars.stl != wp->w_fill_chars.stlnc)))
-	return fill;
-    if (wp == curwin)
-	return '^';
-    return '=';
+    return fill;
 }
 
 /*
diff --git a/src/testdir/dumps/Test_statusline_stl_1.dump b/src/testdir/dumps/Test_statusline_stl_1.dump
new file mode 100644
index 0000000000..ab1133cea2
--- /dev/null
+++ b/src/testdir/dumps/Test_statusline_stl_1.dump
@@ -0,0 +1,20 @@
+> +0&#ffffff0@74
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+0#0000000&|N|o| |N|a|m|e|]| @47|0|,|0|-|1| @9|A|l@1
+| @74
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+0#0000000&|N|o| |N|a|m|e|]| @47|0|,|0|-|1| @9|A|l@1
+| @74
diff --git a/src/testdir/test_statusline.vim b/src/testdir/test_statusline.vim
index 1239e4e4ee..22fd78cdef 100644
--- a/src/testdir/test_statusline.vim
+++ b/src/testdir/test_statusline.vim
@@ -610,4 +610,25 @@ func Test_statusline_showcmd()
   call StopVimInTerminal(buf)
 endfunc
 
+func Test_statusline_highlight_group_cleared()
+  CheckScreendump
+
+  " the laststatus option is there to prevent
+  " the code-style test from complaining about
+  " trailing whitespace
+  let lines =<< trim END
+    set fillchars=stl:\ ,stlnc:\  laststatus=2
+    split
+    hi clear StatusLine
+    hi clear StatusLineNC
+  END
+  call writefile(lines, 'XTest_statusline_stl', 'D')
+
+  let buf = RunVimInTerminal('-S XTest_statusline_stl', {})
+
+  call VerifyScreenDump(buf, 'Test_statusline_stl_1', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index d4fe38f286..1e45be1bee 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2095,
+/**/
     2094,
 /**/
     2093,