patch 9.0.0442: virtual text "above" doesn't handel line numbers

Problem:    Virtual text "above" doesn't handel line numbers.
Solution:   Take the left column offset into account. (issue #11084)
            Also make padding work.

src/drawline.c

@@ -350,7 +350,7 @@ text_prop_position(
 	if (above)
 	{
 	    before = 0;
-	    after = wp->w_width - cells;
+	    after = wp->w_width - cells - win_col_off(wp) - padding;
 	}
 	else
 	{
@@ -436,6 +436,8 @@ text_prop_position(
 		*p_extra = l;
 		*n_extra = n_used + before + after + padding;
 		*n_attr = mb_charlen(*p_extra);
+		if (above)
+		    *n_attr -= padding;
 		*n_attr_skip = before + padding + col_off;
 	    }
 	}
@@ -1858,8 +1860,8 @@ win_line(
 				dont_use_showbreak = TRUE;
 			    }
 #endif
-			    if ((right || above || below || !wrap || padding > 0)
+			    if ((right || above || below || !wrap
-							    && wp->w_width > 2)
+					    || padding > 0) && wp->w_width > 2)
 			    {
 				char_u	*prev_p_extra = wlv.p_extra;
 				int	start_line;

src/testdir/dumps/Test_prop_with_text_above_1.dump

@@ -2,7 +2,7 @@
 |s+0&#ffd7ff255|e|c|o|n|d| |t|h|i|n|g| |a|b|o|v|e| @41
 |o+0&#ffffff0|n|e| |t|w|o| @52
 |t|h|r>e@1| |f|o|u|r| @49
-|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @46
+@3|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @43
 |f+0&#ffffff0|i|v|e| |s|i|x| @51
 |~+0#4040ff13&| @58
 |~| @58

src/testdir/dumps/Test_prop_with_text_above_2.dump

@@ -2,7 +2,7 @@
 |s+0&#ffd7ff255|e|c|o|n|d| |t|h|i|n|g| |a|b|o|v|e| @41
 >o+0&#ffffff0|n|e| |t|w|o| @52
 |t|h|r|e@1| |f|o|u|r| @49
-|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @46
+@3|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @43
 |f+0&#ffffff0|i|v|e| |s|i|x| @51
 |~+0#4040ff13&| @58
 |~| @58

src/testdir/dumps/Test_prop_with_text_above_3.dump

@@ -2,7 +2,7 @@
 |s+0&#ffd7ff255|e|c|o|n|d| |t|h|i|n|g| |a|b|o|v|e| @41
 |i+0&#ffffff0|n|s|e|r|t|e|d> |o|n|e| |t|w|o| @43
 |t|h|r|e@1| |f|o|u|r| @49
-|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @46
+@3|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @43
 |f+0&#ffffff0|i|v|e| |s|i|x| @51
 |~+0#4040ff13&| @58
 |~| @58

src/testdir/dumps/Test_prop_with_text_above_4.dump

@@ -0,0 +1,9 @@
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@1|1| |f+0#0000000#ffff4012|i|r|s|t| |t|h|i|n|g| |a|b|o|v|e| @36
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@3|s+0#0000000#ffd7ff255|e|c|o|n|d| |t|h|i|n|g| |a|b|o|v|e| @35
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@3|i+0#0000000&|n|s|e|r|t|e|d> |o|n|e| |t|w|o| @37
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@1|2| |t+0#0000000&|h|r|e@1| |f|o|u|r| @43
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@1|3| | +0#0000000&@2|a+0&#ffff4012|n|o|t|h|e|r| |t|h|i|n|g| @37
+| +0#0000e05#a8a8a8255@1| +0#af5f00255#ffffff0@3|f+0#0000000&|i|v|e| |s|i|x| @45
+|~+0#4040ff13&| @58
+|~| @58
+| +0#0000000&@41|1|,|9|-|1@1|7| @6|A|l@1| 

src/testdir/test_textprop.vim

@@ -2857,7 +2857,7 @@ func Test_props_with_text_above()
       call prop_type_add('above2', #{highlight: 'DiffChange'})
       call prop_add(1, 0, #{type: 'above1', text: 'first thing above', text_align: 'above'})
       call prop_add(1, 0, #{type: 'above2', text: 'second thing above', text_align: 'above'})
-      call prop_add(3, 0, #{type: 'above1', text: 'another thing', text_align: 'above'})
+      call prop_add(3, 0, #{type: 'above1', text: 'another thing', text_align: 'above', text_padding_left: 3})
 
       normal gglllj
   END
@@ -2870,6 +2870,9 @@ func Test_props_with_text_above()
   call term_sendkeys(buf, "inserted \<Esc>")
   call VerifyScreenDump(buf, 'Test_prop_with_text_above_3', {})
 
+  call term_sendkeys(buf, ":set number signcolumn=yes\<CR>")
+  call VerifyScreenDump(buf, 'Test_prop_with_text_above_4', {})
+
   call StopVimInTerminal(buf)
 endfunc
 

src/version.c

@@ -703,6 +703,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    442,
 /**/
     441,
 /**/