patch 9.0.0199: cursor position wrong with two right-aligned virtual texts

Problem:    Cursor position wrong with two right-aligned virtual texts.
Solution:   Add the padding for right-alignment. (issue #10906)

src/charset.c

@@ -1181,6 +1181,7 @@ win_lbr_chartabsize(
 		    if (tp->tp_col == MAXCOL)
 		    {
 			int below = (tp->tp_flags & TP_FLAG_ALIGN_BELOW);
+			int right = (tp->tp_flags & TP_FLAG_ALIGN_RIGHT);
 			int wrap = (tp->tp_flags & TP_FLAG_WRAP);
 			int len = (int)STRLEN(p);
 			int n_used = len;
@@ -1193,10 +1194,19 @@ win_lbr_chartabsize(
 			    cells = textprop_size_after_trunc(wp,
 						     below, added, p, &n_used);
 			}
-			// right-aligned does not really matter here, same as
-			// "after"
 			if (below)
 			    cells += wp->w_width - (vcol + size) % wp->w_width;
+			else if (right)
+			{
+			    len = wp->w_width - vcol % wp->w_width;
+			    if (len > cells + size)
+				// add the padding for right-alignment
+				cells = len - size;
+			    else if (len == 0)
+				// padding to right-align in the next line
+				cells += cells > wp->w_width ? 0
+							  :wp->w_width - cells;
+			}
 #ifdef FEAT_LINEBREAK
 			no_sbr = TRUE;  // don't use 'showbreak' now
 #endif

src/testdir/dumps/Test_prop_right_align_twice_1.dump

@@ -0,0 +1,8 @@
+|s+0&#ffffff0|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| +0&#ffd7ff255|n|o|t|h|i|n|g| |h|e|r|e| +0&#ffffff0@12|S+0#ffffff16#e000002|o|m|e| |e|r@1|o|r
+| +0#0000000#ffffff0@61|A+0#ffffff16#e000002|n|o|t|h|e|r| |e|r@1|o|r
+|l+0#0000000#ffffff0|i|n|e| |t|w>o| @66
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|2|,|8| @10|A|l@1| 

src/testdir/dumps/Test_prop_right_align_twice_2.dump

@@ -0,0 +1,8 @@
+|s+0&#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t|s|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| |s|o|m|e| |t|e|x|t| +0&#ffd7ff255|n|o|t|h|i|n|g| |h|e|r|e|S+0#ffffff16#e000002|o|m|e| |e|r@1|o
+|r| +0#0000000#ffffff0@60|A+0#ffffff16#e000002|n|o|t|h|e|r| |e|r@1|o|r
+|l+0#0000000#ffffff0|i|n|e| |t|w>o| @66
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|2|,|8| @10|A|l@1| 

src/testdir/test_textprop.vim

@@ -2538,6 +2538,29 @@ func Test_prop_inserts_text_highlight()
   call delete('XscriptPropsWithHighlight')
 endfunc
 
+func Test_props_with_text_right_align_twice()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+      call setline(1, ["some text some text some text some text", 'line two'])
+      call prop_type_add( 'MyErrorText', #{ highlight: 'ErrorMsg' } )
+      call prop_type_add( 'MyPadding', #{ highlight: 'DiffChange' } )
+      call prop_add( 1, 0, #{ type: 'MyPadding', text: ' nothing here', text_wrap: 'wrap'} )
+      call prop_add( 1, 0, #{ type: 'MyErrorText', text: 'Some error', text_wrap: 'wrap', text_align: 'right' } )
+      call prop_add( 1, 0, #{ type: 'MyErrorText', text: 'Another error', text_wrap: 'wrap', text_align: 'right' } )
+      normal G$
+  END
+  call writefile(lines, 'XscriptPropsRightAlign')
+  let buf = RunVimInTerminal('-S XscriptPropsRightAlign', #{rows: 8})
+  call VerifyScreenDump(buf, 'Test_prop_right_align_twice_1', {})
+
+  call term_sendkeys(buf, "ggisome more text\<Esc>G$")
+  call VerifyScreenDump(buf, 'Test_prop_right_align_twice_2', {})
+
+  call StopVimInTerminal(buf)
+  call delete('XscriptPropsRightAlign')
+endfunc
+
 func Test_props_with_text_after()
   CheckRunVimInTerminal
 

src/version.c

@@ -735,6 +735,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    199,
 /**/
     198,
 /**/