patch 8.1.1717: last char in menu popup window highlighted

Problem:    Last char in menu popup window highlighted.
Solution:   Do not highlight an extra character twice.

src/screen.c

@@ -3219,10 +3219,10 @@ win_line(
     int		syntax_attr = 0;	/* attributes desired by syntax */
     int		has_syntax = FALSE;	/* this buffer has syntax highl. */
     int		save_did_emsg;
-    int		eol_hl_off = 0;		/* 1 if highlighted char after EOL */
     int		draw_color_col = FALSE;	/* highlight colorcolumn */
     int		*color_cols = NULL;	/* pointer to according columns array */
 #endif
+    int		eol_hl_off = 0;		/* 1 if highlighted char after EOL */
 #ifdef FEAT_TEXT_PROP
     int		text_prop_count;
     int		text_prop_next = 0;	// next text property to use
@@ -5557,11 +5557,11 @@ win_line(
 	/*
 	 * At end of the text line or just after the last character.
 	 */
-	if (c == NUL
+	if ((c == NUL
 #if defined(LINE_ATTR)
 		|| did_line_attr == 1
 #endif
-		)
+		) && eol_hl_off == 0)
 	{
 #ifdef FEAT_SEARCH_EXTRA
 	    long prevcol = (long)(ptr - line) - (c == NUL);
@@ -5687,9 +5687,7 @@ win_line(
 		    ++off;
 		}
 		++vcol;
-#ifdef FEAT_SYN_HL
 		eol_hl_off = 1;
-#endif
 	    }
 	}
 

src/testdir/dumps/Test_popupwin_menu_04.dump

@@ -0,0 +1,10 @@
+>1+0&#ffffff0| @73
+|2| @73
+|3| @31|╔+0#0000001#ffd7ff255|═@6|╗| +0#0000000#ffffff0@32
+|4| @31|║+0#0000001#ffd7ff255| |o+0#0000000#40ff4011|n|e| +0#0000001#ffd7ff255@2|║| +0#0000000#ffffff0@32
+|5| @31|║+0#0000001#ffd7ff255| |t|w|o| @2|║| +0#0000000#ffffff0@32
+|6| @31|║+0#0000001#ffd7ff255| |t|h|r|e@1| |║| +0#0000000#ffffff0@32
+|7| @31|╚+0#0000001#ffd7ff255|═@6|╝| +0#0000000#ffffff0@32
+|8| @73
+|9| @73
+@57|1|,|1| @10|T|o|p| 

src/testdir/test_popupwin.vim

@@ -1215,6 +1215,29 @@ func Test_popup_menu_screenshot()
   call delete('XtestPopupMenu')
 endfunc
 
+func Test_popup_menu_narrow()
+  if !CanRunVimInTerminal()
+    throw 'Skipped: cannot make screendumps'
+  endif
+
+  let lines =<< trim END
+	call setline(1, range(1, 20))
+	hi PopupSelected ctermbg=green
+	call popup_menu(['one', 'two', 'three'], #{callback: 'MenuDone'})
+	func MenuDone(id, res)
+	  echomsg "selected " .. a:res
+	endfunc
+  END
+  call writefile(lines, 'XtestPopupNarrowMenu')
+  let buf = RunVimInTerminal('-S XtestPopupNarrowMenu', #{rows: 10})
+  call VerifyScreenDump(buf, 'Test_popupwin_menu_04', {})
+
+  " clean up
+  call term_sendkeys(buf, "x")
+  call StopVimInTerminal(buf)
+  call delete('XtestPopupNarrowMenu')
+endfunc
+
 func Test_popup_title()
   if !CanRunVimInTerminal()
     throw 'Skipped: cannot make screendumps'
@@ -2093,4 +2116,50 @@ func Test_popup_cursorline()
   call delete('XtestPopupCursorLine')
 endfunc
 
+func Test_previewpopup()
+  if !CanRunVimInTerminal()
+    throw 'Skipped: cannot make screendumps'
+  endif
+  call writefile([
+        \ "!_TAG_FILE_ENCODING\tutf-8\t//",
+        \ "another\tXtagfile\t/^this is another",
+        \ "theword\tXtagfile\t/^theword"],
+        \ 'Xtags')
+  call writefile(range(1,20)
+        \ + ['theword is here']
+        \ + range(22, 27)
+        \ + ['this is another place']
+        \ + range(29, 40),
+        \ "Xtagfile")
+  let lines =<< trim END
+        set tags=Xtags
+	call setline(1, [
+              \ 'one',
+              \ 'two',
+              \ 'three',
+              \ 'four',
+              \ 'five',
+              \ 'six',
+              \ 'seven',
+              \ 'find theword somewhere',
+              \ 'nine',
+              \ 'this is another word'])
+        set previewpopup=height:4,width:40
+  END
+  call writefile(lines, 'XtestPreviewPopup')
+  let buf = RunVimInTerminal('-S XtestPreviewPopup', #{rows: 14})
+
+  call term_sendkeys(buf, "/theword\<CR>\<C-W>}")
+  call term_sendkeys(buf, ":\<CR>")
+  call VerifyScreenDump(buf, 'Test_popupwin_previewpopup_1', {})
+
+  call term_sendkeys(buf, "/another\<CR>\<C-W>}")
+  call VerifyScreenDump(buf, 'Test_popupwin_previewpopup_2', {})
+
+  call StopVimInTerminal(buf)
+  call delete('Xtags')
+  call delete('Xtagfile')
+  call delete('XtestPreviewPopup')
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1717,
 /**/
     1716,
 /**/