patch 9.1.1162: completion popup not cleared in cmdline

Problem:  When an info popup spans into the cmdline area and ESC is
          pressed, some content remains visible on screen (yu3s)
Solution: Add popup_overlays_cmdline() check in screen_fill() to prevent
          prematurely clearing the clear_cmdline flag (glepnir).

fixes: #15627
closes: #16765

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/popupwin.c

@@ -40,6 +40,8 @@ static int  message_win_time = 3000;
 // hit-enter prompt.
 static int    start_message_win_timer = FALSE;
 
+static int popup_on_cmdline = FALSE;
+
 static void may_start_message_win_timer(win_T *wp);
 #endif
 
@@ -4564,7 +4566,19 @@ popup_hide_info(void)
     win_T *wp = popup_find_info_window();
 
     if (wp != NULL)
+    {
+	popup_on_cmdline = wp->w_popup_flags & POPF_ON_CMDLINE;
 	popup_hide(wp);
+    }
+}
+
+/*
+ * Returns TRUE if a popup extends into the cmdline area.
+ */
+    int
+popup_overlaps_cmdline(void)
+{
+    return popup_on_cmdline;
 }
 
 /*

src/proto/popupwin.pro

@@ -74,4 +74,6 @@ void end_echowindow(void);
 int popup_win_closed(win_T *win);
 void popup_set_title(win_T *wp);
 void popup_update_preview_title(void);
+int popup_overlaps_cmdline(void);
+
 /* vim: set ft=c : */

src/screen.c

@@ -2327,7 +2327,11 @@ screen_fill(
 	{
 	    redraw_cmdline = TRUE;
 	    if (start_col == 0 && end_col == Columns
-		    && c1 == ' ' && c2 == ' ' && attr == 0)
+		    && c1 == ' ' && c2 == ' ' && attr == 0
+#ifdef FEAT_PROP_POPUP
+		    && !popup_overlaps_cmdline()
+#endif
+		    )
 		clear_cmdline = FALSE;	// command line has been cleared
 	    if (start_col == 0)
 		mode_displayed = FALSE; // mode cleared or overwritten

src/testdir/dumps/Test_info_popupwin_clears_cmdline_on_hide_01.dump

@@ -0,0 +1,15 @@
+|f+0&#ffffff0|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|o+0#0000001#ffd7ff255|n|e| @11| +0#0000000#ffffff0@59
+|t+0#0000001#ffd7ff255|w|o| @11| +0#0000000#ffffff0@59
+|t+0#0000001#ffd7ff255|h|r|e@1| @9| +0#0000000#ffffff0@59
+|f+0#0000001#ffd7ff255|o|u|r| @10| +0#0000000#ffffff0@59
+|f+0#0000001#e0e0e08|i|v|e| @11|o|n|e| @2| +0#0000000#ffffff0@52
+|f|i|v|e> @10| +0#0000001#e0e0e08|t|w|o| @2| +0#0000000#ffffff0@52
+|-+2&&@1| |I|N|S|E|R|T| |-@1| +0&&@2| +0#0000001#e0e0e08|t|h|r|e@1| | +0#0000000#ffffff0@34|1|6|,|1| @9|B|o|t| 

src/testdir/dumps/Test_info_popupwin_clears_cmdline_on_hide_02.dump

@@ -0,0 +1,15 @@
+|f+0&#ffffff0|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|o@1|b|a|r| @68
+|f|i|v>e| @70
+@57|1|6|,|4| @9|B|o|t| 

src/testdir/test_popupwin.vim

@@ -4404,6 +4404,31 @@ func Test_popupwin_clears_cmdline_on_hide()
 
   " clean up
   call StopVimInTerminal(buf)
+
+  let lines =<< trim END
+    set completeopt=menuone,noinsert,noselect,popup,fuzzy
+    set completepopup=border:off
+    let g:list = [
+      \ {"word": "one", "info": "one\ntwo\nthree\nfour\nfive"},
+      \ {"word": "two", "info": "one\ntwo\nthree\nfour\nfive"},
+      \ {"word": "three", "info": "one\ntwo\nthree\nfour\nfive"},
+      \ {"word": "four", "info": "one\ntwo\nthree\nfour\nfive"},
+      \ {"word": "five", "info": "one\ntwo\nthree\nfour\nfive"}
+      \ ]
+    call setline(1, repeat(['foobar'], &lines))
+    inoremap <f5> <cmd>call complete(1, g:list)<cr>
+  END
+  call writefile(lines, 'XtestPopup_win3', 'D')
+  let buf = RunVimInTerminal('-S XtestPopup_win3', #{rows: 15})
+  call term_sendkeys(buf, "Go\<F5>\<C-N>\<C-N>\<C-N>\<C-N>\<C-N>")
+  call term_wait(buf, 100)
+  call VerifyScreenDump(buf, 'Test_info_popupwin_clears_cmdline_on_hide_01', {})
+
+  call term_sendkeys(buf, "\<Esc>")
+  call term_wait(buf, 500)
+  call VerifyScreenDump(buf, 'Test_info_popupwin_clears_cmdline_on_hide_02', {})
+
+  call StopVimInTerminal(buf)
 endfunc
 
 " vim: shiftwidth=2 sts=2

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1162,
 /**/
     1161,
 /**/