From: Eli Zaretskii <eliz@gnu.org>
Date: Tue, 22 Sep 2020 13:52:18 +0000 (+0300)
Subject: Fix cursor display in mini-window under icomplete-mode
X-Git-Tag: emacs-28.0.90~5935
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=de6844b62468258b3dc89ba40fc63480dc4d854c;p=emacs.git

Fix cursor display in mini-window under icomplete-mode

* src/xdisp.c (resize_mini_window): When we show only part of the
mini-window's contents, make sure the window-start position is at
the beginning of a screen line.  (Bug#43519)
---

diff --git a/src/xdisp.c b/src/xdisp.c
index ac5307f4acc..8fadff972f0 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -11809,6 +11809,16 @@ resize_mini_window (struct window *w, bool exact_p)
 	  height = (max_height / unit) * unit;
 	  init_iterator (&it, w, ZV, ZV_BYTE, NULL, DEFAULT_FACE_ID);
 	  move_it_vertically_backward (&it, height - unit);
+	  /* The following move is usually a no-op when the stuff
+	     displayed in the mini-window comes entirely from buffer
+	     text, but it is needed when some of it comes from overlay
+	     strings, especially when there's an after-string at ZV.
+	     This happens with some completion packages, like
+	     icomplete, ido-vertical, etc.  With those packages, if we
+	     don't force w->start to be at the beginning of a screen
+	     line, important parts of the stuff in the mini-window,
+	     such as user prompt, will be hidden from view.  */
+	  move_it_by_lines (&it, 0);
 	  start = it.current.pos;
 	}
       else