From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 14 Nov 2020 11:56:12 +0000 (+0200)
Subject: Fix display of truncated R2L lines on TTY frames
X-Git-Tag: emacs-27.1.90~59
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=5aabf2cc7f90a168fda694c6c5360f1df398255c;p=emacs.git

Fix display of truncated R2L lines on TTY frames

* src/xdisp.c (extend_face_to_end_of_line): Use a while-loop, not
a do-while loop, to avoid appending an extra glyph at the end of a
line that is one character shorter than the window-width.  This is
needed to fix display of reversed glyph rows that are almost as
wide as the window, because append_space_for_newline already added
one space glyph.
---

diff --git a/src/xdisp.c b/src/xdisp.c
index 681df093418..c9175a68a02 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -22082,7 +22082,7 @@ extend_face_to_end_of_line (struct it *it)
 	 updating current_x.  */
       it->current_x = it->glyph_row->used[TEXT_AREA];
 
-      do
+      while (it->current_x <= it->last_visible_x)
 	{
 	  if (it->current_x != indicator_column)
 	    PRODUCE_GLYPHS (it);
@@ -22100,7 +22100,6 @@ extend_face_to_end_of_line (struct it *it)
 	      it->c = it->char_to_display = ' ';
 	    }
 	}
-      while (it->current_x <= it->last_visible_x);
 
       if (WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0
 	  && (it->glyph_row->used[RIGHT_MARGIN_AREA]