Fix display of thin lines whose newline has line-height property of t

* src/xdisp.c (append_space_for_newline): Don't try to fix ascent
and descent values of non-empty glyph rows, since they could have
forced low values deliberately.  (Bug#21243)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 7371216d387..9b761746252 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -19229,7 +19229,7 @@ append_space_for_newline (struct it *it, bool default_face_p)
              funny, and height of empty lines will be incorrect.  */
           g = it->glyph_row->glyphs[TEXT_AREA] + n;
           struct font *font = face->font ? face->font : FRAME_FONT (it->f);
-          if (n == 0 || it->glyph_row->height < font->pixel_size)
+          if (n == 0)
             {
               Lisp_Object height, total_height;
               int extra_line_spacing = it->extra_line_spacing;