(x_draw_glyph_string): Fix calculation of underline

position.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/w32term.c b/src/w32term.c
index 5f5a3f954a9..0fbbf370fa2 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -2891,7 +2891,7 @@ x_draw_glyph_string (s)
               else
                 thickness = 1;
               if (x_underline_at_descent_line)
-                position = (s->height - thickness) - s->ybase;
+                position = (s->height - thickness) - (s->ybase - s->y);
               else
                 {
                 /* Get the underline position.  This is the recommended
@@ -2912,7 +2912,7 @@ x_draw_glyph_string (s)
           /* Check the sanity of thickness and position.  We should
              avoid drawing underline out of the current line area.  */
           if (s->y + s->height <= s->ybase + position)
-            position = s->y + s->height - 1;
+            position = (s->height - 1) - (s->ybase - s->y);
           if (s->y + s->height < s->ybase + position + thickness)
             thickness = (s->y + s->height) - (s->ybase + position);
           s->underline_thickness = thickness;