(x_produce_glyphs): Calculate tab width by

FRAME_SPACE_WIDTH, not FRAME_COLUMN_WIDTH.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index d2f6b2234c7..faa0dfc2123 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -19163,14 +19163,14 @@ x_produce_glyphs (it)
         }
       else if (it->char_to_display == '\t')
         {
-          int tab_width = it->tab_width * FRAME_COLUMN_WIDTH (it->f);
+          int tab_width = it->tab_width * FRAME_SPACE_WIDTH (it->f);
           int x = it->current_x + it->continuation_lines_width;
           int next_tab_x = ((1 + x + tab_width - 1) / tab_width) * tab_width;
 
           /* If the distance from the current position to the next tab
-             stop is less than a canonical character width, use the
+             stop is less than a space character width, use the
              tab stop after that.  */
-          if (next_tab_x - x < FRAME_COLUMN_WIDTH (it->f))
+          if (next_tab_x - x < FRAME_SPACE_WIDTH (it->f))
             next_tab_x += tab_width;
 
           it->pixel_width = next_tab_x - x;