(display_line): Set charpos of first glyph in blank

lines not corresponding to any text to -1, even if no glyphs are
filled in in that line.

2 files changed, 11 insertions, 5 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 5f081f9858c..2e00d388404 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+1999-11-02  Gerd Moellmann  <gerd@gnu.org>
+
+        * xdisp.c (display_line): Set charpos of first glyph in blank
+        lines not corresponding to any text to -1, even if no glyphs are
+        filled in in that line.
+
 1999-11-01  Gerd Moellmann  <gerd@gnu.org>
 
         * xfns.c (png_load) [PNG_READ_sRGB_SUPPORTED]: Put code using 
diff --git a/src/xdisp.c b/src/xdisp.c
index 1c2e22e7a53..7364171f00f 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -11009,12 +11009,12 @@ display_line (it)
       if (!get_next_display_element (it))
         {
           /* Maybe add a space at the end of this line that is used to
-             display the cursor there under X.  */
-          if (append_space (it, 1) && row->used[TEXT_AREA] == 1)
+             display the cursor there under X.  Set the charpos of the
+             first glyph of blank lines not corresponding to any text
+             to -1.  */
+          if ((append_space (it, 1) && row->used[TEXT_AREA] == 1)
+              || row->used[TEXT_AREA] == 0)
             {
-              /* The position -1 below indicates a blank line not
-                 corresponding to any text, as opposed to an empty line
-                 corresponding to a line end.  */
               row->glyphs[TEXT_AREA]->charpos = -1;
               row->displays_text_p = 0;