(set_cursor_from_row): If cursor cannot be set in row,

don't update w->cursor and return 0.  Return 1 on success.
(try_cursor_movement): Repeat set_cursor_from_row on successive rows
until it succeeds.

diff --git a/src/xdisp.c b/src/xdisp.c
index 6ebc64bf9f5c099c3f1f8ae89482342617523231..aa0625532ab70a43088516ba5c86d2901358f62e 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -11620,9 +11620,11 @@ redisplay_window_1 (window)
 
 /* Set cursor position of W.  PT is assumed to be displayed in ROW.
    DELTA is the number of bytes by which positions recorded in ROW
-   differ from current buffer positions.  */
+   differ from current buffer positions.
 
-void
+   Return 0 if cursor is not on this row.  1 otherwise.  */
+
+int
 set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
      struct window *w;
      struct glyph_row *row;
@@ -11772,6 +11774,11 @@ set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
              SKIP_GLYPHS (glyph, end, x, EQ (glyph->object, string));
            }
        }
+
+      /* If we reached the end of the line, and end was from a string,
+        cursor is not on this line.  */
+      if (glyph == end)
+       return 0;
     }
 
   w->cursor.hpos = glyph - row->glyphs[TEXT_AREA];
@@ -11805,6 +11812,8 @@ set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
       else
        CHARPOS (this_line_start_pos) = 0;
     }
+
+  return 1;
 }
 
 
@@ -12488,8 +12497,18 @@ try_cursor_movement (window, startp, scroll_step)
            rc = CURSOR_MOVEMENT_MUST_SCROLL;
          else
            {
-             set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
-             rc = CURSOR_MOVEMENT_SUCCESS;
+             do
+               {
+                 if (set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0))
+                   {
+                     rc = CURSOR_MOVEMENT_SUCCESS;
+                     break;
+                   }
+                 ++row;
+               }
+             while (MATRIX_ROW_BOTTOM_Y (row) < last_y
+                    && MATRIX_ROW_START_CHARPOS (row) == PT
+                    && cursor_row_p (w, row));
            }
        }
     }