[vte/wip/egmont/bidi: 103/105] ED

[Egmont Koblinger <egmontkob src gnome org>]

commit 052efe6fa475fb4247c102e61bf3e73158175625
Author: Egmont Koblinger <egmont gmail com>
Date:   Sat Jan 26 16:32:36 2019 +0100

    ED

 src/vteseq.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/src/vteseq.cc b/src/vteseq.cc
index e8404699..094e03ac 100644
--- a/src/vteseq.cc
+++ b/src/vteseq.cc
@@ -328,6 +328,12 @@ Terminal::clear_current_line()
 void
 Terminal::clear_above_current()
 {
+        /* Make the preceding line hard wrapped, even if it's just scrolled out, as per the BiDi spec. */
+        if (m_screen->insert_delta > _vte_ring_delta(m_screen->row_data)) {
+                auto rowdata = _vte_ring_index_writable(m_screen->row_data, m_screen->insert_delta - 1);
+                rowdata->attr.soft_wrapped = 0;
+                invalidate_row(m_screen->insert_delta - 1);  // FIXME
+        }
        /* If the cursor is actually on the screen, clear data in the row
         * which corresponds to the cursor. */
         for (auto i = m_screen->insert_delta; i < m_screen->cursor.row; i++) {
@@ -755,7 +761,8 @@ Terminal::clear_below_current()
                         _vte_row_data_fill(rowdata, &m_fill_defaults, m_column_count);
                }
                rowdata->attr.soft_wrapped = 0;
-                rowdata->attr.bidi_flags = get_bidi_flags();
+               if (i > m_screen->cursor.row)
+                        rowdata->attr.bidi_flags = get_bidi_flags();
                /* Repaint this row. */
                 invalidate_row(i);
        }