Improve column highlighter to cooperate better with other highlighters

Fixes #268

1 files changed, 13 insertions, 0 deletions

diff --git a/src/display_buffer.cc b/src/display_buffer.cc
index 55772b6b..8cda0c47 100644
--- a/src/display_buffer.cc
+++ b/src/display_buffer.cc
@@ -94,6 +94,19 @@ DisplayLine::iterator DisplayLine::split(iterator it, ByteCoord pos)
     return m_atoms.insert(it, std::move(atom));
 }
 
+DisplayLine::iterator DisplayLine::split(iterator it, CharCount pos)
+{
+    kak_assert(it->type() == DisplayAtom::Text);
+    kak_assert(pos > 0);
+    kak_assert(pos < it->length());
+
+    DisplayAtom atom(it->m_text.substr(0, pos).str());
+    it->m_text = it->m_text.substr(pos).str();
+    atom.check_invariant();
+    it->check_invariant();
+    return m_atoms.insert(it, std::move(atom));
+}
+
 DisplayLine::iterator DisplayLine::insert(iterator it, DisplayAtom atom)
 {
     if (atom.has_buffer_range())