Refactor SelectionList::insert a bit

src/normal.cc

@@ -594,21 +594,22 @@ void paste_all(Context& context, NormalParams params)
         offsets.push_back(all.length());
     }
 
+    Vector<BufferCoord> insert_pos;
     auto& selections = context.selections();
     {
         ScopedEdition edition(context);
-        selections.insert(all, effective_mode, true);
+        selections.insert(all, effective_mode, &insert_pos);
     }
 
     const Buffer& buffer = context.buffer();
     Vector<Selection> result;
-    for (auto& selection : selections)
+    for (auto& ins_pos : insert_pos)
     {
         ByteCount pos = 0;
         for (auto offset : offsets)
         {
-            result.push_back({ buffer.advance(selection.min(), pos),
+            result.push_back({ buffer.advance(ins_pos, pos),
-                               buffer.advance(selection.min(), offset-1) });
+                               buffer.advance(ins_pos, offset-1) });
             pos = offset;
         }
     }

src/selection.cc

@@ -513,7 +513,7 @@ BufferCoord prepare_insert(Buffer& buffer, const Selection& sel, InsertMode mode
 }
 
 void SelectionList::insert(ConstArrayView<String> strings, InsertMode mode,
-                           bool select_inserted)
+                           Vector<BufferCoord>* out_insert_pos)
 {
     if (strings.empty())
         return;
@@ -525,43 +525,39 @@ void SelectionList::insert(ConstArrayView<String> strings, InsertMode mode,
         auto& sel = m_selections[index];
 
         sel.anchor() = changes_tracker.get_new_coord(sel.anchor());
-        kak_assert(m_buffer->is_valid(sel.anchor()));
         sel.cursor() = changes_tracker.get_new_coord(sel.cursor());
-        kak_assert(m_buffer->is_valid(sel.cursor()));
+        kak_assert(m_buffer->is_valid(sel.anchor()) and
-
+                   m_buffer->is_valid(sel.cursor()));
-        auto pos = prepare_insert(*m_buffer, sel, mode);
-        changes_tracker.update(*m_buffer, m_timestamp);
 
         const String& str = strings[std::min(index, strings.size()-1)];
 
-        if (mode == InsertMode::Replace)
+        const auto pos = (mode == InsertMode::Replace) ?
-            pos = replace(*m_buffer, sel, str);
+            replace(*m_buffer, sel, str)
-        else
+          : m_buffer->insert(prepare_insert(*m_buffer, sel, mode), str);
-            pos = m_buffer->insert(pos, str);
+
+        if (out_insert_pos)
+            out_insert_pos->push_back(pos);
 
-        auto& change = m_buffer->changes_since(m_timestamp).back();
         changes_tracker.update(*m_buffer, m_timestamp);
         m_timestamp = m_buffer->timestamp();
 
-        if (select_inserted or mode == InsertMode::Replace)
+        if (mode == InsertMode::Replace)
         {
             if (str.empty())
-            {
                 sel.anchor() = sel.cursor() = m_buffer->clamp(pos);
-                continue;
+            else
+            {
+                // we want min and max from *before* we do any change
+                auto& min = sel.min();
+                auto& max = sel.max();
+                auto& change = m_buffer->changes_since(0).back();
+                min = change.begin;
+                max = m_buffer->char_prev(change.end);
             }
-
-            // we want min and max from *before* we do any change
-            auto& min = sel.min();
-            auto& max = sel.max();
-            min = change.begin;
-            max = m_buffer->char_prev(change.end);
         }
-        else
+        else if (not str.empty())
         {
-            if (str.empty())
+            auto& change = m_buffer->changes_since(0).back();
-                continue;
-
             sel.anchor() = m_buffer->clamp(update_insert(sel.anchor(), change.begin, change.end));
             sel.cursor() = m_buffer->clamp(update_insert(sel.cursor(), change.begin, change.end));
         }

src/selection.hh

@@ -135,7 +135,7 @@ struct SelectionList
     void update_timestamp() { m_timestamp = m_buffer->timestamp(); }
 
     void insert(ConstArrayView<String> strings, InsertMode mode,
-                bool select_inserted = false);
+                Vector<BufferCoord>* out_insert_pos = nullptr);
     void erase();
 
 private: