vis: restructure register handling

Decouple register content from cursors. Previously each cursor had
exactly one corresponding register. Now each register can save a
list of values whose lifetime is not tied to the cursor.

If multiple cursors exist and a put with a register holding only
a single value is performed, then this value is inserted at every
cursor location. If there are fewer values available than cursors,
then only the matching ones will be used. If a register holding
multiple values is inserted in a single cursor context, only the
first value will be used. Another option would be to join all
existing values. The details of this behavior might be changed
in the future.

<C-r> in insert mode has not yet been adapted and register handling
in general needs to be cleaned up further.

Fix #527

1 files changed, 0 insertions, 2 deletions

diff --git a/view.h b/view.h
index c382505..262c581 100644
--- a/view.h
+++ b/view.h
@@ -160,8 +160,6 @@ void view_cursors_to(Cursor*, size_t pos);
 void view_cursors_scroll_to(Cursor*, size_t pos);
 /* place cursor on given (line, column) pair, both values are 1-based */
 void view_cursors_place(Cursor*, size_t line, size_t col);
-/* get register associated with this register */
-Register *view_cursors_register(Cursor*);
 /* start selected area at current cursor position. further cursor movements
  * will affect the selected region. */
 void view_cursors_selection_start(Cursor*);