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, 3 insertions, 0 deletions

diff --git a/vis-core.h b/vis-core.h
index 654085d..b0caee1 100644
--- a/vis-core.h
+++ b/vis-core.h
@@ -10,6 +10,7 @@
 #include "map.h"
 #include "ring-buffer.h"
 #include "array.h"
+#include "buffer.h"
 
 /* a mode contains a set of key bindings which are currently valid.
  *
@@ -40,6 +41,7 @@ struct Mode {
 struct OperatorContext {
 	int count;        /* how many times should the command be executed? */
 	Register *reg;    /* always non-NULL, set to a default register */
+	size_t reg_slot;  /* register slot to use */
 	Filerange range;  /* which part of the file should be affected by the operator */
 	size_t pos;       /* at which byte from the start of the file should the operation start? */
 	size_t newpos;    /* new position after motion or EPOS if none given */
@@ -248,6 +250,7 @@ void action_reset(Action*);
 size_t vis_text_insert_nl(Vis*, Text*, size_t pos);
 
 void mode_set(Vis *vis, Mode *new_mode);
+Macro *macro_get(Vis *vis, enum VisRegister);
 
 void window_selection_save(Win *win);
 Win *window_new_file(Vis*, File*, enum UiOption);