vis: add per cursor registers

3 files changed, 17 insertions, 2 deletions

diff --git a/view.c b/view.c
index 875635f..43915ce 100644
--- a/view.c
+++ b/view.c
@@ -41,6 +41,7 @@ struct Cursor {             /* cursor position */
 	Line *line;         /* screen line on which cursor currently resides */
 	Mark mark;          /* mark used to keep track of current cursor position */
 	Selection *sel;     /* selection (if any) which folows the cursor upon movement */
+	Register reg;       /* per cursor register to support yank/put operation */
 	View *view;         /* associated view to which this cursor belongs */
 	Cursor *prev, *next;/* previous/next cursors in no particular order */
 };
@@ -892,6 +893,7 @@ Cursor *view_cursors_new(View *view) {
 void view_cursors_free(Cursor *c) {
 	if (!c)
 		return;
+	register_release(&c->reg);
 	if (c->prev)
 		c->prev->next = c->next;
 	if (c->next)
@@ -923,6 +925,10 @@ size_t view_cursors_pos(Cursor *c) {
 	return text_mark_get(c->view->text, c->mark);
 }
 
+Register *view_cursors_register(Cursor *c) {
+	return &c->reg;
+}
+
 void view_cursors_scroll_to(Cursor *c, size_t pos) {
 	View *view = c->view;
 	if (view->cursor == c) {
diff --git a/view.h b/view.h
index ce2dc93..97fd12c 100644
--- a/view.h
+++ b/view.h
@@ -3,6 +3,7 @@
 
 #include <stddef.h>
 #include <stdbool.h>
+#include "register.h"
 #include "text.h"
 #include "ui.h"
 #include "syntax.h"
@@ -130,6 +131,8 @@ size_t view_cursors_pos(Cursor*);
 /* place cursor at `pos' which should be in the interval [0, text-size] */
 void view_cursors_to(Cursor*, size_t pos);
 void view_cursors_scroll_to(Cursor*, size_t pos);
+/* 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*);
diff --git a/vis.c b/vis.c
index 9ca92cd..d11c696 100644
--- a/vis.c
+++ b/vis.c
@@ -1227,16 +1227,22 @@ static void action_do(Action *a) {
 	Text *txt = vis->win->file->text;
 	View *view = vis->win->view;
 	int count = MAX(1, a->count);
+	Cursor *cursor = view_cursors(view), *next;
+	bool multiple_cursors = cursor && view_cursors_next(cursor);
 
-	for (Cursor *cursor = view_cursors(view), *next; cursor; cursor = next) {
+	for (; cursor; cursor = next) {
 
 		next = view_cursors_next(cursor);
 		size_t pos = view_cursors_pos(cursor);
+		Register *reg = a->reg ? a->reg : &vis->registers[REG_DEFAULT];
+		if (multiple_cursors)
+			reg = view_cursors_register(cursor);
+
 		OperatorContext c = {
 			.count = a->count,
 			.pos = pos,
 			.range = text_range_empty(),
-			.reg = a->reg ? a->reg : &vis->registers[REG_DEFAULT],
+			.reg = reg,
 			.linewise = a->linewise,
 			.arg = &a->arg,
 		};