Add support for copy/paste registers

This adds support for vim-style copy/paste registers which allows
cutting and copying multiple items without having to overwrite the
copy/paste buffer. Registers can be specified using the quote key ('"').
To access a register, type '"x' before a command where "x" is the name
of a register. If you want to copy the currently selected item into
register 1, type '"1c'.

Valid registers are 0-9, a-z, "-" and "_". Note that the latter is the
so-called black hole register, which works similar to the black hole
register in vim.

The register prefix key is currently hardcoded and cannot be configured.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

1 files changed, 8 insertions, 5 deletions

diff --git a/src/calcurse.h b/src/calcurse.h
index 8674321..c9b0307 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -160,6 +160,9 @@
 #define KEYS_LABELEN        8   /* length of command description */
 #define KEYS_CMDS_PER_LINE  6   /* max number of commands per line */
 
+/* Register definitions. */
+#define REG_BLACK_HOLE 37
+
 /* Size of the hash table the note garbage collector uses. */
 #define NOTE_GC_HSIZE 1024
 
@@ -722,10 +725,10 @@ void interact_day_item_delete(unsigned *, unsigned *);
 void interact_day_item_edit(void);
 void interact_day_item_pipe(void);
 void interact_day_item_repeat(void);
-void interact_day_item_cut_free();
-void interact_day_item_cut(unsigned *, unsigned *);
-void interact_day_item_copy(unsigned *, unsigned *);
-void interact_day_item_paste(unsigned *, unsigned *);
+void interact_day_item_cut_free(unsigned);
+void interact_day_item_cut(unsigned *, unsigned *, unsigned);
+void interact_day_item_copy(unsigned *, unsigned *, unsigned);
+void interact_day_item_paste(unsigned *, unsigned *, unsigned);
 void interact_todo_add(void);
 void interact_todo_delete(void);
 void interact_todo_edit(void);
@@ -768,7 +771,7 @@ void keys_free(void);
 void keys_dump_defaults(char *);
 const char *keys_get_label(enum key);
 enum key keys_get_action(int);
-enum key keys_getch(WINDOW * win, int *);
+enum key keys_getch(WINDOW * win, int *, int *);
 int keys_assign_binding(int, enum key);
 void keys_remove_binding(int, enum key);
 int keys_str2int(const char *);