vis: add # register to insert cursor number

5 files changed, 16 insertions, 0 deletions

diff --git a/man/vis.1 b/man/vis.1
index 66ec44f..7784af2 100644
--- a/man/vis.1
+++ b/man/vis.1
@@ -152,6 +152,8 @@ command register, most recently executed command
 black hole
 .Pq Pa /dev/null
 register, ignore content is always empty
+.It Ic \(dq#
+cursor number (readonly)
 .El
 .Pp
 If no explicit register is specified a default register is used.
diff --git a/vis-core.h b/vis-core.h
index 4df0cd4..51d3ae8 100644
--- a/vis-core.h
+++ b/vis-core.h
@@ -45,6 +45,7 @@ typedef struct {
 	bool append;
 	enum {
 		REGISTER_NORMAL,
+		REGISTER_NUMBER,
 		REGISTER_BLACKHOLE,
 		REGISTER_CLIPBOARD,
 	} type;
diff --git a/vis-registers.c b/vis-registers.c
index f0ebb15..f5b5d7b 100644
--- a/vis-registers.c
+++ b/vis-registers.c
@@ -56,6 +56,16 @@ const char *register_slot_get(Vis *vis, Register *reg, size_t slot, size_t *len)
 			*len = buffer_length0(buf);
 		return buffer_content0(buf);
 	}
+	case REGISTER_NUMBER:
+	{
+		Buffer *buf = array_get(&reg->values, 0);
+		if (!buf)
+			return NULL;
+		buffer_printf(buf, "%zu", slot+1);
+		if (len)
+			*len = buffer_length0(buf);
+		return buffer_content0(buf);
+	}
 	case REGISTER_CLIPBOARD:
 	{
 		Buffer buferr;
@@ -246,4 +256,5 @@ const RegisterDef vis_registers[] = {
 	[VIS_REG_SEARCH]     = { '/', VIS_HELP("Last search pattern")                              },
 	[VIS_REG_COMMAND]    = { ':', VIS_HELP("Last :-command")                                   },
 	[VIS_REG_SHELL]      = { '!', VIS_HELP("Last shell command given to either <, >, |, or !") },
+	[VIS_REG_NUMBER]     = { '#', VIS_HELP("Cursor number")                                    },
 };
diff --git a/vis.c b/vis.c
index 644fe08..d4031b2 100644
--- a/vis.c
+++ b/vis.c
@@ -652,6 +652,7 @@ Vis *vis_new(Ui *ui, VisEvent *event) {
 		register_init(&vis->registers[i]);
 	vis->registers[VIS_REG_BLACKHOLE].type = REGISTER_BLACKHOLE;
 	vis->registers[VIS_REG_CLIPBOARD].type = REGISTER_CLIPBOARD;
+	vis->registers[VIS_REG_NUMBER].type = REGISTER_NUMBER;
 	array_init(&vis->operators);
 	array_init(&vis->motions);
 	array_init(&vis->textobjects);
diff --git a/vis.h b/vis.h
index ea02307..d64c877 100644
--- a/vis.h
+++ b/vis.h
@@ -440,6 +440,7 @@ enum VisRegister {
 	VIS_REG_SEARCH,     /* last used search pattern "/ */
 	VIS_REG_COMMAND,    /* last used :-command ": */
 	VIS_REG_SHELL,      /* last used shell command given to either <, >, |, or ! */
+	VIS_REG_NUMBER,     /* cursor number */
 	VIS_REG_a, VIS_REG_b, VIS_REG_c, VIS_REG_d, VIS_REG_e,
 	VIS_REG_f, VIS_REG_g, VIS_REG_h, VIS_REG_i, VIS_REG_j,
 	VIS_REG_k, VIS_REG_l, VIS_REG_m, VIS_REG_n, VIS_REG_o,