Add a -w flag to set- and load-buffer to send to clipboard using OSC 52.

GitHub issue 2363.

cmd-load-buffer.c

@@ -37,14 +37,15 @@ const struct cmd_entry cmd_load_buffer_entry = {
 	.name = "load-buffer",
 	.alias = "loadb",
 
-	.args = { "b:", 1, 1 },
+	.args = { "b:t:w", 1, 1 },
-	.usage = CMD_BUFFER_USAGE " path",
+	.usage = CMD_BUFFER_USAGE " " CMD_TARGET_CLIENT_USAGE " path",
 
-	.flags = CMD_AFTERHOOK,
+	.flags = CMD_AFTERHOOK|CMD_CLIENT_TFLAG|CMD_CLIENT_CANFAIL,
 	.exec = cmd_load_buffer_exec
 };
 
 struct cmd_load_buffer_data {
+	struct client		*client;
 	struct cmdq_item	*item;
 	char			*name;
 };
@@ -54,6 +55,7 @@ cmd_load_buffer_done(__unused struct client *c, const char *path, int error,
     int closed, struct evbuffer *buffer, void *data)
 {
 	struct cmd_load_buffer_data	*cdata = data;
+	struct client			*tc = cdata->client;
 	struct cmdq_item		*item = cdata->item;
 	void				*bdata = EVBUFFER_DATA(buffer);
 	size_t				 bsize = EVBUFFER_LENGTH(buffer);
@@ -72,7 +74,12 @@ cmd_load_buffer_done(__unused struct client *c, const char *path, int error,
 			cmdq_error(item, "%s", cause);
 			free(cause);
 			free(copy);
-		}
+		} else if (tc != NULL &&
+		    tc->session != NULL &&
+		    (~tc->flags & CLIENT_DEAD))
+			tty_set_selection(&tc->tty, copy, bsize);
+		if (tc != NULL)
+			server_client_unref(tc);
 	}
 	cmdq_continue(item);
 
@@ -84,6 +91,7 @@ static enum cmd_retval
 cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
 {
 	struct args			*args = cmd_get_args(self);
+	struct client			*tc = cmdq_get_target_client(item);
 	struct cmd_load_buffer_data	*cdata;
 	const char			*bufname = args_get(args, 'b');
 	char				*path;
@@ -94,6 +102,10 @@ cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
 		cdata->name = xstrdup(bufname);
 	else
 		cdata->name = NULL;
+	if (args_has(args, 'w') && tc != NULL) {
+		cdata->client = tc;
+		cdata->client->references++;
+	}
 
 	path = format_single_from_target(item, args->argv[0]);
 	file_read(cmdq_get_client(item), path, cmd_load_buffer_done, cdata);

cmd-set-buffer.c

@@ -33,10 +33,11 @@ const struct cmd_entry cmd_set_buffer_entry = {
 	.name = "set-buffer",
 	.alias = "setb",
 
-	.args = { "ab:n:", 0, 1 },
+	.args = { "ab:t:n:w", 0, 1 },
-	.usage = "[-a] " CMD_BUFFER_USAGE " [-n new-buffer-name] data",
+	.usage = "[-aw] " CMD_BUFFER_USAGE " [-n new-buffer-name] "
+	         CMD_TARGET_CLIENT_USAGE " data",
 
-	.flags = CMD_AFTERHOOK,
+	.flags = CMD_AFTERHOOK|CMD_CLIENT_TFLAG|CMD_CLIENT_CANFAIL,
 	.exec = cmd_set_buffer_exec
 };
 
@@ -55,6 +56,7 @@ static enum cmd_retval
 cmd_set_buffer_exec(struct cmd *self, struct cmdq_item *item)
 {
 	struct args		*args = cmd_get_args(self);
+	struct client		*tc = cmdq_get_target_client(item);
 	struct paste_buffer	*pb;
 	char			*bufdata, *cause;
 	const char		*bufname, *olddata;
@@ -118,6 +120,8 @@ cmd_set_buffer_exec(struct cmd *self, struct cmdq_item *item)
 		free(cause);
 		return (CMD_RETURN_ERROR);
 	}
+	if (args_has(args, 'w') && tc != NULL)
+ 		tty_set_selection(&tc->tty, bufdata, bufsize);
 
 	return (CMD_RETURN_NORMAL);
 }

tmux.1

@@ -5651,12 +5651,21 @@ See the
 .Sx FORMATS
 section.
 .It Xo Ic load-buffer
+.Op Fl w
 .Op Fl b Ar buffer-name
+.Op Fl t Ar target-client
 .Ar path
 .Xc
 .D1 (alias: Ic loadb )
 Load the contents of the specified paste buffer from
 .Ar path .
+If
+.Fl w
+is given, the buffer is also sent to the clipboard for
+.Ar target-client
+using the
+.Xr xterm 1
+escape sequence, if possible.
 .It Xo Ic paste-buffer
 .Op Fl dpr
 .Op Fl b Ar buffer-name
@@ -5693,14 +5702,22 @@ The
 .Fl a
 option appends to rather than overwriting the file.
 .It Xo Ic set-buffer
-.Op Fl a
+.Op Fl aw
 .Op Fl b Ar buffer-name
+.Op Fl t Ar target-client
 .Op Fl n Ar new-buffer-name
 .Ar data
 .Xc
 .D1 (alias: Ic setb )
 Set the contents of the specified buffer to
 .Ar data .
+If
+.Fl w
+is given, the buffer is also sent to the clipboard for
+.Ar target-client
+using the
+.Xr xterm 1
+escape sequence, if possible.
 The
 .Fl a
 option appends to rather than overwriting the buffer.

tmux.h

@@ -2126,6 +2126,7 @@ int	tty_open(struct tty *, char **);
 void	tty_close(struct tty *);
 void	tty_free(struct tty *);
 void	tty_update_features(struct tty *);
+void	tty_set_selection(struct tty *, const char *, size_t);
 void	tty_write(void (*)(struct tty *, const struct tty_ctx *),
 	    struct tty_ctx *);
 void	tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);

tty.c

@@ -1896,19 +1896,27 @@ tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
 void
 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
 {
-	char	*buf;
+	tty_set_selection(tty, ctx->ptr, ctx->num);
-	size_t	 off;
+}
+
+void
+tty_set_selection(struct tty *tty, const char *buf, size_t len)
+{
+	char	*encoded;
+	size_t	 size;
 
 	if (!tty_term_has(tty->term, TTYC_MS))
 		return;
+	if (~tty->flags & TTY_STARTED)
+		return;
 
-	off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
+	size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
-	buf = xmalloc(off);
+	encoded = xmalloc(size);
 
-	b64_ntop(ctx->ptr, ctx->num, buf, off);
+	b64_ntop(buf, len, encoded, size);
-	tty_putcode_ptr2(tty, TTYC_MS, "", buf);
+	tty_putcode_ptr2(tty, TTYC_MS, "", encoded);
 
-	free(buf);
+	free(encoded);
 }
 
 void