Display hyperlinks in copy mode and add copy_cursor_hyperlink format to

get the hyperlink under the cursor.

hyperlinks.c

@@ -69,6 +69,7 @@ struct hyperlinks {
 	u_int				next_inner;
 	struct hyperlinks_by_inner_tree	by_inner;
 	struct hyperlinks_by_uri_tree	by_uri;
+	u_int				references;
 };
 
 static int
@@ -206,6 +207,15 @@ hyperlinks_init(void)
 	hl->next_inner = 1;
 	RB_INIT(&hl->by_uri);
 	RB_INIT(&hl->by_inner);
+	hl->references = 1;
+	return (hl);
+}
+
+/* Copy hyperlink set. */
+struct hyperlinks *
+hyperlinks_copy(struct hyperlinks *hl)
+{
+	hl->references++;
 	return (hl);
 }
 
@@ -223,6 +233,8 @@ hyperlinks_reset(struct hyperlinks *hl)
 void
 hyperlinks_free(struct hyperlinks *hl)
 {
-	hyperlinks_reset(hl);
-	free(hl);
+	if (--hl->references == 0) {
+		hyperlinks_reset(hl);
+		free(hl);
+	}
 }

tmux.1

@@ -5498,6 +5498,7 @@ The following variables are available, where appropriate:
 .It Li "command_list_name" Ta "" Ta "Command name if listing commands"
 .It Li "command_list_usage" Ta "" Ta "Command usage if listing commands"
 .It Li "config_files" Ta "" Ta "List of configuration files loaded"
+.It Li "copy_cursor_hyperlink" Ta "" Ta "Hyperlink under cursor in copy mode"
 .It Li "copy_cursor_line" Ta "" Ta "Line the cursor is on in copy mode"
 .It Li "copy_cursor_word" Ta "" Ta "Word under cursor in copy mode"
 .It Li "copy_cursor_x" Ta "" Ta "Cursor X position in copy mode"

tmux.h

@@ -3434,6 +3434,7 @@ u_int	 		 hyperlinks_put(struct hyperlinks *, const char *,
 int			 hyperlinks_get(struct hyperlinks *, u_int,
 			     const char **, const char **, const char **);
 struct hyperlinks	*hyperlinks_init(void);
+struct hyperlinks	*hyperlinks_copy(struct hyperlinks *);
 void			 hyperlinks_reset(struct hyperlinks *);
 void			 hyperlinks_free(struct hyperlinks *);
 

window-copy.c

@@ -450,6 +450,8 @@ window_copy_init(struct window_mode_entry *wme,
 	data->scroll_exit = args_has(args, 'e');
 	data->hide_position = args_has(args, 'H');
 
+	if (base->hyperlinks != NULL)
+		data->screen.hyperlinks = hyperlinks_copy(base->hyperlinks);
 	data->screen.cx = data->cx;
 	data->screen.cy = data->cy;
 	data->mx = data->cx;
@@ -764,6 +766,18 @@ window_copy_get_line(struct window_pane *wp, u_int y)
 	return (format_grid_line(gd, gd->hsize + y));
 }
 
+static void *
+window_copy_cursor_hyperlink_cb(struct format_tree *ft)
+{
+	struct window_pane		*wp = format_get_pane(ft);
+	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
+	struct window_copy_mode_data	*data = wme->data;
+	struct grid			*gd = data->screen.grid;
+
+	return (format_grid_hyperlink(gd, data->cx, gd->hsize + data->cy,
+	    &data->screen));
+}
+
 static void *
 window_copy_cursor_word_cb(struct format_tree *ft)
 {
@@ -833,6 +847,8 @@ window_copy_formats(struct window_mode_entry *wme, struct format_tree *ft)
 
 	format_add_cb(ft, "copy_cursor_word", window_copy_cursor_word_cb);
 	format_add_cb(ft, "copy_cursor_line", window_copy_cursor_line_cb);
+	format_add_cb(ft, "copy_cursor_hyperlink",
+	    window_copy_cursor_hyperlink_cb);
 }
 
 static void
@@ -2486,7 +2502,8 @@ window_copy_cmd_refresh_from_pane(struct window_copy_cmd_state *cs)
 
 	screen_free(data->backing);
 	free(data->backing);
-	data->backing = window_copy_clone_screen(&wp->base, &data->screen, NULL,   NULL, wme->swp != wme->wp);
+	data->backing = window_copy_clone_screen(&wp->base, &data->screen, NULL,
+	    NULL, wme->swp != wme->wp);
 
 	window_copy_size_changed(wme);
 	return (WINDOW_COPY_CMD_REDRAW);