tmux-darwin-get-cwd.patch

diff --git a/osdep-darwin.c b/osdep-darwin.c
index c5820df..7b15446 100644
--- a/osdep-darwin.c
+++ b/osdep-darwin.c
@@ -18,6 +18,7 @@

 #include <sys/types.h>
 #include <sys/sysctl.h>
+#include <libproc.h>

 #include <event.h>
 #include <stdlib.h>
@@ -52,6 +53,15 @@
 char *
 osdep_get_cwd(pid_t pid)
 {
+	static char wd[PATH_MAX];
+	struct proc_vnodepathinfo pathinfo;
+	int ret;
+
+	ret = proc_pidinfo(pid, PROC_PIDVNODEPATHINFO, 0, &pathinfo, sizeof(pathinfo));
+	if (ret == sizeof(pathinfo)) {
+		strlcpy(wd, pathinfo.pvi_cdir.vip_path, sizeof(wd));
+		return (wd);
+	}
 	return (NULL);
 }