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-rw-r--r--tmux.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index 578fbb4d..b1d12361 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2339,6 +2339,7 @@ struct session_group *session_group_new(const char *);
void session_group_add(struct session_group *, struct session *);
void session_group_synchronize_to(struct session *);
void session_group_synchronize_from(struct session *);
+u_int session_group_count(struct session_group *);
void session_renumber_windows(struct session *);
/* utf8.c */