use macro for /usr/local/plan9
diff --git a/man/man3/complete.3 b/man/man3/complete.3
index dc74050..6ccf9da 100644
--- a/man/man3/complete.3
+++ b/man/man3/complete.3
@@ -91,7 +91,7 @@
 .IR acme (1),
 file name completion is triggered by a control-F character or an Insert character.
 .SH SOURCE
-.B /usr/local/plan9/src/libcomplete
+.B \*9/src/libcomplete
 .SH SEE ALSO
 .IR rio (1),
 .IR acme (1)