Comment tweak.
diff --git a/lib/functions.c b/lib/functions.c
index bcdaa0e..b42f62d 100644
--- a/lib/functions.c
+++ b/lib/functions.c
@@ -195,7 +195,8 @@
 }
 
 // Cannonicalizes path by removing ".", "..", and "//" elements.  This is not
-// the same as realpath(), where "dir/.."
+// the same as realpath(), where "dir/.." could wind up somewhere else by
+// following symlinks.
 char *xabspath(char *path)
 {
 	char *from, *to;