Suspicious XawMax in GetBlockBoundaries

In GetBlockBoundaries, the following code looks suspicious:

XawMax(ctx->text.s.right, ctx->text.s.right)

I suspect this is a simple typo and that the left right should be left. On the other hand, this code is 18 years old, so somebody else should have already stumbled upon it. I found it when I opened the preprocessed source code in CLion, where Clang warned:

Self-comparison always evaluates to false