Re: Micro-optimizations to avoid some strlen calls.

Agreed.  To borrow from a nearby email of a similar nature (PGConn information retrieval IIRC) - it is not generally a benefit to avoid function call access to data multiple times in a block by substituting in a saved local variable. The function call tends to be more readable then having yet one more unimportant name to keep in short-term memory.  As much code already conforms to that the status quo is a preferred state unless there is a demonstrable performance gain to be had.  The readability, and lack of churn, is otherwise more important.

David J.