[Ecls-list] Latest changes

[Tobias C. Rittweiler]

Juan Jose Garcia-Ripoll writes:

> * Printer:
>
>  - Readtables have a new flag that makes them read-only. Function
> 	(si::readtable-lock readtable &optional new-flag)
>    either reads the state of this flag (if NEW-FLAG is missing) or
>    also sets it.

Nice! The standard-readtable is locked by default, right?

>  - The compiler now uses cl_core to efficiently access certain lisp
>    constants (standard packages, standard readtables, etc)
>
>  - WITH-STANDARD-IO has been optimized to use PROGV
>    and a fixed set of constants

Locking the standard-readtable would mean you can just bind *READTABLE*
to the standard-readtable here, not having to make a copy.

  -T.