X-Git-Url: https://git.distorted.org.uk/~mdw/runlisp/blobdiff_plain/42ca052285de2281e425b7dc470f62621127b3e1..34e1c00f63526e212637f8219f9a2a3d97b0d22a:/README.org

diff --git a/README.org b/README.org
index 821b4c9..29fb37d 100644
--- a/README.org
+++ b/README.org
@@ -69,6 +69,13 @@ in the ~-L~ option, separated by commas:
 :                          #-(or sbcl ccl) "an unexpected"
 :                          " Common Lisp!~%"))
 
+It is not an error to include the name of an unrecognized Lisp system in
+the ~-L~ option: such names are simply ignored.  This allows a script to
+declare support for unusual or locally installed Lisp systems without
+compromising its portability to sites where such systems are unknown, or
+which are still running older versions of ~runlisp~ which haven't been
+updated with the necessary configuration for those systems.
+
 ** Embedded options
 
 If your script requires features of particular Lisp implementations
@@ -321,7 +328,9 @@ Lisp.  (SBCL's command-line interface is well thought-out, so this is an
 ideal opportunity to explain how ~runlisp~ configuration works, without
 getting bogged down in the details of fighting less amenable Lisps.)
 
-The provided ~0base.conf~ file defines SBCL as follows.
+The provided ~0base.conf~ file used to define SBCL as follows.  (The
+real version now contains a kludge for old versions, which needn't
+concern us here.)
 
 : [sbcl]
 :