Lisp: lambda expressions are function names now.

* eval.c (lookup_fun): With this two-liner change, the
forms ((lambda (x) x) 42) and (fun (lambda ()))
just work. This is not just compatibility with other
dialects; it is necessary for consistency with func-get-name,
which already returns lambda expressions, effectively
asserting that they are function names.

* txr.1: Fix documentation for fun operator. The
Dialect Note saying that a lambda expression is not a
function name in TXR Lisp is removed. Document that
function names may be any of those produced by
func-get-name. This has already been true for macros
and methods, just not for lambda expressions.
Under fun-get-name, document that lambda expressions
are produced for interpreted functions not found in
any binding by the previous searches.

1 files changed, 2 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index f8186977..e2759186 100644
--- a/eval.c
+++ b/eval.c
@@ -490,6 +490,8 @@ val lookup_fun(val env, val sym)
                    cons(sym, static_slot(type, slot)));
       } else if (car(sym) == macro_s) {
         return lookup_mac(nil, cadr(sym));
+      } else if (car(sym) == lambda_s) {
+        return cons(sym, func_interp(env, sym));
       }
     }
     return or2(gethash(top_fb, sym),