X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fmacros.lisp;h=61a6d4473277788120a46a78eb2c7ddeb270e81b;hb=872175cd9cb5b4966a36d4bd92421cc407a0355b;hp=559889eb78b974863c266a780097b92effa42286;hpb=b5703d98da9ebfd688c87e14862ab4e26dc94d14;p=sbcl.git

diff --git a/src/code/macros.lisp b/src/code/macros.lisp
index 559889e..61a6d44 100644
--- a/src/code/macros.lisp
+++ b/src/code/macros.lisp
@@ -203,6 +203,7 @@ the usual naming convention (names like *FOO*) for special variables"
 		      ,body))))
 	`(sb!c::%define-compiler-macro ',name #',def ',lambda-list ,doc)))))
 (defun sb!c::%define-compiler-macro (name definition lambda-list doc)
+  (declare (ignore lambda-list))
   (sb!c::%%define-compiler-macro name definition doc))
 (defun sb!c::%%define-compiler-macro (name definition doc)
   (setf (sb!xc:compiler-macro-function name) definition)
@@ -413,7 +414,7 @@ the usual naming convention (names like *FOO*) for special variables"
 
 (defmacro-mundanely nth-value (n form)
   #!+sb-doc
-  "Evaluates FORM and returns the Nth value (zero based). This involves no
+  "Evaluate FORM and return the Nth value (zero based). This involves no
   consing when N is a trivial constant integer."
   (if (integerp n)
       (let ((dummy-list nil)
@@ -456,10 +457,19 @@ the usual naming convention (names like *FOO*) for special variables"
 				  `(sb!xc:proclaim ',x))
 			      specs))))
 
-(defmacro-mundanely print-unreadable-object ((object stream
-					      &key type identity)
+(defmacro-mundanely print-unreadable-object ((object stream &key type identity)
 					     &body body)
+  "Output OBJECT to STREAM with \"#<\" prefix, \">\" suffix, optionally
+  with object-type prefix and object-identity suffix, and executing the
+  code in BODY to provide possible further output."
   `(%print-unreadable-object ,object ,stream ,type ,identity
 			     ,(if body
 				  `#'(lambda () ,@body)
 				  nil)))
+
+(defmacro-mundanely ignore-errors (&rest forms)
+  #!+sb-doc
+  "Execute FORMS handling ERROR conditions, returning the result of the last
+  form, or (VALUES NIL the-ERROR-that-was-caught) if an ERROR was handled."
+  `(handler-case (progn ,@forms)
+     (error (condition) (values nil condition))))