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Fix the bootstrap differently, so zerop can be where it belongs

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Suggested by Robert Pluim <rpluim@gmail.com>.

* lisp/emacs-lisp/byte-run.el (defun-declarations-alist): Avoid cadr/cddr.
* lisp/subr.el (zerop): Un-revert 2018-07-10T23:08:58-07:00!contovob@tcd.ie.
This commit is contained in:
Stefan Monnier 2018-07-12 10:29:28 -04:00
parent 84e5986902
commit aeefbc41be
2 changed files with 13 additions and 13 deletions
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9
lisp/emacs-lisp/byte-run.el
View file

@ -116,7 +116,10 @@ If `error-free', drop calls even if `byte-compile-delete-errors' is nil.")
(if (not (eq (car-safe compiler-function) 'lambda))
`(eval-and-compile
(function-put ',f 'compiler-macro #',compiler-function))
(let ((cfname (intern (concat (symbol-name f) "--anon-cmacro"))))
(let ((cfname (intern (concat (symbol-name f) "--anon-cmacro")))
;; Avoid cadr/cddr so we can use `compiler-macro' before
;; defining cadr/cddr.
(data (cdr compiler-function)))
`(progn
(eval-and-compile
(function-put ',f 'compiler-macro #',cfname))
@ -125,8 +128,8 @@ If `error-free', drop calls even if `byte-compile-delete-errors' is nil.")
;; if needed.
:autoload-end
(eval-and-compile
(defun ,cfname (,@(cadr compiler-function) ,@args)
,@(cddr compiler-function))))))))
(defun ,cfname (,@(car data) ,@args)
,@(cdr data))))))))
(list 'doc-string
#'(lambda (f _args pos)
(list 'function-put (list 'quote f)

17
lisp/subr.el
View file

@ -359,6 +359,13 @@ was called."
(lambda (&rest args2)
(apply fun (append args args2))))
(defun zerop (number)
"Return t if NUMBER is zero."
;; Used to be in C, but it's pointless since (= 0 n) is faster anyway because
;; = has a byte-code.
(declare (compiler-macro (lambda (_) `(= 0 ,number))))
(= 0 number))
;;;; List functions.
@ -548,16 +555,6 @@ If N is omitted or nil, remove the last element."
(if (> n 0) (setcdr (nthcdr (- (1- m) n) list) nil))
list))))
;; This function appears here instead of under the 'Basic Lisp
;; functions' heading because during bootstrap its compiler-macro
;; requires functions defined under the 'List functions' heading.
(defun zerop (number)
"Return t if NUMBER is zero."
;; Used to be in C, but it's pointless since (= 0 n) is faster anyway because
;; = has a byte-code.
(declare (compiler-macro (lambda (_) `(= 0 ,number))))
(= 0 number))
(defun proper-list-p (object)
"Return OBJECT's length if it is a proper list, nil otherwise.
A proper list is neither circular nor dotted (i.e., its last cdr