mirrors/emacs
1
Fork 0
mirror of git://git.sv.gnu.org/emacs.git synced 2025-12-06 06:20:55 -08:00
Code Issues Projects Releases Wiki Activity

Add predicate proper-list-p

Browse source 
For discussion, see emacs-devel thread starting at
https://lists.gnu.org/archive/html/emacs-devel/2018-04/msg00460.html.

* lisp/subr.el (proper-list-p): New function.
Implementation suggested by Paul Eggert <eggert@cs.ucla.edu> in
https://lists.gnu.org/archive/html/emacs-devel/2018-06/msg00138.html.
* doc/lispref/lists.texi (List Elements):
* etc/NEWS: Document proper-list-p.
* lisp/org/ob-core.el (org-babel-insert-result):
* lisp/emacs-lisp/byte-opt.el (byte-optimize-if):
* lisp/emacs-lisp/cl-macs.el (cl--make-usage-args): Use proper-list-p.
* lisp/emacs-lisp/ert.el (ert--proper-list-p): Remove.
Replaced by proper-list-p in lisp/subr.el.
(ert--explain-equal-rec): Use proper-list-length.
* lisp/format.el (format-proper-list-p): Remove.
Replaced by proper-list-p in lisp/subr.el.
(format-annotate-single-property-change): Use proper-list-p.
* test/lisp/emacs-lisp/ert-tests.el (ert-test-proper-list-p):
Move from here...
* test/lisp/subr-tests.el (subr-tests--proper-list-length):
...to here, mutatis mutandis.
This commit is contained in:
Basil L. Contovounesios 2018-07-09 18:46:33 -07:00 • committed by Paul Eggert
parent e4ad2d1a8f
commit 2fde6275b6
10 changed files with 59 additions and 78 deletions
Download patch file Download diff file Expand all files Collapse all files

3
lisp/emacs-lisp/byte-opt.el
View file

@ -982,8 +982,7 @@
;; (if <test> <then> nil) ==> (if <test> <then>)
(let ((clause (nth 1 form)))
(cond ((and (eq (car-safe clause) 'progn)
;; `clause' is a proper list.
(null (cdr (last clause))))
(proper-list-p clause))
(if (null (cddr clause))
;; A trivial `progn'.
(byte-optimize-if `(if ,(cadr clause) ,@(nthcdr 2 form)))