comparison lisp/faces.el @ 5366:f00192e1cd49

Examining the result of #'length: `eql', not `=', it's better style & cheaper 2011-03-08 Aidan Kehoe <kehoea@parhasard.net> * buff-menu.el (list-buffers-noselect): * byte-optimize.el (byte-optimize-identity): * byte-optimize.el (byte-optimize-if): * byte-optimize.el (byte-optimize-nth): * byte-optimize.el (byte-optimize-nthcdr): * bytecomp.el (byte-compile-warn-wrong-args): * bytecomp.el (byte-compile-two-args-19->20): * bytecomp.el (byte-compile-list): * bytecomp.el (byte-compile-beginning-of-line): * bytecomp.el (byte-compile-set): * bytecomp.el (byte-compile-set-default): * bytecomp.el (byte-compile-values): * bytecomp.el (byte-compile-values-list): * bytecomp.el (byte-compile-integerp): * bytecomp.el (byte-compile-multiple-value-list-internal): * bytecomp.el (byte-compile-throw): * cl-macs.el (cl-do-arglist): * cl-macs.el (cl-parse-loop-clause): * cl-macs.el (multiple-value-bind): * cl-macs.el (multiple-value-setq): * cl-macs.el (get-setf-method): * cmdloop.el (command-error): * cmdloop.el (y-or-n-p-minibuf): * cmdloop.el (yes-or-no-p-minibuf): * coding.el (unencodable-char-position): * cus-edit.el (custom-face-prompt): * cus-edit.el (custom-buffer-create-internal): * cus-edit.el (widget-face-action): * cus-edit.el (custom-group-value-create): * descr-text.el (describe-char-unicode-data): * dialog-gtk.el (popup-builtin-question-dialog): * dragdrop.el (experimental-dragdrop-drop-log-function): * dragdrop.el (experimental-dragdrop-drop-mime-default): * easymenu.el (easy-menu-add): * easymenu.el (easy-menu-remove): * faces.el (read-face-name): * faces.el (set-face-stipple): * files.el (file-name-non-special): * font.el (font-combine-fonts): * font.el (font-set-face-font): * font.el (font-parse-rgb-components): * font.el (font-rgb-color-p): * font.el (font-color-rgb-components): * gnuserv.el (gnuserv-edit-files): * help.el (key-or-menu-binding): * help.el (function-documentation-1): * help.el (function-documentation): * info.el (info): * isearch-mode.el (isearch-exit): * isearch-mode.el (isearch-edit-string): * isearch-mode.el (isearch-*-char): * isearch-mode.el (isearch-complete1): * ldap.el (ldap-encode-country-string): * ldap.el (ldap-decode-string): * minibuf.el (read-file-name-internal-1): * minibuf.el (read-non-nil-coding-system): * minibuf.el (get-user-response): * mouse.el (drag-window-divider): * mule/ccl.el: * mule/ccl.el (ccl-compile-if): * mule/ccl.el (ccl-compile-break): * mule/ccl.el (ccl-compile-repeat): * mule/ccl.el (ccl-compile-write-repeat): * mule/ccl.el (ccl-compile-call): * mule/ccl.el (ccl-compile-end): * mule/ccl.el (ccl-compile-read-multibyte-character): * mule/ccl.el (ccl-compile-write-multibyte-character): * mule/ccl.el (ccl-compile-translate-character): * mule/ccl.el (ccl-compile-mule-to-unicode): * mule/ccl.el (ccl-compile-unicode-to-mule): * mule/ccl.el (ccl-compile-lookup-integer): * mule/ccl.el (ccl-compile-lookup-character): * mule/ccl.el (ccl-compile-map-multiple): * mule/ccl.el (ccl-compile-map-single): * mule/devan-util.el (devanagari-compose-to-one-glyph): * mule/devan-util.el (devanagari-composition-component): * mule/mule-cmds.el (finish-set-language-environment): * mule/viet-util.el: * mule/viet-util.el (viet-encode-viscii-char): * multicast.el (open-multicast-group): * newcomment.el (comment-quote-nested): * newcomment.el (comment-region): * newcomment.el (comment-dwim): * regexp-opt.el (regexp-opt-group): * replace.el (map-query-replace-regexp): * specifier.el (derive-device-type-from-tag-set): * subr.el (skip-chars-quote): * test-harness.el (test-harness-from-buffer): * test-harness.el (batch-test-emacs): * wid-edit.el (widget-choice-action): * wid-edit.el (widget-symbol-prompt-internal): * wid-edit.el (widget-color-action): * window-xemacs.el (push-window-configuration): * window-xemacs.el (pop-window-configuration): * window.el (quit-window): * x-compose.el (electric-diacritic): It's better style, and cheaper (often one assembler instruction vs. a C funcall in the byte code), to use `eql' instead of `=' when it's clear what numerical type a given result will be. Change much of our code to do this, with the help of a byte-compiler change (not comitted) that looked for calls to #'length (which always returns an integer) in its args.
author Aidan Kehoe <kehoea@parhasard.net>
date Tue, 08 Mar 2011 23:41:52 +0000
parents 2a54dfbe434f
children ed74d2ca7082
comparison
equal deleted inserted replaced
5365:dbae25a8949d 5366:f00192e1cd49
57 :group 'emacs) 57 :group 'emacs)
58 58
59 59
60 (defun read-face-name (prompt) 60 (defun read-face-name (prompt)
61 (let (face) 61 (let (face)
62 (while (= (length face) 0) ; nil or "" 62 (while (eql (length face) 0) ; nil or ""
63 (setq face (completing-read prompt 63 (setq face (completing-read prompt
64 (mapcar (lambda (x) (list (symbol-name x))) 64 (mapcar (lambda (x) (list (symbol-name x)))
65 (face-list)) 65 (face-list))
66 nil t))) 66 nil t)))
67 (intern face))) 67 (intern face)))
2037 pixmap 2037 pixmap
2038 (locate-file pixmap bitmap-path 2038 (locate-file pixmap bitmap-path
2039 '(".xbm" ""))))) 2039 '(".xbm" "")))))
2040 (and file 2040 (and file
2041 `[xbm :file ,file]))) 2041 `[xbm :file ,file])))
2042 ((and (listp pixmap) (= (length pixmap) 3)) 2042 ((and (listp pixmap) (eql (length pixmap) 3))
2043 `[xbm :data ,pixmap]) 2043 `[xbm :data ,pixmap])
2044 (t nil)))) 2044 (t nil))))
2045 ;; We're signaling a continuable error; let's make sure the 2045 ;; We're signaling a continuable error; let's make sure the
2046 ;; function `stipple-pixmap-p' at least exists. 2046 ;; function `stipple-pixmap-p' at least exists.
2047 (flet ((stipple-pixmap-p (pixmap) 2047 (flet ((stipple-pixmap-p (pixmap)
2048 (or (stringp pixmap) 2048 (or (stringp pixmap)
2049 (and (listp pixmap) (= (length pixmap) 3))))) 2049 (and (listp pixmap) (eql (length pixmap) 3)))))
2050 (setq pixmap (signal 'wrong-type-argument 2050 (setq pixmap (signal 'wrong-type-argument
2051 (list 'stipple-pixmap-p pixmap))))) 2051 (list 'stipple-pixmap-p pixmap)))))
2052 (check-type frame (or null frame)) 2052 (check-type frame (or null frame))
2053 (set-face-background-pixmap face instantiator frame))) 2053 (set-face-background-pixmap face instantiator frame)))
2054 2054