comparison lisp/minibuf.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 668c73e222fd
children ed74d2ca7082
comparison
equal deleted inserted replaced
5365:dbae25a8949d 5366:f00192e1cd49
1819 ;; An odd number of trailing $'s 1819 ;; An odd number of trailing $'s
1820 (let* ((start (match-beginning 3)) 1820 (let* ((start (match-beginning 3))
1821 (completion-ignore-case (file-system-ignore-case-p 1821 (completion-ignore-case (file-system-ignore-case-p
1822 (or dir default-directory))) 1822 (or dir default-directory)))
1823 (env (substring string 1823 (env (substring string
1824 (cond ((= start (length string)) 1824 (cond ((eql start (length string))
1825 ;; "...$" 1825 ;; "...$"
1826 start) 1826 start)
1827 ((= (aref string start) ?{) 1827 ((eql (aref string start) ?{)
1828 ;; "...${..." 1828 ;; "...${..."
1829 (1+ start)) 1829 (1+ start))
1830 (t 1830 (t
1831 start)))) 1831 start))))
1832 (head (substring string 0 (1- start))) 1832 (head (substring string 0 (1- start)))
2209 2209
2210 (defun read-non-nil-coding-system (prompt) 2210 (defun read-non-nil-coding-system (prompt)
2211 "Read a non-nil coding-system from the minibuffer. 2211 "Read a non-nil coding-system from the minibuffer.
2212 Prompt with string PROMPT." 2212 Prompt with string PROMPT."
2213 (let ((retval (intern ""))) 2213 (let ((retval (intern "")))
2214 (while (= 0 (length (symbol-name retval))) 2214 (while (eql 0 (length (symbol-name retval)))
2215 (setq retval (intern (completing-read prompt obarray 2215 (setq retval (intern (completing-read prompt obarray
2216 'find-coding-system 2216 'find-coding-system
2217 t)))) 2217 t))))
2218 retval)) 2218 retval))
2219 2219
2345 (if res (return (third (car res))) 2345 (if res (return (third (car res)))
2346 (message "%s%s(%s) %s" pre question possible 2346 (message "%s%s(%s) %s" pre question possible
2347 (single-key-description event)) 2347 (single-key-description event))
2348 (ding nil 'y-or-n-p) 2348 (ding nil 'y-or-n-p)
2349 (discard-input) 2349 (discard-input)
2350 (if (= (length pre) 0) 2350 (if (eql (length pre) 0)
2351 (setq pre (format "Please answer %s. " 2351 (setq pre (format "Please answer %s. "
2352 ;; 17 parens! a record in 2352 ;; 17 parens! a record in
2353 ;; our lisp code. 2353 ;; our lisp code.
2354 possible))))))))))))))))) 2354 possible)))))))))))))))))
2355 2355