{"id":10020815,"date":"2025-06-06T22:44:07","date_gmt":"2025-06-06T14:44:07","guid":{"rendered":"https:\/\/itmax.cn\/?p=10020815"},"modified":"2025-06-06T22:44:07","modified_gmt":"2025-06-06T14:44:07","slug":"%e4%bd%a0%e4%bc%9a%e5%86%99-emacs-%e5%91%bd%e4%bb%a4%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10020815","title":{"rendered":"\u4f60\u4f1a\u5199 Emacs \u547d\u4ee4\u5417\uff1f"},"content":{"rendered":"

=> \u4e0a\u4e00\u7bc7<\/strong>\uff1aEmacs \u7684\u4e00\u4e9b\u672c\u80fd<\/a><\/p><\/blockquote>\n

\u524d\u8a00<\/h2>\n

\u8ba1\u7b97\u673a\u4e0a\u53e4\u65f6\u4ee3\uff0c\u5927\u6982\u662f\u4e0a\u4e2a\u4e16\u7eaa 70 \u5e74\u4ee3\u4e2d\u671f\uff0c\u6709\u4e00\u79cd\u8ba1\u7b97\u673a\uff0c\u540d\u66f0 Lisp \u673a\uff0c\u5176 CPU \u53ef\u4f5c\u4e3a Lisp \u8bed\u8a00\u7684\u89e3\u91ca\u5668\uff0c\u4ea6\u5373\u5728\u8fd9\u79cd\u8ba1\u7b97\u673a\u91cc\uff0cLisp \u7a0b\u5e8f\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\u3002\u8b6c\u5982\uff0c\u4f60\u6240\u5199\u7684\u6bcf\u4e2a Lisp \u8868\u8fbe\u5f0f\uff0cCPU \u53ef\u5bf9\u5176\u6c42\u503c\uff0c\u4e8e\u662f\u5355\u4e2a\u8868\u8fbe\u5f0f\u5373\u53ef\u4e3a\u7a0b\u5e8f\uff0c\u5c31\u50cf\u5730\u7403\u4e0a\u6700\u65e9\u7684\u751f\u547d\u4f53\u2014\u2014\u5355\u7ec6\u80de\u751f\u7269\u4ee5\u53ca\u540e\u6765\u7684\u591a\u7ec6\u80de\u751f\u7269\u3002<\/p>\n

\u65f6\u95f4\u5230\u4e86 80 \u5e74\u4ee3\u521d\u671f\uff0cLisp \u673a\u5728\u5e02\u573a\u4e0a\u8d25\u7ed9\u4e86\u8fd0\u884c\u7740 Unix \u64cd\u4f5c\u7cfb\u7edf\u7684\u8ba1\u7b97\u673a\u3002\u4e4b\u540e\u5e74\u8f7b\u7684\u9ed1\u5ba2 Richard Stallman \u5728 Unix \u7cfb\u7edf\u91cc\u590d\u6d3b\u4e86 Lisp \u673a\u3002\u8fd9\u4e2a\u91cd\u751f\u7684 Lisp \u673a\u4fbf\u662f Emacs\uff0c\u662f Richard Stallman \u9886\u5bfc\u7684\u81ea\u7531\u8f6f\u4ef6\u9769\u547d\u4e8b\u4e1a\u7684\u4e00\u90e8\u5206\u3002Stallman \u7684\u7406\u60f3\u662f\u521b\u9020\u4e00\u4e2a\u53ef\u4f9b\u4eba\u7c7b\u81ea\u7531\u4f7f\u7528\u7684 Unix \u7cfb\u7edf\u3002\u4ed6\u548c\u4e00\u4e9b\u5fd7\u540c\u9053\u5408\u7684\u9ed1\u5ba2\u594b\u6597\u6570\u5e74\uff0c\u521b\u9020\u4e86\u53ef\u4e0e Unix \u7cfb\u7edf\u9002\u914d\u7684\u8f6f\u4ef6\u751f\u6001\uff0c\u4e07\u4e8b\u4ff1\u5907\uff0c\u552f\u7f3a\u5185\u6838\uff0c\u76f8\u5f53\u4e8e\u4ed6\u4eec\u521b\u9020\u51fa\u6765\u4e00\u8f86\u5c1a\u4e0d\u5177\u5907\u5f15\u64ce\u7684\u6c7d\u8f66\u3002<\/p>\n

90 \u5e74\u4ee3\u521d\uff0c\u53c8\u4e00\u4f4d\u5e74\u8f7b\u7684\u9ed1\u5ba2\uff0cLinus Torvalds \u521b\u9020\u4e86 Linux \u5185\u6838\u3002\u5728\u5f53\u65f6\u7684\u81ea\u7531\u8f6f\u4ef6\u7cbe\u795e\u7684\u611f\u53ec\u4e0b\uff0c\u4ed6\u5c06 Linux \u5185\u6838\u4e5f\u4ee5\u81ea\u7531\u8f6f\u4ef6\u7684\u5f62\u5f0f\u516c\u8bf8\u4e8e\u4f17\uff0c\u4e8e\u662f GNU \u9879\u76ee\u5919\u613f\u5f97\u507f\uff0c\u4e00\u4e2a\u5b8c\u6574\u7684 Unix \u7cfb\u7edf\u7684\u66ff\u4ee3\u54c1 GNU\/Linux \u5c31\u6b64\u8bde\u751f\u3002\u4e0d\u8fc7\uff0c\u4e3a GNU \u4f1f\u5927\u80dc\u5229\u6b22\u547c\u7684\u4f59\u97f3\u5c1a\u5728\u7ed5\u6881\u4e4b\u65f6\uff0c\u81ea\u7531\u8f6f\u4ef6\u9635\u8425\u53d1\u751f\u4e86\u4e25\u91cd\u5206\u88c2\u3002\u4ee5 Eric Raymond \u4e3a\u9996\u7684\u4e00\u90e8\u5206\u81ea\u7531\u8f6f\u4ef6\u5f00\u53d1\u8005\u8ba4\u4e3a\u8d2b\u7a77\u4e0d\u662f\u793e\u4f1a\u4e3b\u4e49\uff0c\u5fc5\u987b\u62e5\u62b1\u5e02\u573a\uff0c\u4e8e\u662f\u521b\u5efa\u4e86\u5f00\u6e90\u8f6f\u4ef6\u7406\u5ff5\uff0c\u4e0e GNU \u9879\u76ee\u5206\u9053\u626c\u9573\u3002<\/p>\n

\u65e0\u8bba\u98ce\u4e91\u5982\u4f55\u53d8\u5e7b\uff0c\u65f6\u81f3\u4eca\u65e5\uff0cEmacs \u4f9d\u7136\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u8f6f\u4ef6\uff0c\u4e14\u987d\u5f3a\u8fdb\u5316\u7740\u3002\u5b83\u6d3b\u5728 Linux \u91cc\uff0c\u6d3b\u5728 macOS \u91cc\uff0c\u6d3b\u5728 Windows \u91cc\uff0c\u6d3b\u5728 Android \u624b\u673a\u91cc\u3002Lisp \u673a\u4e0d\u590d\u5b58\u5728\uff0c\u800c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 Elisp \u8bed\u8a00\u611f\u53d7\u5176\u7075\u9b42\u3002\u4f60\u4f9d\u7136\u53ef\u4ee5\u50cf\u5f53\u521d\u5728 Lisp \u673a\u5668\u4e0a\u7684\u9ed1\u5ba2\u90a3\u6837\uff0c\u5bf9\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6c42\u503c\uff0c\u76f8\u5f53\u4e8e\u8fd0\u884c\u4e86\u4e00\u4e2a\u7a0b\u5e8f\u3002<\/p>\n

\u53ef\u4ea4\u4e92\u51fd\u6570<\/h2>\n

\u5728 Unix \u4ee5\u53ca\u540e\u6765\u7684 Linux \u7cfb\u7edf\u4e2d\uff0c\u4e00\u4e2a\u7a0b\u5e8f\u901a\u5e38\u610f\u5473\u7740\u662f\u4e00\u4e2a\u53ef\u4ee5\u5728 Shell \u4e2d\u8fd0\u884c\u7684\u547d\u4ee4\u3002\u5b9e\u9645\u4e0a\uff0cEmacs \u7684\u5fae\u7f13\u51b2\u533a\u4e5f\u53ef\u4ee5\u89c6\u4e3a Shell\uff0c\u53ea\u662f\u5b83\u8fd0\u884c\u7684\u5e76\u975e Unix \u6216 Linux \u4e2d\u7684\u547d\u4ee4\uff0c\u800c\u662f\u4e00\u79cd\u7279\u6b8a\u7684 Elisp \u51fd\u6570\uff0c\u5373\u53ef\u4ea4\u4e92\u51fd\u6570\u3002<\/p>\n

\u4f60\u53ef\u4ee5\u5728 init.el \u6dfb\u52a0\u4e00\u4e2a hello \u51fd\u6570\uff0c\u5176\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n

(defun hello ()\n    (interactive)\n    (princ "Hello world!"))<\/code><\/pre>\n
\u5c06\u5149\u6807\u79fb\u52a8\u5230\u4e0a\u8ff0\u51fd\u6570\u5b9a\u4e49\u7684\u672b\u5c3e\uff0c\u6267\u884c C-x C-e<\/code>\uff0c\u7136\u540e\u6267\u884c M-x hello RET<\/code>\uff0c\u4fbf\u53ef\u5728\u5fae\u7f13\u51b2\u533a\u91cc\u770b\u5230\u300cHello world!\u300d\u5b57\u6837\u3002\u6216\u8005\uff0c\u4fdd\u5b58\u4e0a\u8ff0\u5bf9 init.el \u7684\u5185\u5bb9\uff0c\u91cd\u65b0\u6253\u5f00 Emacs\uff0c\u6267\u884c  M-x hello RET<\/code>\u3002<\/p>\n
\u82e5\u4e00\u4e2a\u51fd\u6570\u7684\u5b9a\u4e49\u91cc\uff0c\u7b2c\u4e00\u4e2a\u8868\u8fbe\u5f0f\u662f (interactive)<\/code>\uff0c\u4fbf\u610f\u5473\u7740\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u4f5c\u4e3a\u547d\u4ee4\u4f7f\u7528\uff0c\u751a\u81f3\u53ef\u4ee5\u901a\u8fc7 C-h f<\/code> \u67e5\u770b\u5176\u8bf4\u660e\u3002Elisp \u51fd\u6570\u5b9a\u4e49\u4e2d\uff0c\u82e5\u7b2c\u4e00\u4e2a\u8868\u8fbe\u5f0f\u662f\u5b57\u7b26\u4e32\uff0c\u8be5\u5b57\u7b26\u4e32\u4fbf\u662f\u51fd\u6570\u7684\u8bf4\u660e\u3002\u4f8b\u5982\uff0c\u91cd\u65b0\u5b9a\u4e49\u4e0a\u8ff0 hello<\/code> \u51fd\u6570\uff1a<\/p>\n
(defun hello ()\n    "\u8fd9\u662f\u4e00\u4e2a\u6ca1\u4ec0\u4e48\u7528\u5904\u7684\u51fd\u6570"\n    (interactive)\n    (princ "Hello world!"))<\/code><\/pre>\n
\u91cd\u65b0\u4f7f\u7528 C-x C-e<\/code> \u8ba9\u8fd9\u4e2a\u51fd\u6570\u7684\u5b9a\u4e49\u751f\u6548\uff0c\u7136\u540e\u6267\u884c C-h f hello RET<\/code>\uff0c\u4fbf\u53ef\u83b7\u5f97\u5982\u4e0b\u56fe\u6240\u793a\u7684\u5e2e\u52a9\u4fe1\u606f\uff1a<\/p>\n
\"hello<\/p>\n
\u53c2\u6570<\/h2>\n
(interactive)<\/code> \u5e76\u975e\u4ec5\u4ec5\u662f\u8ba9\u51fd\u6570\u53d8\u6210\u53ef\u5728 M-x<\/code> \u4e2d\u6267\u884c\u7684\u547d\u4ee4\uff0c\u5b83\u66f4\u91cd\u8981\u7684\u529f\u80fd\u662f\u4ece\u5fae\u7f13\u51b2\u533a\u63a5\u6536\u547d\u4ee4\u6267\u884c\u8005\u63d0\u4f9b\u7684\u53c2\u6570\u5e76\u4e3a\u53c2\u6570\u63d0\u4f9b\u63d0\u793a\u4fe1\u606f\uff0c\u53c2\u6570\u7684\u7c7b\u578b\u53ea\u6709\u4e24\u79cd\u5f62\u5f0f\u2014\u2014\u5b57\u7b26\u4e32\u548c\u6570\u5b57\u3002<\/p>\n
\u4ee5\u4e0b\u4ee3\u7801\u5b9a\u4e49\u4e86\u53ef\u63a5\u6536\u4e24\u4e2a\u53c2\u6570\u7684\u51fd\u6570 foo<\/code>\uff0c\u4ee4\u5176\u5b9a\u4e49\u751f\u6548\u540e\uff0c\u5018\u82e5\u4f60\u6267\u884c M-x foo RET hello RET 3 RET<\/code>\uff0c\u7ed3\u679c\u53ef\u5728\u7f13\u51b2\u533a\u770b\u5230\u300chello 3\u300d\u5b57\u6837\u3002\u5f53\u8f93\u5165 foo<\/code> \u547d\u4ee4\u5e76\u56de\u8f66\u540e\uff0cEmacs \u4f1a\u5728\u5fae\u7f13\u51b2\u533a\u663e\u793a\u300c\u8f93\u5165\u6587\u5b57\uff1a\u300d\u3002\u5728\u8f93\u5165\u300chello\u300d\u5e76\u56de\u8f66\u540e\uff0cEmacs \u4f1a\u5728\u5fae\u7f13\u51b2\u533a\u663e\u793a\u300c\u8f93\u5165\u6570\u5b57\uff1a\u300d\u3002\u5728\u8f93\u5165\u300c3\u300d\u5e76\u56de\u8f66\u540e\uff0cfoo<\/code> \u4fbf\u83b7\u5f97\u4e86\u53c2\u6570 a<\/code> \u548c b<\/code> \u7684\u503c\u3002<\/p>\n
(defun foo (a b)\n    "\u8fd9\u662f\u4e00\u4e2a\u6ca1\u4ec0\u4e48\u7528\u5904\u7684\u51fd\u6570\u3002"\n    (interactive (list\n                     (read-string "\u8f93\u5165\u6587\u5b57\uff1a")\n                     (read-number "\u8f93\u5165\u6570\u5b57\uff1a")))\n    (princ (format "%s %d" a b)))<\/code><\/pre>\n
\u4e0a\u8ff0\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684 interactive<\/code> \u8868\u8fbe\u5f0f\u4e5f\u53ef\u5199\u4e3a\u66f4\u4e3a\u76f4\u63a5\u7684\u5f62\u5f0f\uff1a<\/p>\n
(interactive\n"s\u8f93\u5165\u6587\u5b57\uff1a\nn\u8f93\u5165\u6570\u5b57\uff1a")<\/code><\/pre>\n
s<\/code> \u8868\u793a\u5b57\u7b26\u4e32\uff0cn<\/code> \u8868\u793a\u6570\u5b57\u3002\u8fd9\u79cd\u76f4\u63a5\u83b7\u53d6\u53c2\u6570\u7684\u65b9\u5f0f\u6709\u4e9b\u4e11\u964b\uff0c\u5207\u4e0d\u53ef\u4e3a\u4e86\u7f8e\u89c2\u5c06\u5176\u5199\u4e3a<\/p>\n
(interactive\n    "s\u8f93\u5165\u6587\u5b57\uff1a\n    n\u8f93\u5165\u6570\u5b57\uff1a")<\/code><\/pre>\n
\u4e0d\u8fc7\uff0c\u5199\u6210\u4ee5\u4e0b\u5f62\u5f0f\u662f\u53ef\u884c\u7684\uff0c\u5176\u4e2d\u7684 \/n<\/code> \u662f\u6362\u884c\u7b26\uff0c\u800c\u4e0d\u662f\u6570\u5b57\u793a\u610f\u7b26\uff0c\u5176\u540e\u7684 n<\/code> \u624d\u662f\u6570\u5b57\u793a\u610f\u7b26\u3002<\/p>\n
(interactive "s\u8f93\u5165\u6587\u5b57\uff1a\/nn\u8f93\u5165\u6570\u5b57\uff1a")<\/code><\/pre>\n
\u957f\u7f28\u5c0f\u8bd5<\/h2>\n
\u5018\u82e5\u4f60\u7ecf\u5e38\u7f16\u5199 C \u7a0b\u5e8f\uff0c\u5e94\u8be5\u77e5\u9053 C \u7a0b\u5e8f\u7684\u5934\u6587\u4ef6\u901a\u5e38\u8981\u52a0\u5165\u4e09\u6761\u9884\u5904\u7406\u6307\u4ee4\uff0c\u4ee5\u4fdd\u8bc1\u8be5\u6587\u4ef6\u5728 C \u7a0b\u5e8f\u7f16\u8bd1\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u88ab\u91cd\u590d\u8f7d\u5165\u3002\u4f8b\u5982\uff0c\u5728 foo.h \u6587\u4ef6\uff0c\u5176\u524d\u4e24\u884c\u901a\u5e38\u8981\u5199\u4e3a<\/p>\n
#ifndef FOO_H\n#define FOO_H<\/code><\/pre>\n
\u6700\u540e\u4e00\u884c\u8981\u5199\u4e3a<\/p>\n
#endif<\/code><\/pre>\n
\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a Emacs \u547d\u4ee4 c-header<\/code>\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u5b57\u7b26\u4e32\u53c2\u6570\uff0c\u81ea\u52a8\u751f\u6210\u4e0a\u8ff0\u7684\u9884\u5904\u7406\u6267\u884c\u3002<\/p>\n
(defun c-header (name)\n    "\u521d\u59cb\u5316 C \u7a0b\u5e8f\u5934\u6587\u4ef6\u3002"\n    (interactive "s\u5934\u6587\u4ef6\u540d: ")\n    (insert (format "#ifndef %s_H\/n" (upcase name)))\n    (insert (format "#define %s_H\/n\/n" (upcase name)))\n    (insert "#endif"))<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u4f7f\u7528\u7684 upcase<\/code> \u51fd\u6570\uff0c\u53ef\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u5c0f\u5199\u5b57\u7b26\u8f6c\u6362\u4e3a\u5927\u5199\u3002<\/p>\n
\u5f53 c-header<\/code> \u5b9a\u4e49\u751f\u6548\u540e\uff0c\u6267\u884c M-x c-header RET foo_bar RET<\/code> \u4fbf\u53ef\u5728\u7f13\u51b2\u533a\u5185\u81ea\u52a8\u63d2\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
#ifndef FOO_BAR_H\n#define FOO_BAR_H\n\n#endif<\/code><\/pre>\n
\u53d8\u91cf<\/h2>\n
\u5584\u4e8e\u7f16\u7a0b\u7684\u4f60\uff0c\u60f3\u5fc5\u5df2\u7ecf\u654f\u9510\u7684\u89c9\u5bdf\u5230\u4e0a\u4e00\u8282\u5b9a\u4e49\u7684 c-header<\/code> \u51fd\u6570\u662f\u4f4e\u6548\u7684\uff0c\u5b83\u5bf9 upcase<\/code> \u8868\u8fbe\u5f0f\u8fdb\u884c\u4e86\u91cd\u590d\u6c42\u503c\u3002\u6211\u4eec\u53ef\u4ee5\u7528\u4e00\u4e2a\u53d8\u91cf\u4fdd\u5b58 upcase<\/code> \u7684\u7ed3\u679c\uff0c\u7136\u540e\u91cd\u590d\u4f7f\u7528\u8be5\u53d8\u91cf\uff0c\u4fbf\u53ef\u63d0\u9ad8 c-header<\/code> \u7684\u6027\u80fd\u3002\u60f3\u5fc5\u4f60\u8fd8\u6ca1\u6709\u5fd8\u8bb0 setq<\/code>\u3002<\/p>\n
(defun c-header (name)\n    "\u521d\u59cb\u5316 C \u7a0b\u5e8f\u5934\u6587\u4ef6\u3002"\n    (interactive "s\u5934\u6587\u4ef6\u540d: ")\n    (setq name (upcase name))\n    (insert (format "#ifndef %s_H\/n" name))\n    (insert (format "#define %s_H\/n\/n" name))\n    (insert "#endif"))<\/code><\/pre>\n
let \u8868\u8fbe\u5f0f<\/h2>\n
\u5728 Elisp \u8bed\u8a00\u4e2d\uff0c\u9664\u4e86\u51fd\u6570\u7684\u53c2\u6570\uff0c\u5176\u4ed6\u53d8\u91cf\u9ed8\u8ba4\u662f\u5168\u5c40\u53d8\u91cf\u3002\u8fd9\u4e00\u70b9\u4e5f\u8bb8\u4e0e\u4f60\u6240\u719f\u6089\u7684\u90a3\u4e9b\u7f16\u7a0b\u8bed\u8a00\u4e0d\u540c\uff0c\u800c\u4e14\u60f3\u5fc5\u4f60\u4e5f\u6e05\u695a\u5168\u5c40\u53d8\u91cf\u7684\u5371\u9669\uff0c\u5b83\u4f1a\u7ed9\u7a0b\u5e8f\u5e26\u6765\u4e0d\u786e\u5b9a\u6027\u3002\u4f8b\u5982<\/p>\n
(defun foo ()\n    (setq bar 3)\n    (message (format "%d" bar)))\n\n(foo) ;; \u663e\u793a \u201c3\u201d\n(message "%d" bar) ;; \u663e\u793a "3"<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u5b9a\u4e49\u4e86\u51fd\u6570 foo<\/code>\uff0c\u7136\u540e\u5bf9 foo<\/code> \u6c42\u503c\uff0c\u7ee7\u800c\u5728\u5fae\u7f13\u51b2\u533a\u6253\u5370\u5728 foo<\/code> \u5185\u90e8\u5b9a\u4e49\u7684\u53d8\u91cf bar<\/code> \u7684\u503c 3<\/code>\u3002\u4f60\u5e94\u8be5\u53d1\u73b0\u4e86\u8be1\u5f02\u4e4b\u5904\uff0c\u5373\u5728\u51fd\u6570\u5185\u90e8\u5b9a\u4e49\u7684\u53d8\u91cf\uff0c\u7adf\u7136\u53ef\u4ee5\u5728\u51fd\u6570\u5916\u90e8\u8bbf\u95ee\uff0c\u539f\u56e0\u5728\u4e8e bar<\/code> \u662f\u5168\u5c40\u53d8\u91cf\u3002<\/p>\n
\u53e6\u5916\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cmessage<\/code> \u662f\u4e00\u4e2a\u53ef\u4ee5\u5728\u5fae\u7f13\u51b2\u533a\u663e\u793a\u5185\u5bb9\u7684\u51fd\u6570\uff0c\u5b83\u6bd4\u4e4b\u524d\u591a\u6b21\u7528\u8fc7\u7684 princ<\/code> \u66f4\u9002\u5408\u505a\u8fd9\u4ef6\u4e8b\uff0c\u56e0\u4e3a\u7528\u540e\u8005\u5728\u5fae\u7f13\u51b2\u533a\u663e\u793a\u4fe1\u606f\u65f6\uff0cEmacs \u4f1a\u5c06 princ<\/code> \u81ea\u8eab\u7684\u6c42\u503c\u7ed3\u679c\u4e5f\u663e\u793a\u5728\u5fae\u7f13\u51b2\u533a\uff0c\u5bfc\u81f4\u4fe1\u606f\u91cd\u590d\u663e\u793a\u3002<\/p>\n
\u9664\u4e86\u5c06\u53d8\u91cf\u4f5c\u4e3a\u51fd\u6570\u7684\u53c2\u6570\u5916\uff0c\u6709\u4e00\u79cd\u529e\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u5c40\u90e8\u53d8\u91cf\uff0c\u5373 let<\/code> \u8868\u8fbe\u5f0f\u3002\u4f8b\u5982\uff0c\u53ef\u5c06\u4e0a\u8ff0\u51fd\u6570 foo<\/code> \u91cd\u65b0\u5b9a\u4e49\u4e3a<\/p>\n
(defun foo ()\n    (let ((n 3))\n    (message "%d" n)))<\/code><\/pre>\n
\u82e5\u8bd5\u56fe\u5728 foo<\/code> \u5916\u90e8\u8bbf\u95ee\u53d8\u91cf n<\/code> \u7684\u503c\uff0cEmacs \u4fbf\u4f1a\u62b1\u6028 n<\/code> \u662f\u65e0\u6548\u53d8\u91cf\u3002<\/p>\n
let<\/code> \u8868\u8fbe\u5f0f\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a\u5c40\u90e8\u53d8\u91cf\uff0c\u4f46\u662f\u9700\u8981\u6ce8\u610f\uff0c\u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\u7684\u4ee3\u7801\u5fc5\u987b\u5728 let<\/code> \u8868\u8fbe\u5f0f\u5185\u3002\u4f8b\u5982<\/p>\n
(let ((a "Hello")\n      (b 3.1415926))\n    (message "%s %f" a b))<\/code><\/pre>\n
\u5b9a\u4f4d\u5149\u6807<\/h2>\n
goto-char<\/code> \u51fd\u6570\u53ef\u5c06\u5149\u6807\u5b9a\u4f4d\u5728\u6307\u5b9a\u4f4d\u7f6e\u3002point<\/code> \u51fd\u6570\u53ef\u4ee5\u83b7\u53d6\u5f53\u524d\u7684\u5149\u6807\u4f4d\u7f6e\u3002\u57fa\u4e8e\u8fd9\u4e24\u4e2a\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba9 c-header<\/code> \u66f4\u597d\u7528\u4e00\u4e9b\uff0c\u53ef\u4ee5\u8ba9\u5b83\u5728\u5b8c\u6210\u7b2c\u4e09\u6761\u9884\u5904\u7406\u6307\u4ee4 #endif<\/code> \u7684\u63d2\u5165\u4e4b\u540e\uff0c\u5c06\u5149\u6807\u5b9a\u4f4d\u5230\u8be5\u9884\u5904\u7406\u6307\u4ee4\u4e4b\u524d\uff0c\u5373\u5c06\u5149\u6807\u5b9a\u4f4d\u5728\u4ee5\u4e0b\u4ee3\u7801\u7684 \u258c<\/code> \u6240\u793a\u4f4d\u7f6e\u3002<\/p>\n
#ifndef FOO_BAR_H\n#define FOO_BAR_H\n\u258c\n#endif<\/code><\/pre>\n
\u4ee5\u4e0b\u4ee3\u7801\u91cd\u65b0\u5b9a\u4e49 c-header<\/code>\u3002<\/p>\n
(defun c-header (name)\n    "\u521d\u59cb\u5316 C \u7a0b\u5e8f\u5934\u6587\u4ef6\u3002"\n    (interactive "s\u5934\u6587\u4ef6\u540d: ")\n    (setq name (upcase name))\n    (insert (format "#ifndef %s_H\/n" name))\n    (insert (format "#define %s_H\/n" name))\n    (let ((a "\/n#endif"))\n        (insert a)\n        (goto-char (- (point) (length a)))))<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u6240\u7528\u7684 length<\/code> \u51fd\u6570\uff0c\u7528\u4e8e\u8ba1\u7b97\u5b57\u7b26\u4e32\u957f\u5ea6\u3002\u8868\u8fbe\u5f0f (- (point) (length a))<\/code>\uff0c\u662f\u7528 (point)<\/code> \u51cf\u53bb (length a)<\/code>\u3002\u5728 Elisp \u91cc\uff0c\u50cf +-*\/<\/code> \u8fd9\u4e9b\u6570\u503c\u8fd0\u7b97\u7b26\uff0c\u5b83\u4eec\u90fd\u662f\u51fd\u6570\uff0c\u5fc5\u987b\u50cf Elisp \u51fd\u6570\u90a3\u6837\u4f7f\u7528\u3002\u4f8b\u5982<\/p>\n
(+ 1 2) ;; \u7ed3\u679c\u4e3a 3\n(- 1 2) ;; \u7ed3\u679c\u4e3a -1\n(* 3 4) ;; \u7ed3\u679c\u4e3a 12\n(+ 1 (\/ 6 3)) ;; \u7ed3\u679c\u4e3a 3<\/code><\/pre>\n
\u4e5f\u8bb8\u4f60\u4e0d\u4e60\u60ef\u4e0a\u8ff0\u7684\u524d\u7f00\u5f62\u5f0f\u7684\u6570\u503c\u8fd0\u7b97\u8868\u8fbe\u5f0f\uff0c\u66f4\u4e60\u60ef\u4f20\u7edf\u7684\u4e2d\u7f00\u8868\u8fbe\u5f0f\uff0c\u4f8b\u5982 (1 + 3 * 4)<\/code>\u3002\u7136\u800c\uff0c\u51e1\u4e8b\u6709\u5f0a\u5fc5\u6709\u5229\u3002\u6211\u4eec\u4e4b\u6240\u4ee5\u80fd\u591f\u5728\u51fd\u6570\u540d\u4e2d\u4f7f\u7528 -<\/code>\uff0c\u4f8b\u5982 foo-bar<\/code>\uff0c\u6b63\u662f\u56e0\u4e3a Emacs \u5e76\u4e0d\u4f1a\u5c06\u8fd9\u6837\u7684\u51fd\u6570\u540d\u7406\u89e3\u4e3a foo<\/code> \u51cf\u53bb bar<\/code>\u3002\u4f60\u53ef\u4ee5\u5728\u51fd\u6570\u7684\u540d\u5b57\u4e2d\u4f7f\u7528\u5f88\u591a\u7279\u6b8a\u7b26\u53f7\uff0c\u9664\u4e86 +-*\/<\/code>\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 ?^&*$@<\/code> \u7b49\u7b26\u53f7\u3002<\/p>\n
goto-char<\/code> \u57fa\u4e8e\u7edd\u5bf9\u4f4d\u7f6e\u5b9a\u4f4d\u5149\u6807\uff0c\u4f8b\u5982\u82e5\u7f13\u51b2\u533a\u5171\u6709 100 \u4e2a\u5b57\u7b26\uff0c\u800c goto-char<\/code> \u7684\u53c2\u6570\u662f 95\uff0c\u5219 goto-char<\/code> \u4fbf\u5c06\u5149\u6807\u5b9a\u4f4d\u5728\u7b2c 95 \u4e2a\u5b57\u7b26\u6240\u5728\u7684\u4f4d\u7f6e\u3002Emacs \u4e5f\u63d0\u4f9b\u4e86\u57fa\u4e8e\u76f8\u5bf9\u4f4d\u7f6e\u5b9a\u4f4d\u5149\u6807\u7684\u51fd\u6570\uff0c\u5373 forward-char<\/code> \u4e0e backward-char<\/code>\uff0c\u5206\u522b\u7528\u4e8e\u5411\u524d\u548c\u5411\u540e\u79fb\u52a8\u5149\u6807\u3002\u8fd9\u91cc\u6240\u8c13\u7684\u5411\u524d\u79fb\u52a8\u5149\u6807\uff0c\u542b\u4e49\u662f\u5411\u7f13\u51b2\u533a\u5c3e\u90e8\u79fb\u52a8\u5149\u6807\uff0c\u800c\u5411\u540e\u79fb\u52a8\u5149\u6807\uff0c\u542b\u4e49\u662f\u5411\u7f13\u51b2\u533a\u9996\u90e8\u79fb\u52a8\u5149\u6807\u3002\u6211\u4eec\u53ef\u4ee5\u7528 backward-char<\/code> \u5c06\u4e0a\u8ff0\u7684 c-header<\/code> \u51fd\u6570\u5b9a\u4e49\u4e2d\u7684 let<\/code> \u8868\u8fbe\u5f0f\u7b80\u5316\u4e3a<\/p>\n
(let ((a "\/n#endif"))\n    (insert a)\n    (backward-char (length a)))<\/code><\/pre>\n
\u603b\u7ed3<\/h2>\n
\u901a\u8fc7\u4eb2\u624b\u7f16\u5199\u4e00\u4e2a\u53ef\u4f5c\u4e3a\u547d\u4ee4\u4f7f\u7528\u7684 Elisp \u51fd\u6570\uff0c\u4f60\u4e5f\u8bb8\u5df2\u7ecf\u611f\u53d7\u5230\u4e86\uff0c\u5728 Emacs \u6734\u7d20\u7684\u8868\u8c61\u80cc\u540e\u9690\u85cf\u7740\u4e00\u80a1\u795e\u79d8\u4e14\u5de8\u5927\u7684\u529b\u91cf\uff0c\u72b9\u5982\u53ef\u7f1a\u82cd\u9f99\u7684\u957f\u7f28\u3002<\/p>\n
Emacs \u7684\u795e\u79d8\u529b\u91cf\u7531 C \u8bed\u8a00\u5b9e\u73b0\u7684\u6587\u672c\u7f16\u8f91\u5668\u6838\u5fc3\u4ee5\u53ca\u540c\u6837\u4ee5 C \u8bed\u8a00\u5b9e\u73b0 Elisp \u8bed\u8a00\u7684\u89e3\u91ca\u5668\u6784\u6210\u3002Emacs \u7684\u5916\u56f4\u90e8\u5206\uff0c\u662f\u6211\u4eec\u6700\u4e3a\u5e38\u7528\u7684\u90e8\u5206\uff0c\u53ef\u79f0\u4e3a\u5e94\u7528\u5c42\uff0c\u4e3b\u8981\u7531 Elisp \u8bed\u8a00\u5b9e\u73b0\u3002Emacs \u7528\u6237\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528 Elisp \u8bed\u8a00\u5728 Emacs \u5e94\u7528\u5c42\u9762\u7f16\u5199\u7a0b\u5e8f\uff0c\u901a\u8fc7\u5b83\u4eec\u5b8c\u6210\u590d\u6742\u7684\u6587\u5b57\u7f16\u8f91\u5de5\u4f5c\uff0c\u4ea6\u53ef\u5c06\u8fd9\u4e9b\u7a0b\u5e8f\u4e0e\u4ed6\u4eba\u5171\u4eab\uff0c\u4ea6\u5373 Emacs \u4e0d\u4ec5\u662f\u4e00\u53f0\u8ba1\u7b97\u673a\uff0c\u4e5f\u662f\u4e00\u4e2a\u5b8c\u5907\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5982\u540c\u5b83\u7684\u5148\u7956 Lisp \u673a\uff0c\u800c\u4f60\u53ef\u4ee5\u662f\u5b83\u7684\u7528\u6237\uff0c\u4e5f\u53ef\u4ee5\u662f\u5b83\u7684\u5f00\u53d1\u8005\u3002<\/p>\n
\u5728 Emacs \u91cc\uff0c\u6211\u7ecf\u5e38\u80fd\u611f\u53d7\u5230\u8fd9\u6837\u4e00\u5e45\u753b\u9762\uff0c\u4e00\u4e2a\u4eba\u51fa\u8d70\u4e86\u534a\u751f\uff0c\u5f52\u6765\u65f6\u4ecd\u662f\u5c11\u5e74\u3002<\/p>\n
=> \u4e0b\u4e00\u7bc7<\/strong>\uff1aEmacs\uff1a\u6211\u66fe\u4e3a\u4f60\u7559\u4e0b\u9000\u8def\u2026\u2026<\/a><\/p><\/blockquote>\n
https:\/\/segmentfault.com\/a\/1190000046611939<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
=> \u4e0a\u4e00\u7bc7\uff1aEmacs \u7684\u4e00\u4e9b\u672c\u80fd \u524d\u8a00 \u8ba1\u7b97\u673a\u4e0a\u53e4\u65f6\u4ee3\uff0c\u5927\u6982\u662f\u4e0a\u4e2a\u4e16\u7eaa 70 \u5e74\u4ee3\u4e2d\u671f\uff0c\u6709\u4e00\u79cd\u8ba1\u7b97\u673a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10020815","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10020815"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10020815\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10020815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10020815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10020815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}