初始版（2014年2月6日）：第一份工作草案。
编辑（2014年2月18日）：修订了功能lawlist-toggle-block-visibility，以便它包含恰当的if / then / else语句 - 即，如果该行包含所需的开始区域正则表达式，则块可见性将被切换，否则会出现一个消息说抱歉......。增加了与代码折叠相关的线程引用。将错误消息修改为引用点而不是行。
下面的答案源代码也存储在Github上：https://github.com/lawlist/lawlist-org-block-toggle/blob/master/lawlist-org-block-toggle.el
关于一个相关问题（即完全隐藏包括单词:PROPERTIES:在内的属性抽屉），请参阅以下线程：在org-mode中完全隐藏: PROPERTIES：抽屉
关于半相关问题（即创建可代码折叠的自定义块），还请参见：https://tex.stackexchange.com/a/161196/26911
此解决方案已在Emacs Trunk的相当新版本（于2014年1月19日构建）中进行了测试，其中包含org-mode版本8.2.5c。由于：PROPERTIES：抽屉通过：END：折叠与脚注和html块不同，因此该解决方案认为脚注和/或html代码块不会出现在该属性抽屉中。脚注可以出现在文本段落的任何位置，但不能在脚注内再有另一对方括号 - 因为此代码寻找第一个结束方括号才能标记折叠区域的结束。此代码认为#+BEGIN_HTML和#+END_HTML都将与左边距对齐。启动视图仍然以相同方式工作 - 例如，变量org-startup-folded和org-hide-block-startup。
修改
org-cycle-internal-local 可以启用 org-mode 中所有形式的折叠标签循环。我们只是修复了函数的分页以使其更易读，并添加了以下条件:
((eq org-cycle-subtree-status 'subtree) (org-show-subtree) (message "ALL") (setq org-cycle-subtree-status 'all))。交互式函数
org-cycle 仍然用于在各种折叠 / 展开视图之间进行标签循环。函数
lawlist-block-org-cycle-internal-local 是一个非交互式的支持函数，由
org-cycle 使用。解决方案中这两个
defalias 部分是使一切正常需要的。用户可以直接调用交互式函数来在标题或子标题的开头切换可见性，而不是使用标签循环：
M-x org-cycle RET
要直接切换脚注或 HTML 块的可见性，我们使用交互式函数
lawlist-toggle-block-visibility。将光标放在包含脚注开始或 HTML 块开始的行上，然后键入：
M-x lawlist-toggle-block-visibility RET
(require 'org)
(defalias 'org-cycle-hide-drawers 'lawlist-block-org-cycle-hide-drawers)
(defun lawlist-block-org-cycle-hide-drawers (state)
"Re-hide all drawers, footnotes or html blocks after a visibility state change."
(when
(and
(derived-mode-p 'org-mode)
(not (memq state '(overview folded contents))))
(save-excursion
(let* (
(globalp (memq state '(contents all)))
(beg (if globalp (point-min) (point)))
(end
(cond
(globalp
(point-max))
((eq state 'children)
(save-excursion (outline-next-heading) (point)))
(t (org-end-of-subtree t)) )))
(goto-char beg)
(while
(re-search-forward
".*\\[fn\\|^\\#\\+BEGIN_HTML.*$\\|^[ \t]*:PROPERTIES:[ \t]*$" end t)
(lawlist-org-flag t))))))
(defalias 'org-cycle-internal-local 'lawlist-block-org-cycle-internal-local)
(defun lawlist-block-org-cycle-internal-local ()
"Do the local cycling action."
(let ((goal-column 0) eoh eol eos has-children children-skipped struct)
(save-excursion
(if (org-at-item-p)
(progn
(beginning-of-line)
(setq struct (org-list-struct))
(setq eoh (point-at-eol))
(setq eos (org-list-get-item-end-before-blank (point) struct))
(setq has-children (org-list-has-child-p (point) struct)))
(org-back-to-heading)
(setq eoh (save-excursion (outline-end-of-heading) (point)))
(setq eos (save-excursion (1- (org-end-of-subtree t t))))
(setq has-children
(or
(save-excursion
(let ((level (funcall outline-level)))
(outline-next-heading)
(and
(org-at-heading-p t)
(> (funcall outline-level) level))))
(save-excursion
(org-list-search-forward (org-item-beginning-re) eos t)))))
(beginning-of-line 2)
(if (featurep 'xemacs)
(while
(and
(not (eobp))
(get-char-property (1- (point)) 'invisible))
(beginning-of-line 2))
(while
(and
(not (eobp))
(get-char-property (1- (point)) 'invisible))
(goto-char (next-single-char-property-change (point) 'invisible))
(and
(eolp)
(beginning-of-line 2))))
(setq eol (point)))
(cond
((= eos eoh)
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-pre-cycle-hook 'empty))
(org-unlogged-message "EMPTY ENTRY")
(setq org-cycle-subtree-status nil)
(save-excursion
(goto-char eos)
(outline-next-heading)
(if (outline-invisible-p)
(org-flag-heading nil))))
((and
(or
(>= eol eos)
(not (string-match "\\S-" (buffer-substring eol eos))))
(or
has-children
(not (setq children-skipped
org-cycle-skip-children-state-if-no-children))))
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-pre-cycle-hook 'children))
(if (org-at-item-p)
(org-list-set-item-visibility (point-at-bol) struct 'children)
(org-show-entry)
(org-with-limited-levels (show-children))
(when (eq org-cycle-include-plain-lists 'integrate)
(save-excursion
(org-back-to-heading)
(while (org-list-search-forward (org-item-beginning-re) eos t)
(beginning-of-line 1)
(let* (
(struct (org-list-struct))
(prevs (org-list-prevs-alist struct))
(end (org-list-get-bottom-point struct)))
(mapc (lambda (e) (org-list-set-item-visibility e struct 'folded))
(org-list-get-all-items (point) struct prevs))
(goto-char (if (< end eos) end eos)))))))
(org-unlogged-message "CHILDREN")
(save-excursion
(goto-char eos)
(outline-next-heading)
(if (outline-invisible-p)
(org-flag-heading nil)))
(setq org-cycle-subtree-status 'children)
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-cycle-hook 'children)))
((or
children-skipped
(and
(eq last-command this-command)
(eq org-cycle-subtree-status 'children)))
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-pre-cycle-hook 'subtree))
(outline-flag-region eoh eos nil)
(org-unlogged-message
(if children-skipped
"SUBTREE (NO CHILDREN)"
"SUBTREE"))
(setq org-cycle-subtree-status 'subtree)
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-cycle-hook 'subtree)))
((eq org-cycle-subtree-status 'subtree)
(org-show-subtree)
(message "ALL")
(setq org-cycle-subtree-status 'all))
(t
(run-hook-with-args 'org-pre-cycle-hook 'folded)
(outline-flag-region eoh eos t)
(org-unlogged-message "FOLDED")
(setq org-cycle-subtree-status 'folded)
(unless (org-before-first-heading-p)
(run-hook-with-args 'org-cycle-hook 'folded))))))
(defun lawlist-org-flag (flag)
"When FLAG is non-nil, hide any of the following: html code block;
footnote; or, the properties drawer. Otherwise make it visible."
(save-excursion
(beginning-of-line 1)
(cond
((looking-at ".*\\[fn")
(let* (
(begin (match-end 0))
end-footnote)
(if (re-search-forward "\\]"
(save-excursion (outline-next-heading) (point)) t)
(progn
(setq end-footnote (point))
(outline-flag-region begin end-footnote flag))
(user-error "Error beginning at point %s." begin))))
((looking-at "^\\#\\+BEGIN_HTML.*$\\|^[ \t]*:PROPERTIES:[ \t]*$")
(let* ((begin (match-end 0)))
(if (re-search-forward "^\\#\\+END_HTML.*$\\|^[ \t]*:END:"
(save-excursion (outline-next-heading) (point)) t)
(outline-flag-region begin (point-at-eol) flag)
(user-error "Error beginning at point %s." begin)))))))
(defun lawlist-toggle-block-visibility ()
"For this function to work, the cursor must be on the same line as the regexp."
(interactive)
(if
(save-excursion
(beginning-of-line 1)
(looking-at
".*\\[fn\\|^\\#\\+BEGIN_HTML.*$\\|^[ \t]*:PROPERTIES:[ \t]*$"))
(lawlist-org-flag (not (get-char-property (match-end 0) 'invisible)))
(message "Sorry, you are not on a line containing the beginning regexp.")))
].缩小到更确定的范围？例如，在[fn ::后面第一次出现的].，这意味着您不能在脚注内有第二对方括号。或者，也许我们可以说它将是第一个带有硬回车的行末尾的].？可能会有多于一行吗？例如，段落或更多，段落之间有空行？潜在的解决方案考虑到此脚注将不位于属性抽屉中，该抽屉将单独折叠。 - lawlist]表示脚注的结束。换句话说，我们采用您的第一个建议。 - incandescentman