20081125

org-mode in Emacs, some feature advanced

- Column View

可以在整个文件中使用和定制。如果没有中文(也许是因为不是等宽字体?),把org显示为表格,还是挺整齐的。

可以针对某个子树定制,详见下面的例子。
提供如下功能:字段值可选;可以针对子树中的字段值选是或否,自动判定在父树中显示为[ ][X][-]中的一个;自动把子树中的花费时间字段累加;
字段显示宽度可定制。

例子:

* test
:PROPERTIES:
:COLUMNS: %10a %10b{X} %15Time_Spent{:}
:a_ALL: a11 a12 a13
:b_ALL: "[X]" "[ ]"
:END:
** test1
:PROPERTIES:
:a: a11
:b: [-]
:END:
*** test11
:PROPERTIES:
:a: a12
:b: [X]
:Time_Spent: 1:20
:END:
*** test12
:PROPERTIES:
:a: a13
:b: [ ]
:Time_Spent: 2:20
:END:

快捷键:
C-c C-x p property
C-c C-x C-c column view (q for quit,注意输入法不应激活,且光标在view上)


- sparse tree
这个名字起得真是差。我记住过不下三次了,每次都会忘掉这是什么。
我猜,这是实现手段。
这种命名方法差的原因是违背了软件工程的基本原则之一,应该用动机,而不是实现方法命名。
sparse tree 是用来匹配tag的。

当匹配tag的时候,默认会把子树中的所有tag也进行匹配,即如果子树中有匹配的tag,它的父树也会被认为匹配。
这称为 Property inheritance。

- radio targets
一旦声明一段文字为target,自动广播这个target,意思是在文件中任何一处出现相同的文字,都会自动变成链接,并指向这个target。
声明的方法是 用三个尖括号 括住文字。不区分大小写,中文适用。

在写作中刷新radio targets列表的方法是 光标停在target上,C-c C-c。

- 辅助完成链接
键入 [[*something ,然后按M-tab,自动完成目标。
事实上,这是不可能的。在大多数操作系统上,M-tab都被设置为系统键,切换窗口用了。
这个快键键对应的命令是:org-complete。

- 返回前一位置
C-c &

参考:
Emacs Org-mode - a system for note-taking and project planning,
[http://www.youtube.com/watch?v=oJTwQvgfgMM&ytsession=kBFqzqAeLwpbvhDgoYCwCkUVpE051DUGUDq66nIOTtXeYLQ05XCkoAEf5U0KflXnn1zDUhpCHfcFdPEkgwq8MutV-M6SlFDSerN267dZInHazdyWszCqnyIzpCjUG2XOcDknlFIj3tY3Leb6DwHA6gdRRHSa83Lt]
org tutorial,[http://orgmode.org/worg/org-tutorials/org-column-view-tutorial.php]

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