I have some trouble in using org-mode. I want create a table in org-mode like this:
| operator | use |
|----------+-------------|
| | | expr | expr |
but when I press TAB, the table changed like this:
| operator | use | | |
|----------+-----+------+------|
| | | expr | expr |.
How to avoid it?
To insert a vertical bar into a table field, use \vert or, inside a word abc\vert{}def.
Source: Org-mode manual: The built-in table editor.
If \vert is not automatically converted to |, call org-toggle-pretty-entities, per:
C-c C-x \
Toggle display of entities as UTF-8 characters. This does not change the buffer content which remains plain ASCII, but it overlays the UTF-8 character for display purposes only.
Source: Org-mode manual: Special symbols
The function org-toggle-pretty-entities was introduced in version 7.01. Call org-version and upgrade Org-mode if necessary.
Using some unicode seems to work relatively well. I got these 2 characters to work: ¦ ǀ
There is also this one: ∣ which just gave a unicode box. Your milage will vary.
sindikat's answer above is more correct, but if you want a vertical bar that looks pretty in your org source file, and you use UTF-8 (or similar) then this is an option.
If you just want to insert a new column, just type 'M-S right'.
来源：https://stackoverflow.com/questions/11876048/how-to-insert-in-org-mode-table