leo-editor 列操作模式命令 rectangle

英文不难，就不翻译了。

The following is from LeoDocs.leo. Selecting some text with mouse or keyboard arrow key, then between the first cursor and the end cursor is the columns that being selected.

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… _Emacs rectangle commands: http://www.gnu.org/software/emacs/manual/html_node/emacs/Rectangles.html

The following commands emulate the Emacs rectangle commands_::

rectangle-clear
rectangle-delete

rectangle-open
rectangle-close

rectangle-kill
rectangle-yank

rectangle-string

Given::

I'm really glad the docs are being updated. I know that's a
monumental task. I only use a fraction of Leo's commands, mostly
because I don't even know what they're supposed to accomplish. A few
examples:

Placing the cursor immediately before the first “I”, holding shift and moving it to immediately before the wordexamples selects a zero width rectangle from the beginning to the end of the selection (zero width because the selection starts and ends in the same column. Then running rectangle-string [largo]<space><enter> yields::

[largo] I’m really glad the docs are being updated. I know that’s a
[largo] monumental task. I only use a fraction of Leo’s commands, mostly
[largo] because I don’t even know what they’re supposed to accomplish. A few
[largo] examples: