Difference between revisions of "Registers"

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(There are 62 registers, each with a single character for a name:)
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Emacs registers are compartments where you can save text, rectangles, positions, and other things for later use. Once you save text or a rectangle in a register, you can copy it into the buffer once, or many times; once you save a position in a register, you can jump back to that position once, or many times.
 
Emacs registers are compartments where you can save text, rectangles, positions, and other things for later use. Once you save text or a rectangle in a register, you can copy it into the buffer once, or many times; once you save a position in a register, you can jump back to that position once, or many times.
  
=== Naming convention ===
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== Naming convention ==
 
There are 62 registers, each with a single character for a name:
 
There are 62 registers, each with a single character for a name:
  
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* from 0 to 9
 
* from 0 to 9
  
=== Functions ===
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== Functions ==
 
A register can store a position, a piece of text, a rectangle, a number, a window configuration, or a file name, but only one thing at any given time. Whatever you store in a register remains there until you store something else in that register.  
 
A register can store a position, a piece of text, a rectangle, a number, a window configuration, or a file name, but only one thing at any given time. Whatever you store in a register remains there until you store something else in that register.  
  
=== How to use ===
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== How to use ==
 
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Revision as of 10:37, 28 March 2013

Emacs registers are compartments where you can save text, rectangles, positions, and other things for later use. Once you save text or a rectangle in a register, you can copy it into the buffer once, or many times; once you save a position in a register, you can jump back to that position once, or many times.

Naming convention

There are 62 registers, each with a single character for a name:

  • from a to z
  • from A to Z, different from a to z
  • from 0 to 9

Functions

A register can store a position, a piece of text, a rectangle, a number, a window configuration, or a file name, but only one thing at any given time. Whatever you store in a register remains there until you store something else in that register.

How to use

Type How to save How to use Other useful command
Position C-x r <SPC> r jump: C-x r j r
Text C-x r s r insert: C-x r i r m-x append-toregister <RET> r; m-x prepend-to-register <RET> r
Rectangle C-x r r r insert: C-x r i r
Window Config C-x r w r restore: C-x r j r save all frame's window: C-x r f r
Number C-u number C-x r n r insert: C-x r i r increment: C-x r + r
File (set-register ?z '(fine . name)) jump: C-x r j r
  • To see what register r contains, use M-x view-register

Bookmark

Bookmarks can be thought as register with a long name and surviving between Emacs session.