Difference between revisions of "Registers"
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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 === | |
| − | + | register has a name of a single character. including: | |
| − | A | + | * 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 === | ||
{| class="wikitable" | {| class="wikitable" | ||
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| − | + | * To see what register r contains, use M-x view-register | |
== Bookmark == | == Bookmark == | ||
| − | [[Bookmark]] can be thought register with a long name and surviving between Emacs session. | + | [[Bookmark]] can be thought as register with a long name and surviving between Emacs session. |
[[Category:Text Editing]] | [[Category:Text Editing]] | ||
Revision as of 04:30, 30 March 2012
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
register has a name of a single character. including:
- 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 x |
| 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
Bookmark can be thought as register with a long name and surviving between Emacs session.