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Increment and decrement numbers in Emacs
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Evil Numbers

  • Increment / Decrement binary, octal, decimal and hex literals
  • works like C-a/C-x in vim, i.e. searches for number up to eol and then increments or decrements and keep zero padding up (unlike in vim)
  • When a region is active, as in evil’s visual mode, all the numbers within that region will be incremented/decremented (unlike in vim)

Detected Literals

  • binary, e.g. 0b0101, 0B0101
  • octal, e.g. 0o755, 0O700
  • hexadecimal, e.g. 0xDEADBEEF, 0XCAFE

Install

Put in load-path, (require 'evil-numbers) and bind, for example:

(global-set-key (kbd "C-c +") 'evil-numbers/inc-at-pt)
(global-set-key (kbd "C-c -") 'evil-numbers/dec-at-pt)

or only in evil’s normal state:

(define-key evil-normal-state-map (kbd "C-c +") 'evil-numbers/inc-at-pt)
(define-key evil-normal-state-map (kbd "C-c -") 'evil-numbers/dec-at-pt)

For window system users the keypad + and - present an alternative that can be directly bound without shadowing the regular + and -:

(define-key evil-normal-state-map (kbd "<kp-add>") 'evil-numbers/inc-at-pt)
(define-key evil-normal-state-map (kbd "<kp-subtract>") 'evil-numbers/dec-at-pt)

Usage

Position cursor on literal and play with your numbers!

Known Bugs

See http://github.com/cofi/evil-numbers/issues

Contributors

  • Matthew Fidler <matthew.fidler@gmail.com>
  • Michael Markert <markert.michael@gmail.com>
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