Files
.emacs.d/modules/text-editing/siren-safe-change-case.el
Jim Myhrberg fe6a4e7ce5 fix(elisp): add lexical-binding comment to all files to suppress new Emacs 31 warnings
I've set `lexical-binding` to `nil` in all Emacs Lisp files to suppress
the warnings introduced in Emacs 31 requiring all elisp files to have a
`lexical-binding` comment.

This retains the default behavior of dynamic binding when no
`lexical-binding` comment is present. With it set to `t` across the
board, various things break, and fixing those is a task for another day.
2025-06-29 12:23:03 +01:00

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EmacsLisp

;;; siren-safe-change-case.el --- jimeh's Emacs Siren: change-case -*- lexical-binding: nil; -*-
;;; Commentary:
;; Set strict/safer case changing functions to C-x C-u and C-x C-l which ONLY
;; perform case modifications when region is active.
;;; Code:
(defun downcase-region-only (beg end &rest args)
"Only downcase if region (BEG END) is active.
Avoids accidental downcase when region is not active. Passes all
additional ARGS passed along to `downcase-region'."
(interactive "r")
(when (region-active-p)
(apply #'downcase-region beg end args)))
(defun upcase-region-only (beg end &rest args)
"Only upcase if region (BEG END) is active.
Avoids accidental upcase when region is not active. Passes all
additional ARGS passed along to `upcase-region'."
(interactive "r")
(when (region-active-p)
(apply #'upcase-region beg end args)))
(siren-general-define-key
"C-x C-l" 'downcase-region-only
"C-x C-u" 'upcase-region-only)
(provide 'siren-safe-change-case)
;;; siren-safe-change-case.el ends here