89 lines
3.1 KiB
EmacsLisp
89 lines
3.1 KiB
EmacsLisp
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;;; use-package-delight.el --- Support for the :delight keyword -*- lexical-binding: t; -*-
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;; Copyright (C) 2012-2022 Free Software Foundation, Inc.
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;; Author: John Wiegley <johnw@newartisans.com>
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;; Maintainer: John Wiegley <johnw@newartisans.com>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Provides support for the :delight keyword, which is made available
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;; by default by requiring `use-package'. Using it requires the
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;; `delight' package to be installed (available on GNU ELPA).
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;;
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;; See the `use-package' info manual for more information.
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;;; Code:
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(require 'use-package-core)
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(defun use-package-normalize-delight (name args)
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"Normalize ARGS for a single call to `delight'."
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(when (eq :eval (car args))
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;; Handle likely common mistake.
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(use-package-error ":delight mode line constructs must be quoted"))
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(cond ((and (= (length args) 1)
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(use-package-non-nil-symbolp (car args)))
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`(,(nth 0 args) nil ,name))
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((= (length args) 2)
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`(,(nth 0 args) ,(nth 1 args) ,name))
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((= (length args) 3)
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args)
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(t
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(use-package-error
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":delight expects `delight' arguments or a list of them"))))
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;;;###autoload
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(defun use-package-normalize/:delight (name _keyword args)
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"Normalize arguments to delight."
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(cond ((null args)
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`((,(use-package-as-mode name) nil ,name)))
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((and (= (length args) 1)
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(use-package-non-nil-symbolp (car args)))
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`((,(car args) nil ,name)))
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((and (= (length args) 1)
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(stringp (car args)))
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`((,(use-package-as-mode name) ,(car args) ,name)))
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((and (= (length args) 1)
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(listp (car args))
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(eq 'quote (caar args)))
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`((,(use-package-as-mode name) ,@(cdar args) ,name)))
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((and (= (length args) 2)
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(listp (nth 1 args))
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(eq 'quote (car (nth 1 args))))
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`((,(car args) ,@(cdr (nth 1 args)) ,name)))
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(t (mapcar
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(apply-partially #'use-package-normalize-delight name)
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(if (use-package-non-nil-symbolp (car args))
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(list args)
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args)))))
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;;;###autoload
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(defun use-package-handler/:delight (name _keyword args rest state)
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(let ((body (use-package-process-keywords name rest state)))
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(use-package-concat
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body
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`((if (fboundp 'delight)
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(delight '(,@args)))))))
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(add-to-list 'use-package-keywords :delight t)
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(provide 'use-package-delight)
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;;; use-package-delight.el ends here
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