100 lines
3.1 KiB
EmacsLisp
100 lines
3.1 KiB
EmacsLisp
;;; company-ispell.el --- company-mode completion backend using Ispell -*- lexical-binding: t -*-
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;; Copyright (C) 2009-2011, 2013-2016, 2018, 2021, 2023 Free Software Foundation, Inc.
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;; Author: Nikolaj Schumacher
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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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;;
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;;; Code:
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(require 'company)
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(require 'cl-lib)
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(require 'ispell)
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(defgroup company-ispell nil
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"Completion backend using Ispell."
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:group 'company)
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(defun company--set-dictionary (symbol value)
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(set-default-toplevel-value symbol value)
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(company-cache-delete 'ispell-candidates))
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(defcustom company-ispell-dictionary nil
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"Dictionary to use for `company-ispell'.
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If nil, use `ispell-complete-word-dict' or `ispell-alternate-dictionary'."
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:type '(choice (const :tag "default (nil)" nil)
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(file :tag "dictionary" t))
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:set #'company--set-dictionary)
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(defvar company-ispell-available 'unknown)
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(defun company-ispell-available ()
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(when (eq company-ispell-available 'unknown)
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(condition-case err
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(progn
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(ispell-lookup-words "WHATEVER")
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(setq company-ispell-available t))
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(error
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(message "Company-Ispell: %s" (error-message-string err))
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(setq company-ispell-available nil))))
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company-ispell-available)
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(defun company--ispell-dict ()
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"Determine which dictionary to use."
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(let ((dict (or company-ispell-dictionary
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ispell-complete-word-dict
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ispell-alternate-dictionary)))
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(when dict
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(expand-file-name dict))))
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;;;###autoload
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(defun company-ispell (command &optional arg &rest _ignored)
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"`company-mode' completion backend using Ispell."
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(interactive (list 'interactive))
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(cl-case command
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(interactive (company-begin-backend 'company-ispell))
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(prefix (when (company-ispell-available)
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(list
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(company-grab-word)
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(company-grab-word-suffix))))
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(candidates
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(let* ((dict (company--ispell-dict))
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(all-words
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(company-cache-fetch 'ispell-candidates
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(lambda () (ispell-lookup-words "" dict))
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:check-tag dict))
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(completion-ignore-case t))
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(if (string-empty-p arg)
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;; Small optimization.
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all-words
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(company-substitute-prefix
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arg
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;; Work around issue #284.
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(all-completions arg all-words)))))
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(kind 'text)
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(no-cache t)
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(sorted t)
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(ignore-case t)))
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(provide 'company-ispell)
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;;; company-ispell.el ends here
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