[elpa] externals/jinx 5b215b3b1c 1/2: Initial commit

[ELPA Syncer]

branch: externals/jinx
commit 5b215b3b1c7f1d97921021e762415accdf4451b2
Author: Daniel Mendler <mail@daniel-mendler.de>
Commit: Daniel Mendler <mail@daniel-mendler.de>

    Initial commit
---
 LICENSE    | 674 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 README.org |  77 +++++++
 jinx-mod.c | 153 ++++++++++++++
 jinx.el    | 618 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 1522 insertions(+)

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000000..f288702d2f
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.org b/README.org
new file mode 100644
index 0000000000..825e2b9534
--- /dev/null
+++ b/README.org
@@ -0,0 +1,77 @@
+#+title: Enchanted just-in-time spell checker
+#+author: Daniel Mendler
+#+language: en
+#+export_file_name: jinx.texi
+#+texinfo_dir_category: Emacs misc features
+#+texinfo_dir_title: Jinx: (jinx).
+#+texinfo_dir_desc: Enchanted just-in-time spell checker
+
+#+html: <a href="https://www.gnu.org/software/emacs/";><img alt="GNU Emacs" 
src="https://github.com/minad/corfu/blob/screenshots/emacs.svg?raw=true"/></a>
+#+html: <a href="https://elpa.gnu.org/packages/jinx.html";><img alt="GNU ELPA" 
src="https://elpa.gnu.org/packages/jinx.svg"/></a>
+#+html: <a href="https://elpa.gnu.org/devel/jinx.html";><img alt="GNU-devel 
ELPA" src="https://elpa.gnu.org/devel/jinx.svg"/></a>
+#+html: <a href="https://melpa.org/#/jinx";><img alt="MELPA" 
src="https://melpa.org/packages/jinx-badge.svg"/></a>
+#+html: <a href="https://stable.melpa.org/#/jinx";><img alt="MELPA Stable" 
src="https://stable.melpa.org/packages/jinx-badge.svg"/></a>
+
+Jinx provides just-in-time spell-checking checking via 
[[https://abiword.github.io/enchant/][libenchant]]. The package
+aims to achieve high performance and low resource usage, without impacting your
+editing experience. Overall Jinx should just work out of the box without much
+intervention.
+
+Jinx highlights misspellings lazily only in the visible area of the window. 
Jinx
+binds directly to the native libenchant API, such that process communication
+with a backend Aspell process can be avoided. Libenchant is widely used as
+spell-checking API by text editors and supports Nuspell, Hunspell, Aspell and a
+few lesser known backends. Jinx automatically compiles and loads the native
+module at startup. Libenchant must be available for compilation. If 
=pkg-config=
+is available it will be used to locate libenchant. On Debian or Ubuntu, install
+the packages =libenchant-2=, =libenchant-2-dev= and =pkg-config=.
+
+Jinx supports multiple languages in a buffer at the same time via the
+=jinx-languages= customization variable. It offers flexible settings to ignore
+misspellings via faces (=jinx-exclude-faces= and =jinx-include-faces=), regular
+expressions (=jinx-exclude-regexps=) and programmable predicates. Jinx comes
+preconfigured for the most important major modes.
+
+* Usage
+
+Jinx offers three autoloaded entry points , the modes =global-jinx-mode=,
+=jinx-mode= and the command =jinx-correct=. You can either enable 
=global-jinx-mode=
+or add =jinx-mode= to the hooks of the modes.
+
+#+begin_src emacs-lisp
+  (add-hook 'emacs-startup-hook #'global-jinx-mode)
+
+  (dolist (hook '(text-mode-hook prog-mode-hook conf-mode-hook))
+    (add-hook hook #'jinx-mode))
+#+end_src
+
+In order to correct misspellings bind =jinx-correct= to a convenient key in 
your
+configuration. Jinx is independent of the Ispell package, so you can reuse the
+binding =M-$= which is bound to =ispell-word= by default. When pressing =M-$=, 
Jinx
+offers correction suggestions for the misspelling next to point. If the prefix
+key =C-u= is pressed, the entire buffer is spell-checked.
+
+#+begin_src emacs-lisp
+  (keymap-global-set "<remap> <ispell-word>" #'jinx-correct)
+#+end_src
+
+* Alternatives
+
+The technique to spell-check only the visible region of the window was inspired
+by Campbell Barton's spell-fu package. Spell-fu maintains the dictionary itself
+via a hash table, which results in high memory usage for languages with 
compound
+words or inflected word forms. In Jinx we avoid the complexity of managing the
+dictionary and access the advanced spell-checker algorithms (affixation,
+compound words, etc.) directly via libenchant.
+
+Jinx offers a similar UI as Augusto Stoffel's jit-spell package and borrows
+ideas from it. Jit-spell uses Ispell process communication instead of a native
+API. It does not restrict the highlighting to the visible area. In my setup I
+observed an increase in load and latency as a consequence, in particular in
+combination with stealth locking and commands which trigger fontification
+eagerly like =consult-line= from my Consult package.
+
+* Contributions
+
+Since this package is part of [[https://elpa.gnu.org/packages/jinx.html][GNU 
ELPA]] contributions require a copyright
+assignment to the FSF.
diff --git a/jinx-mod.c b/jinx-mod.c
new file mode 100644
index 0000000000..c275bb3de6
--- /dev/null
+++ b/jinx-mod.c
@@ -0,0 +1,153 @@
+/* Jinx bindings to libenchant
+
+Copyright (C) 2023 Free Software Foundation, Inc.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <emacs-module.h>
+#include <enchant.h>
+#include <string.h>
+#include <glib.h>
+
+int plugin_is_GPL_compatible;
+
+static EnchantBroker* broker = 0;
+
+#define jinx_unused(var) _##var __attribute__((unused))
+
+static emacs_value jinx_str(emacs_env* env, const char* str) {
+    return env->make_string(env, str, strlen(str));
+}
+
+static emacs_value jinx_cons(emacs_env* env, emacs_value a, emacs_value b) {
+    return env->funcall(env, env->intern(env, "cons"), 2, (emacs_value[]){a, 
b});
+}
+
+static char* jinx_cstr(emacs_env* env, emacs_value val) {
+    ptrdiff_t size = 0;
+    if (!env->copy_string_contents(env, val, 0, &size))
+        return 0;
+    char* str = malloc(size);
+    if (!str) {
+        env->non_local_exit_signal(env,
+                                   env->intern (env, "memory-full"),
+                                   env->intern (env, "nil"));
+        return 0;
+    }
+    if (!env->copy_string_contents(env, val, str, &size)) {
+        free(str);
+        return 0;
+    }
+    return str;
+}
+
+static void jinx_defun(emacs_env* env, const char* name,
+                       ptrdiff_t min, ptrdiff_t max, void* fun) {
+    env->funcall(env, env->intern(env, "defalias"), 2,
+                 (emacs_value[]){
+                     env->intern(env, name),
+                     env->make_function(env, min, max, fun, 0, 0)
+                 });
+}
+
+static void jinx_free_dict(void* dict) {
+    enchant_broker_free_dict(broker, dict);
+}
+
+static emacs_value jinx_dict(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                             emacs_value args[], void* jinx_unused(data)) {
+    if (!broker)
+        broker = enchant_broker_init();
+    g_autofree char* str = jinx_cstr(env, args[0]);
+    EnchantDict* dict = str ? enchant_broker_request_dict(broker, str) : 0;
+    return dict
+        ? env->make_user_ptr(env, jinx_free_dict, dict)
+        : env->intern(env, "nil");
+}
+
+static void jinx_describe_cb(const char* const lang_tag,
+                             const char* const provider_name,
+                             const char* const jinx_unused(provider_desc),
+                             const char* const jinx_unused(provider_file),
+                             void* data) {
+    emacs_env* env = ((emacs_env**)data)[0];
+    ((emacs_value*)data)[1] = jinx_cons(env,
+                                        jinx_str(env, lang_tag),
+                                        jinx_str(env, provider_name));
+}
+
+static emacs_value jinx_describe(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                                 emacs_value args[], void* jinx_unused(data)) {
+    EnchantDict* dict = env->get_user_ptr(env, args[0]);
+    if (!dict)
+        return env->intern(env, "nil");
+    void* data[] = { env, 0 };
+    enchant_dict_describe(dict, jinx_describe_cb, data);
+    return data[1];
+}
+
+static emacs_value jinx_check(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                              emacs_value args[], void* jinx_unused(data)) {
+    g_autofree char* str = jinx_cstr(env, args[1]);
+    EnchantDict* dict = env->get_user_ptr(env, args[0]);
+    return env->intern(env, !str || !dict || enchant_dict_check(dict, str, -1)
+                       ? "nil" : "t");
+}
+
+static emacs_value jinx_add(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                            emacs_value args[], void* jinx_unused(data)) {
+    g_autofree char* str = jinx_cstr(env, args[1]);
+    EnchantDict* dict = env->get_user_ptr(env, args[0]);
+    if (str && dict)
+        enchant_dict_add(dict, str, -1);
+    return env->intern(env, "nil");
+}
+
+static emacs_value jinx_wordchars(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                                  emacs_value args[], void* jinx_unused(data)) 
{
+    EnchantDict* dict = env->get_user_ptr(env, args[0]);
+    return dict
+        ? jinx_str(env, enchant_dict_get_extra_word_characters(dict))
+        : env->intern(env, "nil");
+}
+
+static emacs_value jinx_suggest(emacs_env* env, ptrdiff_t jinx_unused(nargs),
+                                emacs_value args[], void* jinx_unused(data)) {
+    g_autofree char* str = jinx_cstr(env, args[1]);
+    EnchantDict* dict = env->get_user_ptr(env, args[0]);
+    emacs_value list = env->intern(env, "nil");
+    size_t count = 0;
+    char** suggs = str && dict ? enchant_dict_suggest(dict, str, -1, &count) : 
0;
+    if (suggs) {
+        while (count > 0) {
+            char* sugg = suggs[--count];
+            list = jinx_cons(env, jinx_str(env, sugg), list);
+        }
+        enchant_dict_free_string_list(dict, suggs);
+    }
+    return list;
+}
+
+int emacs_module_init(struct emacs_runtime *runtime) {
+    if (runtime->size < (ptrdiff_t)sizeof (*runtime))
+        return 1;
+    emacs_env* env = runtime->get_environment(runtime);
+    jinx_defun(env, "jinx--mod-suggest", 2, 2, jinx_suggest);
+    jinx_defun(env, "jinx--mod-check", 2, 2, jinx_check);
+    jinx_defun(env, "jinx--mod-add", 2, 2, jinx_add);
+    jinx_defun(env, "jinx--mod-dict", 1, 1, jinx_dict);
+    jinx_defun(env, "jinx--mod-describe", 1, 1, jinx_describe);
+    jinx_defun(env, "jinx--mod-wordchars", 1, 1, jinx_wordchars);
+    return 0;
+}
diff --git a/jinx.el b/jinx.el
new file mode 100644
index 0000000000..e9eaef7431
--- /dev/null
+++ b/jinx.el
@@ -0,0 +1,618 @@
+;;; jinx.el --- Enchanted just-in-time spell checker -*- lexical-binding: t -*-
+
+;; Copyright (C) 2023 Free Software Foundation, Inc.
+
+;; Author: Daniel Mendler <mail@daniel-mendler.de>
+;; Maintainer: Daniel Mendler <mail@daniel-mendler.de>
+;; Package-Requires: ((emacs "27.1") (compat "29.1.4.0"))
+;; Created: 2023
+;; Version: 0.1
+;; Homepage: https://github.com/minad/jinx
+
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Jinx provides just-in-time spell-checking checking via libenchant
+;; (https://abiword.github.io/enchant/).  The package aims to achieve
+;; high performance and low resource usage, without impacting your
+;; editing experience.  Overall Jinx should just work out of the box
+;; without much intervention.
+;;
+;; Jinx highlights misspellings lazily only in the visible area of the
+;; window.  Jinx binds directly to the native libenchant API, such
+;; that process communication with a backend Aspell process can be
+;; avoided.  Libenchant is widely used as spell-checking API by text
+;; editors and supports Nuspell, Hunspell, Aspell and a few lesser
+;; known backends.  Jinx automatically compiles and loads the native
+;; module at startup.  Libenchant must be available for compilation.
+;; If `pkg-config' is available it will be used to locate libenchant.
+;; On Debian or Ubuntu, install the packages `libenchant-2',
+;; `libenchant-2-dev' and `pkg-config'.
+;;
+;; Jinx supports multiple languages in a buffer at the same time via
+;; the `jinx-languages' customization variable.  It offers flexible
+;; settings to ignore misspellings via faces (`jinx-exclude-faces' and
+;; `jinx-include-faces'), regular expressions (`jinx-exclude-regexps')
+;; and programmable predicates.  Jinx comes preconfigured for the most
+;; important major modes.
+;;
+;; Jinx offers three autoloaded entry points , the modes
+;; `global-jinx-mode', `jinx-mode' and the command `jinx-correct'.
+;; You can either enable `global-jinx-mode' or add `jinx-mode' to the
+;; hooks of the modes.
+;;
+;; (add-hook 'emacs-startup-hook #'global-jinx-mode)
+;;
+;; (dolist (hook '(text-mode-hook prog-mode-hook conf-mode-hook))
+;;   (add-hook hook #'jinx-mode))
+;;
+;; In order to correct misspellings bind `jinx-correct' to a
+;; convenient key in your configuration.  Jinx is independent of the
+;; Ispell package, so you can reuse the binding M-$ which is bound to
+;; `ispell-word' by default.  When pressing M-$, Jinx offers
+;; correction suggestions for the misspelling next to point.  If the
+;; prefix key C-u is pressed, the entire buffer is spell-checked.
+;;
+;; (keymap-global-set "<remap> <ispell-word>" #'jinx-correct)
+;;
+;; The technique to spell-check only the visible region of the window
+;; was inspired by Campbell Barton's spell-fu package.  Spell-fu
+;; maintains the dictionary itself via a hash table, which results in
+;; high memory usage for languages with compound words or inflected
+;; word forms.  In Jinx we avoid the complexity of managing the
+;; dictionary and access the advanced spell-checker algorithms
+;; (affixation, compound words, etc.)  directly via libenchant.
+;;
+;; Jinx offers a similar UI as Augusto Stoffel's jit-spell package and
+;; borrows ideas from it.  Jit-spell uses Ispell process communication
+;; instead of a native API.  It does not restrict the highlighting to
+;; the visible area.  In my setup I observed an increase in load and
+;; latency as a consequence, in particular in combination with stealth
+;; locking and commands which trigger fontification eagerly like
+;; `consult-line' from my Consult package.
+
+;;; Code:
+
+(require 'compat)
+(eval-when-compile (require 'cl-lib))
+
+;;;; Customization
+
+(defgroup jinx nil
+  "Enchanted just-in-time spell checker."
+  :link '(info-link :tag "Info Manual" "(jinx)")
+  :link '(url-link :tag "Homepage" "https://github.com/minad/jinx";)
+  :link '(emacs-library-link :tag "Library Source" "jinx.el")
+  :group 'text
+  :prefix "jinx-")
+
+(defcustom jinx-delay 0.2
+  "Idle timer delay."
+  :type 'float)
+
+(defface jinx-misspelled
+  '((((supports :underline (:style wave)))
+     :underline (:style wave :color "red"))
+    (t :underline t :inherit error))
+  "Face used for misspelled words.")
+
+(defface jinx-highlight
+  '((t :inherit isearch))
+  "Face used to highlight current misspelling during correction.")
+
+(defface jinx-accept
+  '((t :inherit font-lock-negation-char-face))
+  "Face used for the accept action during correction.")
+
+(defcustom jinx-languages "en"
+  "List of languages."
+  :type '(choice string (repeat string)))
+
+;;;###autoload
+(put 'jinx-languages 'safe-local-variable
+     (lambda (val)
+       (or (stringp val)
+           (and (listp val)
+                (catch 'break
+                  (dolist (s val t)
+                    (unless (stringp s)
+                      (throw 'break nil))))))))
+
+(defcustom jinx-include-faces
+  '((prog-mode font-lock-comment-face
+               font-lock-doc-face
+               font-lock-string-face)
+    (conf-mode font-lock-comment-face
+               font-lock-string-face))
+  "Alist of faces per major mode.
+These faces mark regions which should be included in spell
+checking."
+  :type '(alist :key-type symbol :value-type (repeat face)))
+
+(defcustom jinx-exclude-faces
+  '((markdown-mode
+     markdown-code-face markdown-html-attr-name-face
+     markdown-html-attr-value-face markdown-html-tag-name-face
+     markdown-inline-code-face markdown-link-face
+     markdown-markup-face markdown-plain-url-face
+     markdown-reference-face markdown-url-face)
+    (org-mode
+     org-block org-block-begin-line org-block-end-line
+     org-code org-cite org-cite-key org-date org-footnote
+     org-formula org-latex-and-related org-link org-meta-line
+     org-property-value org-ref-cite-face org-special-keyword
+     org-tag org-todo org-todo-keyword-done
+     org-todo-keyword-habt org-todo-keyword-kill
+     org-todo-keyword-outd org-todo-keyword-todo
+     org-todo-keyword-wait org-verbatim
+     org-modern-tag org-modern-date-active org-modern-date-inactive)
+    (tex-mode
+     font-latex-math-face font-latex-sedate-face
+     font-lock-function-name-face font-lock-keyword-face
+     font-lock-variable-name-face)
+    (texinfo-mode
+     font-lock-function-name-face font-lock-keyword-face
+     font-lock-variable-name-face)
+    (rst-mode
+     rst-literal rst-external rst-directive rst-definition
+     rst-reference)
+    (sgml-mode
+     font-lock-function-name-face font-lock-variable-name-face)
+    (emacs-lisp-mode
+     font-lock-constant-face font-lock-warning-face))
+  "Alist of faces per major mode.
+These faces mark regions which should be excluded in spell
+checking."
+  :type '(alist :key-type symbol :value-type (repeat face)))
+
+(defcustom jinx-exclude-regexps
+  '((emacs-lisp-mode "Package-Requires:.*$")
+    (t "[A-Z]+\\>"         ;; Uppercase words
+       "\\w*?[0-9]\\w*\\>" ;; Words with numbers, hex codes
+       "[a-z]+://\\w*\\>"  ;; URI
+       "<?[-+_.~a-zA-Z][-+_.~:a-zA-Z0-9]*@[-.a-zA-Z0-9]+>?")) ;; Email
+  "List of excluded regexps."
+  :type '(alist :key-type symbol :value-type (repeat regexp)))
+
+(defcustom jinx-include-modes
+  '(text-mode prog-mode conf-mode)
+  "List of modes included by `global-jinx-mode'."
+  :type '(repeat symbol))
+
+;;;; Internal variables
+
+(defvar jinx--predicates
+  (list #'jinx--face-ignored-p
+        #'jinx--regexp-ignored-p
+        #'jinx--word-valid-p
+        #'jinx--flyspell-ignored-p)
+  "Predicate functions called at point with argument START.
+Predicate should return t if the word before point is valid.
+Predicate may return a position to skip forward.")
+
+(defvar jinx--timer nil
+  "Global timer to check pending regions.")
+
+(defvar-local jinx--exclude-faces nil
+  "List of excluded faces.")
+
+(defvar-local jinx--include-faces nil
+  "List of included faces.")
+
+(defvar-local jinx--exclude-regexp nil
+  "Ignore regexp.")
+
+(defvar-local jinx--dicts nil
+  "List of dictionaries.")
+
+(defvar-local jinx--syntax-table nil
+  "Syntax table used during checking.")
+
+(defvar-local jinx--mode-syntax-table nil
+  "Original syntax table of the mode.")
+
+(defvar-local jinx--session-words nil
+  "List of words accepted in this session.")
+
+;;;; Declarations for the bytecode compiler
+
+(defvar jinx-mode)
+(declare-function jinx--mod-check nil)
+(declare-function jinx--mod-add nil)
+(declare-function jinx--mod-suggest nil)
+(declare-function jinx--mod-dict nil)
+(declare-function jinx--mod-describe nil)
+(declare-function jinx--mod-wordchars nil)
+
+;;;; Overlay properties
+
+(put 'jinx 'evaporate             t)
+(put 'jinx 'face                  'jinx-misspelled)
+(put 'jinx 'modification-hooks    (list #'jinx--overlay-modified))
+(put 'jinx 'insert-in-front-hooks (list #'jinx--overlay-modified))
+(put 'jinx 'insert-behind-hooks   (list #'jinx--overlay-modified))
+
+;;;; Predicates
+
+(defun jinx--regexp-ignored-p (start)
+  "Return non-nil if word at START matches ignore regexps."
+  (save-excursion
+    (let (case-fold-search)
+      (goto-char start)
+      (when (and jinx--exclude-regexp (looking-at-p jinx--exclude-regexp))
+        (save-match-data
+          (looking-at jinx--exclude-regexp)
+          (match-end 0))))))
+
+(defun jinx--face-ignored-p (start)
+  "Return non-nil if face at START of word is ignored."
+  (let ((face (get-text-property start 'face)))
+    (or
+     (and jinx--include-faces
+          (if (listp face)
+              (cl-loop for f in face never (memq f jinx--include-faces))
+            (not (memq face jinx--include-faces))))
+     (and jinx--exclude-faces
+          (if (listp face)
+              (cl-loop for f in face thereis (memq f jinx--exclude-faces))
+            (memq face jinx--exclude-faces))))))
+
+(defun jinx--word-valid-p (start)
+  "Return non-nil if word at START is valid."
+  (let ((word (buffer-substring-no-properties start (point))))
+    (or (member word jinx--session-words)
+        (cl-loop for dict in jinx--dicts
+                 thereis (jinx--mod-check dict word)))))
+
+(defun jinx--flyspell-ignored-p (_start)
+  "Check if word before point is ignored.
+This predicate uses the `flyspell-mode-predicate' provided by
+some Emacs modes."
+  (when-let ((pred (or (bound-and-true-p flyspell-generic-check-word-predicate)
+                       (get major-mode 'flyspell-mode-predicate))))
+    (with-syntax-table jinx--mode-syntax-table
+      (ignore-errors (not (funcall pred))))))
+
+;;;; Internal functions
+
+(defun jinx--overlay-modified (overlay &rest _)
+  "Delete modified OVERLAY.
+This function is a modification hook for the overlay."
+  (delete-overlay overlay))
+
+(defun jinx--check-pending (start end)
+  "Check pending regions between START and END."
+  (while-let ((from (text-property-any start end 'jinx--pending t))
+              (to (or (text-property-any from end 'jinx--pending nil) end)))
+    (jinx--check-region from to)
+    (setq start to)))
+
+(defun jinx--check-region (start end)
+  "Check region between START and END."
+  (let ((jinx--mode-syntax-table (syntax-table)))
+    (unwind-protect
+        (with-silent-modifications
+          (save-excursion
+            (save-match-data
+              (set-syntax-table jinx--syntax-table)
+              (jinx--delete-overlays start end)
+              (goto-char start)
+              (while (re-search-forward "\\<\\w+\\>" end t)
+                (let ((word-start (match-beginning 0))
+                      (word-end (point)))
+                  ;; No quote or apostrophe at end
+                  (while (and (< word-start word-end)
+                              (let ((c (char-before word-end))) (or (= c 39) 
(= c 8217))))
+                    (cl-decf word-end))
+                  (when (< word-start word-end)
+                    (goto-char word-end)
+                    (pcase (run-hook-with-args-until-success 'jinx--predicates 
word-start)
+                      ((and (pred integerp) skip) (goto-char (max word-end 
(min end skip))))
+                      ('nil (overlay-put (make-overlay word-start word-end) 
'category 'jinx))))))
+              (remove-list-of-text-properties start end '(jinx--pending)))
+            (set-syntax-table jinx--mode-syntax-table))))))
+
+(defun jinx--get-overlays (start end)
+  "Return misspelled words overlays between START and END."
+  (cl-loop for ov in (overlays-in start end)
+           if (eq (overlay-get ov 'category) 'jinx) collect ov))
+
+(defun jinx--delete-overlays (start end)
+  "Delete overlays between START and END."
+  (dolist (ov (overlays-in start end))
+    (when (eq 'jinx (overlay-get ov 'category))
+      (delete-overlay ov))))
+
+(defun jinx--cleanup ()
+  "Cleanup all overlays and trigger fontification."
+  (with-silent-modifications
+    (save-restriction
+      (widen)
+      (jinx--delete-overlays (point-min) (point-max))
+      (remove-list-of-text-properties (point-min) (point-max) '(jinx--pending))
+      (jit-lock-refontify))))
+
+(defun jinx--mark-pending (start end)
+  "Mark region between START and END as pending."
+  (save-excursion
+    (goto-char start)
+    (re-search-backward "[[:blank:]]\\|^")
+    (setq start (match-end 0))
+    (goto-char end)
+    (re-search-forward "[[:blank:]]\\|$")
+    (setq end (match-beginning 0))
+    (put-text-property start end 'jinx--pending t)
+    ;; inhibit-quit is non-nil for stealth locking
+    (unless inhibit-quit (jinx--schedule))
+    `(jit-lock-bounds ,start . ,end)))
+
+(defun jinx--mode-list (list)
+  "Lookup by major mode in LIST."
+  (cl-loop for (mode . vals) in list
+           if (or (eq mode t) (derived-mode-p mode)) append vals))
+
+(defun jinx--get-org-language ()
+  "Get language from Org #+language keyword."
+  (when (and (not (local-variable-p 'jinx-languages))
+             (derived-mode-p 'org-mode))
+    (save-excursion
+      (save-match-data
+        (goto-char (point-min))
+        (when (re-search-forward "^ *#\\+language: +\\([a-z_]+\\) *$" nil t)
+          (setq-local jinx-languages (match-string-no-properties 1)))))))
+
+(defun jinx--timer-handler ()
+  "Global timer handler, checking the pending regions in all windows."
+  (setq jinx--timer nil)
+  (dolist (frame (frame-list))
+    (dolist (win (window-list frame 'no-miniwindow))
+      (with-current-buffer (window-buffer win)
+        (when jinx-mode
+          (jinx--check-pending (window-start win) (window-end win)))))))
+
+(defun jinx--reschedule (&rest _)
+  "Restart the global idle timer."
+  (when jinx--timer
+    (cancel-timer jinx--timer)
+    (setq jinx--timer nil))
+  (jinx--schedule))
+
+(defun jinx--schedule ()
+  "Start the global idle timer."
+  (when (and (not jinx--timer) (get-buffer-window))
+    (setq jinx--timer
+          (run-with-idle-timer jinx-delay
+                               nil #'jinx--timer-handler))))
+
+(defun jinx--load-module ()
+  "Compile and load native module."
+  (unless (fboundp #'jinx--mod-dict)
+    (unless module-file-suffix
+      (error "Jinx: Native modules are not supported"))
+    (let ((default-directory
+           (file-name-directory (locate-library "jinx.el" t)))
+          (module (concat "jinx-mod" module-file-suffix)))
+      (unless (file-exists-p module)
+        (let ((command
+               `("cc" "-O2" "-Wall" "-Wextra" "-fPIC" "-shared" 
"-Wl,--no-as-needed"
+                 ,@(split-string-and-unquote
+                    (condition-case nil
+                        (car (process-lines "pkg-config" "--cflags" "--libs" 
"enchant-2"))
+                      (error "-I/usr/include/glib-2.0 -I/usr/include/enchant-2 
-lenchant-2")))
+                 ,@(and source-directory
+                        (list (concat "-I" (file-name-concat source-directory 
"src/"))))
+                 "-o" ,module ,(file-name-with-extension module ".c"))))
+          (with-current-buffer (get-buffer-create "*jinx module compilation*")
+            (let ((inhibit-read-only t))
+              (erase-buffer)
+              (insert (string-join command " ") "\n")
+              (if (equal 0 (apply #'call-process (car command) nil 
(current-buffer) t (cdr command)))
+                  (message "Jinx: %s compiled successfully" module)
+                (compilation-mode)
+                (pop-to-buffer (current-buffer))
+                (error "Jinx: Compilation of %s failed" module))))))
+      (module-load (expand-file-name module)))))
+
+(defun jinx--force-check (start end)
+  "Enforce spell-check of region between START and END.
+Return list of overlays, see `jinx--get-overlays'."
+  (or
+   (jinx--get-overlays start end)
+   (let (message-log-max)
+     (message "Fontifying...")
+     (jit-lock-fontify-now)
+     (message "Checking...")
+     (jinx--check-region start end)
+     (message "Done")
+     (jinx--get-overlays start end))
+   (error "No misspelled word found")))
+
+(defun jinx--annotate-suggestion (word)
+  "Annotate WORD during completion."
+  (get-text-property 0 'jinx--annotation word))
+
+(defun jinx--group-suggestion (word transform)
+  "Group WORD during completion, TRANSFORM candidate if non-nil."
+  (if transform
+      word
+    (get-text-property 0 'jinx--group word)))
+
+(defun jinx--suggestions (word)
+  "Retrieve suggestions for WORD."
+  (delete-dups
+   (nconc
+    (cl-loop
+     for dict in jinx--dicts nconc
+     (let* ((suggs (jinx--mod-suggest dict word))
+            (desc (jinx--mod-describe dict))
+            (group (format "Suggestions from dictionary ‘%s’ (%s)"
+                           (car desc) (cdr desc))))
+       (dolist (sugg suggs suggs)
+         (put-text-property 0 (length sugg) 'jinx--group group sugg))))
+    (cl-loop
+     for dict in jinx--dicts for idx from 1 nconc
+     (let* ((at (propertize (make-string idx ?@)
+                            'face 'jinx-accept
+                            'rear-nonsticky t))
+            (desc (jinx--mod-describe dict))
+            (group "Accept and save word")
+            (ann (format " [Personal dictionary ‘%s’]" (car desc))))
+       (list (propertize (concat at word)
+                         'jinx--group group 'jinx--annotation ann)
+             (propertize (concat at (downcase word))
+                         'jinx--group group 'jinx--annotation ann))))
+    (list
+     (propertize (concat #("#" 0 1 (face jinx-accept rear-nonsticky t)) word)
+                 'jinx--group "Accept and save word"
+                 'jinx--annotation " [Session]")))))
+
+(defun jinx--suggestion-table (word)
+  "Completion table for WORD suggestions."
+  (setq word (jinx--suggestions word))
+  (lambda (str pred action)
+    (if (eq action 'metadata)
+        '(metadata (display-sort-function . identity)
+                   (cycle-sort-function . identity)
+                   (category . jinx)
+                   (group-function . jinx--group-suggestion)
+                   (annotation-function . jinx--annotate-suggestion))
+      (complete-with-action action word str pred))))
+
+(defun jinx--correct (overlay &optional recenter)
+  "Correct word at OVERLAY, optionally RECENTER."
+  (let* ((start (overlay-start overlay))
+         (end (goto-char (overlay-end overlay)))
+         (word (buffer-substring-no-properties start end))
+         (hl nil)
+         (selected
+          (unwind-protect
+              (progn
+                (when recenter (recenter))
+                (setq hl (make-overlay start end))
+                (overlay-put hl 'face 'jinx-highlight)
+                (overlay-put hl 'window (selected-window))
+                (or (completing-read
+                     (format "Correct ‘%s’ (RET to skip): " word)
+                     (jinx--suggestion-table word)
+                     nil nil nil t word)
+                    word))
+            (delete-overlay hl))))
+    (if (string-match-p "\\`[@#]" selected)
+        (let* ((new-word (replace-regexp-in-string "\\`[@#]+" "" selected))
+               (idx (- (length selected) (length new-word) 1)))
+          (when (equal new-word "") (setq new-word word))
+          (if (string-prefix-p "#" selected)
+              (unless (member new-word jinx--session-words)
+                (push new-word jinx--session-words))
+            (jinx--mod-add (or (nth idx jinx--dicts)
+                               (user-error "Invalid dictionary"))
+                           new-word))
+          (save-restriction
+            (widen)
+            (dolist (overlay (jinx--get-overlays (point-min) (point-max)))
+              (goto-char (overlay-end overlay))
+              (when (jinx--word-valid-p (overlay-start overlay))
+                (delete-overlay overlay)))))
+      (unless (equal selected word)
+        (delete-overlay overlay)
+        (insert-before-markers selected)
+        (delete-region start end)))))
+
+(defun jinx--nearest-overlay ()
+  "Find nearest misspelled word."
+  (let* ((overlays (jinx--force-check (window-start) (window-end)))
+         (nearest (car overlays)))
+    (dolist (ov (cdr overlays) nearest)
+      (when (< (abs (- (overlay-start ov) (point)))
+               (abs (- (overlay-start nearest) (point))))
+        (setq nearest ov)))))
+
+;;;; Public commands
+
+;;;###autoload
+(defun jinx-correct (&optional all)
+  "Correct nearest misspelled word.
+If predicate argument ALL is given correct all misspellings."
+  (interactive "*P")
+  (unless jinx-mode (jinx-mode 1))
+  (unwind-protect
+      (save-window-excursion
+        (save-excursion
+          (cl-letf (((symbol-function #'jinx--timer-handler) #'ignore)) ;; 
Inhibit
+            (if all
+                (dolist (overlay
+                         (sort (jinx--force-check (point-min) (point-max))
+                               (lambda (a b) (< (overlay-start a) 
(overlay-start b)))))
+                  (when (overlay-buffer overlay) ;; Could be already deleted
+                    (jinx--correct overlay 'recenter)))
+              (jinx--correct (jinx--nearest-overlay))))))
+    (jit-lock-refontify)))
+
+;;;###autoload
+(define-minor-mode jinx-mode
+  "Enchanted just-in-time spell checker."
+  :global nil :group 'jinx
+  (cond
+   (jinx-mode
+    (jinx--load-module)
+    (hack-local-variables)
+    (jinx--get-org-language)
+    (setq jinx--exclude-regexp
+          (when-let ((regexps (jinx--mode-list jinx-exclude-regexps)))
+            (mapconcat (lambda (r) (format "\\(?:%s\\)" r))
+                       regexps "\\|"))
+          jinx--include-faces (jinx--mode-list jinx-include-faces)
+          jinx--exclude-faces (jinx--mode-list jinx-exclude-faces)
+          jinx--dicts (delq nil (mapcar #'jinx--mod-dict
+                                        (ensure-list jinx-languages)))
+          jinx--syntax-table (make-syntax-table))
+    (unless jinx--dicts
+      (message "Jinx: No dictionaries available for `jinx-languages' = %S"
+               jinx-languages))
+    (modify-syntax-entry ?' "w" jinx--syntax-table)
+    (modify-syntax-entry ?$ "_" jinx--syntax-table)
+    (modify-syntax-entry ?% "_" jinx--syntax-table)
+    (dolist (dict jinx--dicts)
+      (cl-loop for c across (jinx--mod-wordchars dict) do
+               (modify-syntax-entry c "w" jinx--syntax-table)))
+    (add-hook 'window-state-change-hook #'jinx--reschedule nil t)
+    (add-hook 'window-scroll-functions #'jinx--reschedule nil t)
+    (add-hook 'post-command-hook #'jinx--reschedule nil t)
+    (jit-lock-register #'jinx--mark-pending))
+   (t
+    (kill-local-variable 'jinx--exclude-regexp)
+    (kill-local-variable 'jinx--include-faces)
+    (kill-local-variable 'jinx--exclude-faces)
+    (kill-local-variable 'jinx--dicts)
+    (kill-local-variable 'jinx--syntax-table)
+    (remove-hook 'window-state-change-hook #'jinx--reschedule t)
+    (remove-hook 'window-scroll-functions #'jinx--reschedule t)
+    (remove-hook 'post-command-hook #'jinx--reschedule t)
+    (jit-lock-unregister #'jinx--mark-pending)
+    (jinx--cleanup))))
+
+;;;###autoload
+(define-globalized-minor-mode global-jinx-mode jinx-mode jinx--on :group 'jinx)
+
+(defun jinx--on ()
+  "Turn `jinx-mode' on."
+  (when (and (not (or noninteractive
+                      buffer-read-only
+                      (eq (aref (buffer-name) 0) ?\s)))
+             (seq-some #'derived-mode-p jinx-include-modes))
+    (jinx-mode 1)))
+
+(provide 'jinx)
+;;; jinx.el ends here