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spacemacs/layers/+checkers/spell-checking/README.org
2018-02-17 17:30:44 +02:00

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Org Mode

#+TITLE: Spell Checking layer
* Table of Contents :TOC_4_gh:noexport:
- [[#description][Description]]
- [[#features][Features:]]
- [[#install][Install]]
- [[#layer][Layer]]
- [[#spell-checker-configuration][Spell Checker Configuration]]
- [[#disabling-by-default][Disabling by default]]
- [[#enabling-auto-dictionary-mode][Enabling auto-dictionary-mode]]
- [[#enabling-multi-dictionary-support-with-hunspell][Enabling multi-dictionary support with hunspell]]
- [[#enable-auto-completion-popup][Enable auto-completion popup]]
- [[#key-bindings][Key Bindings]]
- [[#known-issues][Known issues]]
* Description
This layer provides spell checking capabilities to Spacemacs.
** Features:
- Buffer-wide spell checking via external command (ispell, hunspell, aspell) run through [[http://www-sop.inria.fr/members/Manuel.Serrano/flyspell/flyspell.html][Flyspell]].
- Spell as you type
- Optional correction popups, controlled by =enable-flyspell-auto-completion= variable.
- [[https://github.com/nschum/auto-dictionary-mode][Auto dictionary mode]] for some languages.
* Install
** Layer
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =spell-checking= to the existing =dotspacemacs-configuration-layers= list in this
file.
** Spell Checker Configuration
The built-in Emacs variable that controls which external spell-checking program
is used is =ispell-program-name=, which can be set in your
=dotspacemacs/user-init= function if you do not like the default. It will give
priority to =aspell= if it is installed on your system. Another important
variable to be aware of is =ispell-dictionary= which will control the default
dictionary used by =ispell-program-name= (instead of using this variable you can
also use the key binding ~SPC S d~).
** Disabling by default
By default, =spell-checking= is enabled in all available major modes and may be
toggled off with ~SPC t S~. You can default this to off by setting the variable
=spell-checking-enable-by-default= to =nil=:
#+BEGIN_SRC emacs-lisp
(setq-default dotspacemacs-configuration-layers
'((spell-checking :variables spell-checking-enable-by-default nil)))
#+END_SRC
** Enabling auto-dictionary-mode
=auto-dictionary-mode= tries to detect the current language from the buffer
content, and activate the corresponding dictionary. You can enable it by setting
the variable =spell-checking-enable-auto-dictionary= to something other than
=nil=:
#+BEGIN_SRC emacs-lisp
(setq-default dotspacemacs-configuration-layers
'((spell-checking :variables spell-checking-enable-auto-dictionary t)))
#+END_SRC
Some people encountered bugs with =auto-dictionary-mode=, especially in *daemon
mode* where new =emacsclient= open directly freezed. If so, no other workaround
have been found yet than disabling =auto-dictionary-mode= completely.
Not all languages are supported by =auto-dictionary-list=. The supported
languages are listed in the =adict-language-list= variable, that can be checked
with =spacemacs/describe-variable=. For convenience, here is the list of
currently supported language:
| Language |
|-------------------|
| catalan |
| classical greek |
| danish |
| english |
| esperanto |
| french |
| german |
| hindi |
| hungarian |
| modern greek |
| norwegian bokmål |
| norwegian nynorsk |
| portuguese |
| romanian |
| slovak |
| slovene |
| spanish |
| swedish |
** Enabling multi-dictionary support with hunspell
If your language is not supported by auto-dictionary feature or you author
multi-lingual documents you might be compeled to use hunspell's multi-dictionary
mode. For example to enable it for pl_PL and en_GB dictionaries you could put
following code in your dotspacemacs/user-config section in your configuration
file:
#+BEGIN_SRC emacs-lisp
(with-eval-after-load "ispell"
(setq ispell-program-name "hunspell")
;; ispell-set-spellchecker-params has to be called
;; before ispell-hunspell-add-multi-dic will work
(ispell-set-spellchecker-params)
(ispell-hunspell-add-multi-dic "pl_PL,en_GB")
(setq ispell-dictionary "pl_PL,en_GB"))
#+END_SRC
One caveat is you need quite modern ispell.el for above to work. It's been
tested with version coming from Emacs 25.2 repository.
** Enable auto-completion popup
To enable auto-completion popup when the point is idle on a misspelled word
set the layer variable =enable-flyspell-auto-completion= to t:
#+BEGIN_SRC emacs-lisp
(setq-default dotspacemacs-configuration-layers
'((spell-checking :variables enable-flyspell-auto-completion t)))
#+END_SRC
* Key Bindings
| Key Binding | Description |
|-------------+--------------------------|
| ~SPC S b~ | flyspell whole buffer |
| ~SPC S c~ | flyspell correct |
| ~SPC S d~ | change dictionary |
| ~SPC S n~ | flyspell goto next error |
| ~SPC t S~ | toggle flyspell |
* Known issues
Vim-empty-lines layer seems incompatible with spell-checking inside org-mode. If
you experience "Args out of range" error message when invoking ~SPC S c~ inside
org-mode buffer then check if you don't have vim-empty-lines layer enabled and
disable it.