15.2. Emacs

Install from editors/emacs or editors/emacs-devel.

15.2.1. Validation

Emacs's nxml-mode uses compact relax NG schemas for validating XML. A compact relax NG schema for FreeBSD's extension to DocBook 5.0 is included in the documentation repository. To configure nxml-mode to validate using this schema, create ~/.emacs.d/schema/schemas.xml and add these lines to the file:

<locatingRules xmlns="http://thaiopensource.com/ns/locating-rules/1.0">
  <documentElement localName="section" typeId="DocBook">
  <documentElement localName="chapter" typeId="DocBook">
  <documentElement localName="article" typeId="DocBook">
  <documentElement localName="book" typeId="DocBook">
  <typeId id="DocBook" uri="/usr/local/share/xml/docbook/5.0/rng/docbook.rnc">

15.2.2. Automated Proofreading with Flycheck and Igor

The Flycheck package is available from Milkypostman's Emacs Lisp Package Archive (MELPA). If MELPA is not already in Emacs's packages-archives, it can be added by evaluating

(add-to-list 'package-archives '("melpa" . "http://stable.melpa.org/packages/") t)

Add the line to Emacs's initialization file (one of ~/.emacs, ~/.emacs.el, or ~.emacs.d/init.el) to make this change permanent.

To install Flycheck, evaluate

(package-install 'flycheck)

Create a Flycheck checker for textproc/igor by evaluating

(flycheck-define-checker igor
  "FreeBSD Documentation Project sanity checker.

See URLs https://www.freebsd.org/docproj/ and
  :command ("igor" "-X" source-inplace)
  :error-parser flycheck-parse-checkstyle
  :modes (nxml-mode)
  :standard-input t)

  (add-to-list 'flycheck-checkers 'igor 'append)

Again, add these lines to Emacs's initialization file to make the changes permanent.

15.2.3. FreeBSD Documentation Specific Settings

To apply settings specific to the FreeBSD documentation project, create .dir-locals.el in the root directory of the documentation repository and add these lines to the file:

;;; Directory Local Variables
;;; For more information see (info "(emacs) Directory Variables")

  (eval . (turn-on-auto-fill))
  (fill-column . 70)
  (eval . (require 'flycheck))
  (eval . (flycheck-mode 1))
  (flycheck-checker . igor)
  (eval . (add-to-list 'rng-schema-locating-files "~/.emacs.d/schema/schemas.xml"))))

All FreeBSD documents are available for download at https://download.freebsd.org/ftp/doc/

Questions that are not answered by the documentation may be sent to <freebsd-questions@FreeBSD.org>.
Send questions about this document to <freebsd-doc@FreeBSD.org>.