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Merge pull request #305370 from stuebinm/docs-remove-emacs-docbook-section

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nixos/emacs: remove docbook section in the documentation
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Lin Jian 2024-04-24 08:48:42 +08:00 committed by GitHub
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nixos/modules/services/editors/emacs.md
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@ -366,44 +366,3 @@ convenient if you regularly edit Nix files.
You can use `woman` to get completion of all available
man pages. For example, type `M-x woman <RET> nixos-rebuild <RET>.`
### Editing DocBook 5 XML Documents {#sec-emacs-docbook-xml}
Emacs includes
[nXML](https://www.gnu.org/software/emacs/manual/html_node/nxml-mode/Introduction.html),
a major-mode for validating and editing XML documents. When editing DocBook
5.0 documents, such as [this one](#book-nixos-manual),
nXML needs to be configured with the relevant schema, which is not
included.
To install the DocBook 5.0 schemas, either add
{var}`pkgs.docbook5` to [](#opt-environment.systemPackages)
([NixOS](#sec-declarative-package-mgmt)), or run
`nix-env -f '<nixpkgs>' -iA docbook5`
([Nix](#sec-ad-hoc-packages)).
Then customize the variable {var}`rng-schema-locating-files` to
include {file}`~/.emacs.d/schemas.xml` and put the following
text into that file:
::: {.example #ex-emacs-docbook-xml}
### nXML Schema Configuration (`~/.emacs.d/schemas.xml`)
```xml
<?xml version="1.0"?>
<!--
To let emacs find this file, evaluate:
(add-to-list 'rng-schema-locating-files "~/.emacs.d/schemas.xml")
-->
<locatingRules xmlns="http://thaiopensource.com/ns/locating-rules/1.0">
<!--
Use this variation if pkgs.docbook5 is added to environment.systemPackages
-->
<namespace ns="http://docbook.org/ns/docbook"
uri="/run/current-system/sw/share/xml/docbook-5.0/rng/docbookxi.rnc"/>
<!--
Use this variation if installing schema with "nix-env -iA pkgs.docbook5".
<namespace ns="http://docbook.org/ns/docbook"
uri="../.nix-profile/share/xml/docbook-5.0/rng/docbookxi.rnc"/>
-->
</locatingRules>
```
:::