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doc: Linkify man page references

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This commit is contained in:
Jan Tojnar 2021-07-12 18:40:33 +02:00
parent c9139dfa1a
commit 04b59b0328
4 changed files with 23 additions and 1 deletions
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1
doc/Makefile
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@ -11,6 +11,7 @@ pandoc_commonmark_enabled_extensions = +attributes+fenced_divs+footnotes+bracket
pandoc_flags = --extract-media=$(pandoc_media_dir) \
--lua-filter=$(PANDOC_LUA_FILTERS_DIR)/diagram-generator.lua \
--lua-filter=build-aux/pandoc-filters/myst-reader/roles.lua \
--lua-filter=build-aux/pandoc-filters/link-unix-man-references.lua \
--lua-filter=build-aux/pandoc-filters/docbook-writer/rst-roles.lua \
--lua-filter=build-aux/pandoc-filters/docbook-writer/labelless-link-is-xref.lua \
-f commonmark$(pandoc_commonmark_enabled_extensions)+smart

18
doc/build-aux/pandoc-filters/link-unix-man-references.lua Normal file
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@ -0,0 +1,18 @@
--[[
Turns a manpage reference into a link, when a mapping is defined
in the unix-man-urls.lua file.
]]
local man_urls = {
["tmpfiles.d(5)"] = "https://www.freedesktop.org/software/systemd/man/tmpfiles.d.html",
["nix.conf(5)"] = "https://nixos.org/manual/nix/stable/#sec-conf-file",
["systemd.time(7)"] = "https://www.freedesktop.org/software/systemd/man/systemd.time.html",
["systemd.timer(5)"] = "https://www.freedesktop.org/software/systemd/man/systemd.timer.html",
}
function Code(elem)
local is_man_role = elem.classes:includes('interpreted-text') and elem.attributes['role'] == 'manpage'
if is_man_role and man_urls[elem.text] ~= nil then
return pandoc.Link(elem, man_urls[elem.text])
end
end

4
doc/contributing/contributing-to-documentation.chapter.md
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@ -53,7 +53,9 @@ Additionally, the following syntax extensions are currently used:
This syntax is taken from [MyST](https://myst-parser.readthedocs.io/en/latest/using/syntax.html#targets-and-cross-referencing).
- []{#ssec-contributing-markup-inline-roles}
If you want to link to a man page, you can use ``{manpage}`nix.conf(5)```, which will turn into {manpage}`nix.conf(5)`.
If you want to link to a man page, you can use `` {manpage}`nix.conf(5)` ``, which will turn into {manpage}`nix.conf(5)`.
The references will turn into links when a mapping exists in {file}`doc/build-aux/pandoc-filters/unix-man-urls.lua`.
This syntax is taken from [MyST](https://myst-parser.readthedocs.io/en/latest/syntax/syntax.html#roles-an-in-line-extension-point). Though, the feature originates from [reStructuredText](https://www.sphinx-doc.org/en/master/usage/restructuredtext/roles.html#role-manpage) with slightly different syntax.

1
nixos/doc/manual/md-to-db.sh
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@ -17,6 +17,7 @@ pandoc_flags=(
# - media extraction (was only required for diagram generator)
# - docbook-reader/citerefentry-to-rst-role.lua (only relevant for DocBook → MarkDown/rST/MyST)
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/myst-reader/roles.lua"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/link-unix-man-references.lua"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/docbook-writer/rst-roles.lua"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/docbook-writer/labelless-link-is-xref.lua"
-f "commonmark${pandoc_commonmark_enabled_extensions}+smart"