aux-search/flake-info/assets/data/myst-reader/roles.lua
2023-07-03 22:03:00 +02:00

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--[[
Replaces Str AST nodes containing {role}, followed by a Code node
by a Code node with attrs that would be produced by rST reader
from the role syntax.
This is to emulate MyST syntax in Pandoc.
(MyST is a CommonMark flavour with rST features mixed in.)
Reference: https://myst-parser.readthedocs.io/en/latest/syntax/syntax.html#roles-an-in-line-extension-point
]]
function Inlines(inlines)
for i = #inlines-1,1,-1 do
local first = inlines[i]
local second = inlines[i+1]
local correct_tags = first.tag == 'Str' and second.tag == 'Code'
if correct_tags then
-- docutils supports alphanumeric strings separated by [-._:]
-- We are slightly more liberal for simplicity.
-- Allow preceding punctuation (eg '('), otherwise '({file}`...`)'
-- does not match. Also allow anything followed by a non-breaking space
-- since pandoc emits those after certain abbreviations (e.g. e.g.).
local prefix, role = first.text:match('^(.*){([-._+:%w]+)}$')
if role ~= nil and (prefix == '' or prefix:match("^.*[%p ]$") ~= nil) then
if prefix == '' then
inlines:remove(i)
else
first.text = prefix
end
second.attributes['role'] = role
second.classes:insert('interpreted-text')
end
end
end
return inlines
end