From 5a039e9d077fb05d554a3ea33f1594f8f4fa0e37 Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Thu, 3 Jun 2021 18:40:55 +0200
Subject: Generate anchor in body headings

---
 filters/common_actions.lua | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

(limited to 'filters')

diff --git a/filters/common_actions.lua b/filters/common_actions.lua
index 5b6c86b..8383ada 100644
--- a/filters/common_actions.lua
+++ b/filters/common_actions.lua
@@ -1,15 +1,12 @@
 function CodeBlock(el)
     if el.classes[1] == "plain" then
-        el = pandoc.Div({el}, {class = 's-code'})
+        el = pandoc.Div({ el }, { class = 's-code' })
     elseif el.classes[1] then
         local formatted = pandoc.pipe('pygmentize', {
-            '-l', el.classes[1], '-f', 'html', '-O',
-            'cssclass=s-code s-code--highlight'
+            '-l', el.classes[1], '-f', 'html', '-O', 'cssclass=s-code s-code--highlight',
         }, el.text)
 
-        if formatted then
-            el = pandoc.RawBlock('html', formatted)
-        end
+        if formatted then el = pandoc.RawBlock('html', formatted) end
     end
 
     return el
@@ -18,11 +15,17 @@ end
 function Header(el)
     if el.level == 1 then
         local newchildren = pandoc.List()
-
-        newchildren:insert(pandoc.Span(el.content, {class = 's-headlines__title-inner'}))
-
+        newchildren:insert(pandoc.Span(el.content, { class = 's-headlines__title-inner' }))
         el.content = newchildren
     end
+
+    if el.level <= 3 and el.identifier ~= '' then
+        el.content:insert(pandoc.Space())
+        el.content:insert(pandoc.Link(pandoc.RawInline('html',
+            '<svg class="o-icon"><use href="/symbols.svg#icon-link"></use></svg>'),
+            '#' .. el.identifier, nil, { class = 's-headlines__link' }))
+    end
+
     return el
 end
 
@@ -36,7 +39,7 @@ function Div(el)
 
         for _, children in ipairs(el.content[1].content) do
             newchildren:insert(pandoc.RawBlock('html',
-                                               '<li class="c-page__prefixed c-page__prefixed--ref">'))
+                '<li class="c-page__prefixed c-page__prefixed--ref">'))
             newchildren:extend(children)
             newchildren:insert(pandoc.RawBlock('html', '</li>'))
         end
-- 
cgit v1.2.3-54-g00ecf