make headings link to themselves

Makefile

@@ -15,10 +15,11 @@ html-cfp:
 
 MD2HTML=$(PANDOC) \
 	-f markdown-smart-tex_math_dollars+autolink_bare_uris+wikilinks_title_after_pipe \
-	--lua-filter=wikilinks.lua
+	--lua-filter=wikilinks.lua \
+	--lua-filter=headings.lua \
 
 # generate html from a md file
-out/%.html: src/%.md page.tmpl
+out/%.html: src/%.md #page.tmpl wikilinks.lua headings.lua
 	$(MD2HTML) --template page.tmpl "$<" -o "$@"
 
 # regenerate html whenever an md file changes

headings.lua

@@ -0,0 +1,7 @@
+-- Make all headings (except the page h1 added by page.tmpl)
+-- clickable links to themselves, for easy bookmarking/linking.
+
+function Header(el)
+   el.content = pandoc.Link(el.content, '#' .. el.identifier)
+   return el
+end

out/css/site.css

@@ -10,6 +10,12 @@ h1, h2, h3, h4, h5, h6 {
     text-shadow: 1px 1px 2px white;
 }
 
+h1 a, h2 a, h3 a, h4 a, h5 a, h6 a,
+h1 a:hover, h2 a:hover, h3 a:hover, h4 a:hover, h5 a:hover, h6 a:hover {
+    text-decoration:none;
+    color:inherit;
+}
+
 .tight p {
     margin:0;
 }

page.tmpl

@@ -35,7 +35,7 @@
   <div class="container">
 
 <p><a href="/">plaintextaccounting.org</a></p>
-<h1>$title$</h1>
+<h1><a href="">$title$</a></h1>
 
 $body$