permalinks and make non-h1 headers smaller

Makefile

@@ -1,12 +1,12 @@
 ISSUES != find issues -type d
-DEST_PDF_FILES := $(ISSUES:issues/%=issue-%.pdf)
-DEST_HTML_FILES := $(ISSUES:issues/%=issue-%.html)
+DEST_PDF_FILES := $(ISSUES:issues/%=dist/issue-%.pdf)
+DEST_HTML_FILES := $(ISSUES:issues/%=dist/issue-%.html)
 
 PANDOC != command -v pandoc 2> /dev/null
 
 all: $(DEST_PDF_FILES) $(DEST_HTML_FILES)
 
-issue-%.pdf: issues/%
+dist/issue-%.pdf: issues/%
 	$(PANDOC) \
 		--file-scope \
 		--from markdown \
@@ -18,22 +18,24 @@ issue-%.pdf: issues/%
 		--output $@ \
 		$</*.md
 
-issue-%.html: issues/%
+dist/issue-%.html: issues/%
 	$(PANDOC) \
 		--file-scope \
 		--from markdown \
 		--to html \
 		--standalone \
 		--table-of-contents \
+		--lua-filter header-permalinks.lua \
+		--lua-filter increase-header-levels.lua \
 		--metadata title:"tildeverse zine $@" \
-		--metadata include-before:"<div class=\"container\">" \
-		--metadata include-after:"</div>" \
+		--variable include-before:"<div class=\"container\">" \
+		--variable include-after:"</div>" \
 		--css https://tilde.team/css/hacker.css \
 		--output $@ \
 		$</*.md
 
 clean:
-	rm *.html *.pdf
+	rm dist/*.html dist/*.pdf
 
 .PHONY: clean
 

header-permalinks.lua

@@ -0,0 +1,6 @@
+function Header(elem)
+    table.insert(elem.content, pandoc.Space())
+    table.insert(elem.content, pandoc.Link("§", "#" .. elem.identifier))
+    return elem
+end
+

increase-header-levels.lua

@@ -0,0 +1,7 @@
+function Header(elem)
+    if elem.level > 1 then
+        elem.level = elem.level + 1
+    end
+    return elem
+end
+