---
title: Test out Indexes from Spans in Markdown
linkcolor: green
linkcontrastcolor: red
---

# Section One

[Éomer]{.index}[Éomer] let blow the horns to rally all men to his
banner that could come thither; for he thought to make a great
shield-wall at the last, and stand, and fight there on foot till all
fell, and do deeds of song on the fields of
[Pelennor]{.index}Pelennor, though no man should be left in the West
to remember the last [Mark, King of the]{.index}King of the Mark.  So
he rode to a green hillock and there set his banner, and the [White
Horse]{.index}White Horse ran rippling in the wind.

| Out of doubt, out of dark to the day's rising
| I came singing in the sun, sword unsheathing.
| To hope's end I rode and to heart's breaking:
| Now for wrath, now for ruin and a red nightfall!

These staves he spoke, yet he laughed as he said them. For once more
lust of battle was on him; and he was still unscathed, and he was
young, and he was king: the lord of a fell people. And lo! even as he
laughed at despair he looked out again on the [Ships,
Black]{.pandoc}black ships, and he lifted up his sword to defy them.

``` {=context}
\completeindex
```

all: context-index.ctx.pdf

%.ctx.pdf : %.md
	pandoc -w context -o $@ --lua-filter=context-index.lua $<

local function has_value (tab, val)
   for index, value in ipairs(tab) do
      if value == val then
         return true
      end
   end
   return false
end

function Span(el)
   if el.classes and #el.classes > 0 then
      if has_value(el.classes, 'index') then
         if FORMAT == "context" then
            table.insert(el.content, 1, pandoc.RawInline('context', '\\index{'))
            table.insert(el.content, pandoc.RawInline('context', '}'))
         end
      end
   end
   return el.content
end -- Span