embed filter extensions in format extension

2 files changed, 0 insertions, 91 deletions

diff --git a/_extensions/pandoc-ext/abstract-section/_extension.yaml b/_extensions/pandoc-ext/abstract-section/_extension.yaml
deleted file mode 100644
index f6a946b..0000000
--- a/_extensions/pandoc-ext/abstract-section/_extension.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-name: abstract-section
-author: Albert Krewinkel
-version: 1.2.0
-contributes:
-  filters:
-    - abstract-section.lua
diff --git a/_extensions/pandoc-ext/abstract-section/abstract-section.lua b/_extensions/pandoc-ext/abstract-section/abstract-section.lua
deleted file mode 100644
index 4badeb4..0000000
--- a/_extensions/pandoc-ext/abstract-section/abstract-section.lua
+++ /dev/null
@@ -1,85 +0,0 @@
---[[
-abstract-section – move an "abstract" section into document metadata
-
-Copyright: © 2017–2023 Albert Krewinkel
-License:   MIT – see LICENSE file for details
-]]
-local stringify = (require 'pandoc.utils').stringify
-local section_identifiers = {
-  abstract = true,
-}
-local collected = {}
---- The level of the highest heading that was seen so far. Abstracts
---- must be at or above this level to prevent nested sections from being
---- treated as metadata. Only top-level sections should become metadata.
-local toplevel = 6
-
---- Extract abstract from a list of blocks.
-local function abstract_from_blocklist (blocks)
-  local body_blocks = {}
-  local looking_at_section = false
-
-  for _, block in ipairs(blocks) do
-    if block.t == 'Header' and block.level <= toplevel then
-      toplevel = block.level
-      if section_identifiers[block.identifier] then
-        looking_at_section = block.identifier
-        collected[looking_at_section] = {}
-      else
-        looking_at_section = false
-        body_blocks[#body_blocks + 1] = block
-      end
-    elseif looking_at_section then
-      if block.t == 'HorizontalRule' then
-        looking_at_section = false
-      else
-        local collect = collected[looking_at_section]
-        collect[#collect + 1] = block
-      end
-    else
-      body_blocks[#body_blocks + 1] = block
-    end
-  end
-
-  return body_blocks
-end
-
-Pandoc = function (doc)
-  local meta = doc.meta
-
-  -- configure
-  section_identifiers_list =
-    (doc.meta['abstract-section'] or {})['section-identifiers']
-  if section_identifiers_list and #section_identifiers_list > 0 then
-    section_identifiers = {}
-    for i, ident in ipairs(section_identifiers_list) do
-      section_identifiers[stringify(ident)] = true
-    end
-  end
-  -- unset config in meta
-  doc.meta['abstract-section'] = nil
-
-  local blocks = {}
-  if PANDOC_VERSION >= {2,17} then
-    -- Walk all block lists by default
-    blocks = doc.blocks:walk{Blocks = abstract_from_blocklist}
-  elseif PANDOC_VERSION >= {2,9,2} then
-    -- Do the same with pandoc versions that don't have walk methods but the
-    -- `walk_block` function.
-    blocks = pandoc.utils.walk_block(
-      pandoc.Div(doc.blocks),
-      {Blocks = abstract_from_blocklist}
-    ).content
-  else
-    -- otherwise, just check the top-level block-list
-    blocks = abstract_from_blocklist(doc.blocks)
-  end
-  for metakey in pairs(section_identifiers) do
-    metakey = stringify(metakey)
-    local abstract = collected[metakey]
-    if not meta[metakey] and abstract and #abstract > 0 then
-      meta[metakey] = pandoc.MetaBlocks(abstract)
-    end
-  end
-  return pandoc.Pandoc(blocks, meta)
-end