pandoc: rewrite input paths in included files

1 files changed, 20 insertions, 0 deletions

diff --git a/pandoc/filters/include-files.lua b/pandoc/filters/include-files.lua
index 06cfd4e6..a42ae1ec 100644
--- a/pandoc/filters/include-files.lua
+++ b/pandoc/filters/include-files.lua
@@ -41,6 +41,26 @@ local function update_contents(blocks, shift_by, include_path)
       end
       return image
     end,
+    -- If tex input paths are relative then prepend include file path
+    RawBlock = function (el)
+      io.stderr:write("include-filter: Raw Block found.\n")
+      -- Only handle tex RawBlocks
+      if el.format ~= 'tex' then
+        return el
+      end
+      io.stderr:write("include-filter: Raw Tex Block found.\n")
+
+      el.text = el.text:gsub('\\input{([^}]+)}', function(match)
+        local input_path = match
+        if path.is_relative(include_path) then
+          include_path = path.normalize(path.join({include_path, input_path}))
+        end
+
+        return '\\input{' .. include_path .. '}'
+      end)
+
+      return el
+    end,
     -- Update path for include-code-files.lua filter style CodeBlocks
     CodeBlock = function (cb)
       if cb.attributes.include and path.is_relative(cb.attributes.include) then