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-rw-r--r--doc/lua-filters.md5
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/lua-filters.md b/doc/lua-filters.md
index a5c9905ab..35610cea3 100644
--- a/doc/lua-filters.md
+++ b/doc/lua-filters.md
@@ -344,11 +344,14 @@ inside headers), removes footnotes, and replaces links
with regular text.
``` lua
+-- we use preloaded text to get a UTF-8 aware 'upper' function
+local text = require('text')
+
function Header(el)
if el.level == 1 then
return pandoc.walk_block(el, {
Str = function(el)
- return pandoc.Str(el.text:upper())
+ return pandoc.Str(text.upper(el.text))
end })
end
end