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-rw-r--r--support/make4ht/domfilters/make4ht-mathmlfixes.lua1
1 files changed, 1 insertions, 0 deletions
diff --git a/support/make4ht/domfilters/make4ht-mathmlfixes.lua b/support/make4ht/domfilters/make4ht-mathmlfixes.lua
index a52b0e5d6b..3e044b9445 100644
--- a/support/make4ht/domfilters/make4ht-mathmlfixes.lua
+++ b/support/make4ht/domfilters/make4ht-mathmlfixes.lua
@@ -28,6 +28,7 @@ local function fix_nested_mstyle(el)
-- if parent doesn't have the mathvariant attribute copy it from <mstyle>
if not parent:get_attribute("mathvariant") then
local mathvariant = el:get_attribute("mathvariant")
+ parent._attr = parent._attr or {}
parent:set_attribute("mathvariant", mathvariant)
end
-- copy the contents of <mstyle> to the parent element