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-rw-r--r--source/luametatex/source/tex/texscanning.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/luametatex/source/tex/texscanning.h b/source/luametatex/source/tex/texscanning.h
index 90897bf54..303143587 100644
--- a/source/luametatex/source/tex/texscanning.h
+++ b/source/luametatex/source/tex/texscanning.h
@@ -120,7 +120,7 @@ extern halfword tex_scan_math_properties_number (void);
extern halfword tex_scan_math_group_number (void);
extern halfword tex_scan_math_index_number (void);
extern halfword tex_scan_math_discretionary_number (int optional_equal);
-extern halfword tex_scan_category_code (void);
+extern halfword tex_scan_category_code (int optional_equal);
extern singleword tex_scan_box_index (void); /*tex For local boxes: small for now! */
extern singleword tex_scan_box_axis (void);
extern halfword tex_scan_function_reference (int optional_equal);