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--- a/src/common/textsplit.h
+++ b/src/common/textsplit.h
@@ -220,7 +220,7 @@
     bool doemit(bool spanerase, int bp);
     void discardspan();
     bool span_is_acronym(std::string *acronym);
-    bool words_from_span();
+    bool words_from_span(int bp);
 };
 
 #endif /* _TEXTSPLIT_H_INCLUDED_ */