Switch to side-by-side view

--- a/src/common/textsplit.h
+++ b/src/common/textsplit.h
@@ -129,7 +129,7 @@
     bool cjk_to_words(Utf8Iter *it, unsigned int *cp);
 
     bool emitterm(bool isspan, string &term, int pos, int bs, int be);
-    bool doemit(bool spanerase, int bp);
+    bool doemit(bool spanerase, int bp, bool spanemit=false);
 };