diff --git a/src/rime/gear/script_translator.cc b/src/rime/gear/script_translator.cc
index d0abf5edd7..79be7abe8e 100644
--- a/src/rime/gear/script_translator.cc
+++ b/src/rime/gear/script_translator.cc
@@ -311,7 +311,7 @@ string ScriptSyllabifier::GetPreeditString(const Phrase& cand) const {
   const auto& delimiters = translator_->delimiters();
   std::stack<size_t> lengths;
   string output;
-  SyllabifyTask task{cand.code(), syllable_graph_, cand.end() - start_,
+  SyllabifyTask task{cand.matching_code(), syllable_graph_, cand.end() - start_,
                      [&](SyllabifyTask* task, size_t depth, size_t current_pos,
                          size_t next_pos) {
                        size_t len = output.length();
diff --git a/src/rime/gear/translator_commons.h b/src/rime/gear/translator_commons.h
index a004d9f8e2..f4aac18f4d 100644
--- a/src/rime/gear/translator_commons.h
+++ b/src/rime/gear/translator_commons.h
@@ -81,6 +81,24 @@ class Phrase : public Candidate {
   Code& code() const { return entry_->code; }
   const DictEntry& entry() const { return *entry_; }
   const Language* language() const { return language_; }
+  size_t matching_code_size() const {
+    return entry_->matching_code_size != 0 ? entry_->matching_code_size
+                                           : entry_->code.size();
+  }
+  bool is_exact_match() const {
+    return entry_->matching_code_size == 0 ||
+           entry_->matching_code_size == entry_->code.size();
+  }
+  bool is_predicitve_match() const {
+    return entry_->matching_code_size != 0 &&
+           entry_->matching_code_size < entry_->code.size();
+  }
+  Code matching_code() const {
+    return entry_->matching_code_size == 0
+               ? entry_->code
+               : Code(entry_->code.begin(),
+                      entry_->code.begin() + entry_->matching_code_size);
+  }
   Spans spans() {
     return syllabifier_ ? syllabifier_->Syllabify(this) : Spans();
   }