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-rw-r--r--src/storage/phonetic_key_matrix.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/storage/phonetic_key_matrix.cpp b/src/storage/phonetic_key_matrix.cpp
index 856738f..66a1d4b 100644
--- a/src/storage/phonetic_key_matrix.cpp
+++ b/src/storage/phonetic_key_matrix.cpp
@@ -27,6 +27,7 @@
namespace pinyin{
+/* zero ChewingKey for "'" symbol and last key in fill_matrix function. */
bool fill_matrix(PhoneticKeyMatrix * matrix,
ChewingKeyVector keys,
ChewingKeyRestVector key_rests) {