From ec4bdfe4b9937f790417e8a3aec006d4c5d6dd85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B1=85=E6=88=8E=E6=B0=8F?= <chen.sst@gmail.com>
Date: Sat, 9 Mar 2024 10:54:08 +0800
Subject: [PATCH] fix(echo_translator): return null for empty query

---
 src/rime/gear/echo_translator.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/rime/gear/echo_translator.cc b/src/rime/gear/echo_translator.cc
index 1391610f6..d49d4c629 100644
--- a/src/rime/gear/echo_translator.cc
+++ b/src/rime/gear/echo_translator.cc
@@ -31,6 +31,9 @@ an<Translation> EchoTranslator::Query(const string& input,
                                       const Segment& segment) {
   DLOG(INFO) << "input = '" << input << "', [" << segment.start << ", "
              << segment.end << ")";
+  if (input.empty()) {
+    return nullptr;
+  }
   auto candidate =
       New<SimpleCandidate>("raw", segment.start, segment.end, input);
   if (candidate) {