ctags: location.symbol and location.source should now correspond with respect to escaping

src/ctags.cpp

@@ -102,7 +102,21 @@ Ctags::Location Ctags::get_location(const std::string &line_, bool add_markup, b
   auto symbol_end = line.find('\t');
   if(symbol_end == std::string::npos)
     return location;
-  location.symbol = line.substr(0, symbol_end);
+
+  // Unescape symbol
+  if(symbol_end > 0) {
+    location.symbol.reserve(symbol_end);
+    bool escaped = false;
+    for(size_t i = 0; i < symbol_end; ++i) {
+      if(!escaped && line[i] == '\\') {
+        escaped = true;
+        continue;
+      }
+      escaped = false;
+      location.symbol += line[i];
+    }
+  }
+
   if(9 < location.symbol.size() && location.symbol[8] == ' ' && starts_with(location.symbol, "operator")) {
     auto &chr = location.symbol[9];
     if(!((chr >= 'A' && chr <= 'Z') || (chr >= 'a' && chr <= 'z') || (chr >= '0' && chr <= '9') || chr == '_' || chr == '$' || static_cast<unsigned char>(chr) >= 128))