Confusion with build_version.cc.in:AddProperty function.

[ksolana]

As per the comment the props map is modified only when "@:" is not found. But then at != colon + 1 seemingly indicates it is searching for ":@"? Is the comment incorrect or the code. I'm confused.

namespace ROCKSDB_NAMESPACE {
static void AddProperty(std::unordered_map<std::string, std::string> *props, const std::string& name) {
  size_t colon = name.find(":");
  if (colon != std::string::npos && colon > 0 && colon < name.length() - 1) {
    // If we found a "@:", then this property was a build-time substitution that failed.  Skip it
    size_t at = name.find("@", colon);
    if (at != colon + 1) {
      // Everything before the colon is the name, after is the value
      (*props)[name.substr(0, colon)] = name.substr(colon + 1);
    }
  }
}