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Fixed non UCI compliance

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print `<empty>` and accept `<empty>` for UCI string options,
accepting empty strings as well. Internally use empty strings (`""`).

closes https://github.com/official-stockfish/Stockfish/pull/5474

No functional change
This commit is contained in:
Andyson007
2024-07-11 10:09:57 +02:00
committed by Joost VandeVondele
parent 8d1e41458e
commit 42aae5fe8b
4 changed files with 14 additions and 5 deletions
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2
src/engine.cpp
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@@ -93,7 +93,7 @@ Engine::Engine(std::string path) :
options["UCI_LimitStrength"] << Option(false);
options["UCI_Elo"] << Option(1320, 1320, 3190);
options["UCI_ShowWDL"] << Option(false);
options["SyzygyPath"] << Option("<empty>", [](const Option& o) {
options["SyzygyPath"] << Option("", [](const Option& o) {
Tablebases::init(o);
return std::nullopt;
});