forked from lix-project/lix
Ensure the completion marker is not processed beyond completion
I was surprised to see an error mentioning ___COMPLETE___ when trying to complete a flag argument that had no completer implemented
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5f06a91bf7
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@ -127,9 +127,9 @@ bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
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if (flag.handler.arity == ArityAny) break;
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throw UsageError("flag '%s' requires %d argument(s)", name, flag.handler.arity);
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}
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if (flag.completer)
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if (auto prefix = needsCompletion(*pos)) {
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anyCompleted = true;
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if (flag.completer)
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flag.completer(n, *prefix);
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}
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args.push_back(*pos++);
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@ -146,6 +146,7 @@ bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
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&& hasPrefix(name, std::string(*prefix, 2)))
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completions->add("--" + name, flag->description);
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}
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return false;
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}
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auto i = longFlags.find(std::string(*pos, 2));
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if (i == longFlags.end()) return false;
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@ -187,10 +188,12 @@ bool Args::processArgs(const Strings & args, bool finish)
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{
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std::vector<std::string> ss;
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for (const auto &[n, s] : enumerate(args)) {
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ss.push_back(s);
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if (auto prefix = needsCompletion(s)) {
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ss.push_back(*prefix);
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if (exp.completer)
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if (auto prefix = needsCompletion(s))
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exp.completer(n, *prefix);
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} else
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ss.push_back(s);
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}
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exp.handler.fun(ss);
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expectedArgs.pop_front();
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@ -322,16 +325,16 @@ MultiCommand::MultiCommand(const Commands & commands_)
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.optional = true,
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.handler = {[=](std::string s) {
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assert(!command);
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if (auto prefix = needsCompletion(s)) {
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for (auto & [name, command] : commands)
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if (hasPrefix(name, *prefix))
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completions->add(name);
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}
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auto i = commands.find(s);
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if (i == commands.end())
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throw UsageError("'%s' is not a recognised command", s);
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command = {s, i->second()};
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command->second->parent = this;
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}},
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.completer = {[&](size_t, std::string_view prefix) {
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for (auto & [name, command] : commands)
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if (hasPrefix(name, prefix))
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completions->add(name);
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}}
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});
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