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Add a description in the completion outputs

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Make nix output completions in the form `completion\tdescription`.
This can't be used by bash (afaik), but other shells like zsh or fish
can display it along the completion choices
This commit is contained in:
regnat 2020-10-09 09:39:51 +02:00
parent 58dadf2954
commit 04e5d0e704
6 changed files with 42 additions and 20 deletions
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12
src/libutil/args.hh
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@ -283,7 +283,17 @@ typedef std::vector<std::pair<std::string, std::string>> Table2;
void printTable(std::ostream & out, const Table2 & table);
extern std::shared_ptr<std::set<std::string>> completions;
struct Completion {
std::string completion;
std::string description;
bool operator<(const Completion & other) const;
};
class Completions : public std::set<Completion> {
public:
void add(std::string completion, std::string description = "");
};
extern std::shared_ptr<Completions> completions;
extern bool pathCompletions;
std::optional<std::string> needsCompletion(std::string_view s);