protocol/RangeArg: add method IsOpenEnded()
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		| @@ -44,6 +44,10 @@ struct RangeArg { | |||||||
| 		return !(*this == other); | 		return !(*this == other); | ||||||
| 	} | 	} | ||||||
|  |  | ||||||
|  | 	constexpr bool IsOpenEnded() const noexcept { | ||||||
|  | 		return end == All().end; | ||||||
|  | 	} | ||||||
|  |  | ||||||
| 	constexpr bool IsAll() const noexcept { | 	constexpr bool IsAll() const noexcept { | ||||||
| 		return *this == All(); | 		return *this == All(); | ||||||
| 	} | 	} | ||||||
|   | |||||||
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	 Max Kellermann
					Max Kellermann