Fix replied-to account not being first mention

Tusker/Extensions/Array+Uniques.swift

@@ -11,10 +11,10 @@ import Foundation
 extension Array {
     func uniques<ID: Hashable>(by identify: (Element) -> ID) -> [Element] {
         var uniques = Set<Hashed<Element, ID>>()
-        for elem in self {
-            uniques.insert(Hashed(element: elem, id: identify(elem)))
+        for (index, elem) in self.enumerated() {
+            uniques.insert(Hashed(element: elem, id: identify(elem), origIndex: index))
         }
-        return uniques.map(\.element)
+        return uniques.sorted(by: { $0.origIndex < $1.origIndex }).map(\.element)
     }
 }
 
@@ -27,6 +27,7 @@ extension Array where Element: Hashable {
 fileprivate struct Hashed<Element, ID: Hashable>: Hashable {
     let element: Element
     let id: ID
+    let origIndex: Int
     
     static func ==(lhs: Self, rhs: Self) -> Bool {
         return lhs.id == rhs.id

TuskerTests/ArrayUniqueTests.swift

@@ -19,6 +19,12 @@ final class ArrayUniqueTests: XCTestCase {
         XCTAssertEqual([a, b].uniques(by: \.string), [a])
     }
     
+    func testUniquesOrder() {
+        let a = Test(string: "a")
+        let b = Test(string: "b")
+        XCTAssertEqual([a, b].uniques(), [a, b])
+    }
+    
     class Test: NSObject {
         let id = UUID()
         let string: String