fix: トリガーがされない問題を修正

Author: ensan-hcl

Core/Sources/Core/InputUtils/SegmentsManager.swift

@@ -371,17 +371,6 @@ public final class SegmentsManager {
             }
             return
         }
-        let currentBestCandidateText = self.rawCandidates?.mainResults.first?.text ?? self.rawCandidatesList?.first?.text
-        let shouldTriggerTypoCorrection = Self.shouldTriggerBackspaceTypoCorrection(
-            deleteCount: count,
-            currentBestCandidateText: currentBestCandidateText,
-            currentInput: currentInput
-        )
-        guard shouldTriggerTypoCorrection else {
-            self.backspaceAdjustedPredictionCandidate = nil
-            self.backspaceTypoCorrectionLock = nil
-            return
-        }
         self.backspaceTypoCorrectionLock = self.lmBasedBackspaceTypoCorrectionLock(previousComposingText: beforeComposingText)
         if let lock = self.backspaceTypoCorrectionLock {
             self.backspaceAdjustedPredictionCandidate = Self.makeBackspaceTypoCorrectionPredictionCandidate(
@@ -953,16 +942,6 @@ public final class SegmentsManager {
         return .init(displayText: displayText, appendText: operation.appendText, deleteCount: operation.deleteCount)
     }
 
-    static func shouldTriggerBackspaceTypoCorrection(deleteCount: Int, currentBestCandidateText: String?, currentInput: String) -> Bool {
-        guard deleteCount == 1 else {
-            return false
-        }
-        if let currentBestCandidateText, currentBestCandidateText == currentInput {
-            return false
-        }
-        return true
-    }
-
     private static func makeSuffixEditOperation(from currentText: String, to targetText: String) -> (appendText: String, deleteCount: Int)? {
         let sharedPrefixLength = zip(currentText, targetText).prefix(while: ==).count
         let deleteCount = currentText.count - sharedPrefixLength

Core/Tests/CoreTests/InputUtilsTests/SegmentsManagerPredictionBackspaceCorrectionTests.swift

@@ -1,36 +1,6 @@
 @testable import Core
 import Testing
 
-@Test func testShouldTriggerBackspaceTypoCorrectionReturnsFalseWhenBestCandidateMatchesCurrentInput() async throws {
-    let shouldTrigger = SegmentsManager.shouldTriggerBackspaceTypoCorrection(
-        deleteCount: 1,
-        currentBestCandidateText: "くだし",
-        currentInput: "くだし"
-    )
-
-    #expect(shouldTrigger == false)
-}
-
-@Test func testShouldTriggerBackspaceTypoCorrectionReturnsTrueWhenBestCandidateDiffersFromCurrentInput() async throws {
-    let shouldTrigger = SegmentsManager.shouldTriggerBackspaceTypoCorrection(
-        deleteCount: 1,
-        currentBestCandidateText: "下さい",
-        currentInput: "くだし"
-    )
-
-    #expect(shouldTrigger == true)
-}
-
-@Test func testShouldTriggerBackspaceTypoCorrectionReturnsFalseWhenDeleteCountIsNotOne() async throws {
-    let shouldTrigger = SegmentsManager.shouldTriggerBackspaceTypoCorrection(
-        deleteCount: 2,
-        currentBestCandidateText: "下さい",
-        currentInput: "くだし"
-    )
-
-    #expect(shouldTrigger == false)
-}
-
 @Test func testMakeBackspaceTypoCorrectionPredictionCandidateRecalculatesEditOperationForCurrentInput() async throws {
     let candidate = SegmentsManager.makeBackspaceTypoCorrectionPredictionCandidate(
         currentInput: "くだし",