Fix BackwardKillLine length calculation for multiline input (#5102)

Snowy117 · web-flow · commit e266ca6f67ab · 2026-03-11T13:23:22.000-07:00
diff --git a/PSReadLine/KillYank.cs b/PSReadLine/KillYank.cs
@@ -135,7 +135,7 @@ public static void BackwardKillInput(ConsoleKeyInfo? key = null, object arg = nu
         public static void BackwardKillLine(ConsoleKeyInfo? key = null, object arg = null)
         {
             var start = GetBeginningOfLinePos(_singleton._current);
-            _singleton.Kill(start, _singleton._current, true);
+            _singleton.Kill(start, _singleton._current - start, true);
         }
 
         /// <summary>
diff --git a/test/KillYankTest.cs b/test/KillYankTest.cs
@@ -119,6 +119,8 @@ public void BackwardKillLine()
             PSConsoleReadLine.SetKeyHandler(new[] { "Shift+Tab" }, PSConsoleReadLine.BackwardKillLine, "", "");
 
             Test("", Keys("dir", _.Shift_Tab));
+
+            Test("abc\n123", Keys("abc", _.Shift_Enter, "123", _.Shift_Tab, _.Ctrl_y));
         }
 
         [SkippableFact]

Original file line number	Diff line number	Diff line change
`@@ -135,7 +135,7 @@ public static void BackwardKillInput(ConsoleKeyInfo? key = null, object arg = nu`
`135`	`135`	`public static void BackwardKillLine(ConsoleKeyInfo? key = null, object arg = null)`
`136`	`136`	`{`
`137`	`137`	`var start = GetBeginningOfLinePos(_singleton._current);`
`138`		`- _singleton.Kill(start, _singleton._current, true);`
	`138`	`+ _singleton.Kill(start, _singleton._current - start, true);`
`139`	`139`	`}`
`140`	`140`
`141`	`141`	`/// <summary>`
Original file line number	Diff line number	Diff line change
`@@ -119,6 +119,8 @@ public void BackwardKillLine()`
`119`	`119`	`PSConsoleReadLine.SetKeyHandler(new[] { "Shift+Tab" }, PSConsoleReadLine.BackwardKillLine, "", "");`
`120`	`120`
`121`	`121`	`Test("", Keys("dir", _.Shift_Tab));`
	`122`	`+`
	`123`	`+ Test("abc\n123", Keys("abc", _.Shift_Enter, "123", _.Shift_Tab, _.Ctrl_y));`
`122`	`124`	`}`
`123`	`125`
`124`	`126`	`[SkippableFact]`