Fix negative index

ActiveState · Sep 12, 2023 · ba23340 · ba23340
1 parent 6c6570d
commit ba23340
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/helpers_windows.go b/helpers_windows.go
@@ -35,7 +35,7 @@ func cleanPtySnapshot(snapshot []byte, cursorPos int, isPosix bool) ([]byte, int
 
 	newCursorPos := cursorPos
 	dropPos := func(pos int) {
-		if pos <= cursorPos {
+		if pos < cursorPos {
 			newCursorPos--
 		}
 	}

diff --git a/helpers_windows_test.go b/helpers_windows_test.go
@@ -86,6 +86,13 @@ func Test_cleanPtySequences(t *testing.T) {
 			[]byte("25h    25l █ Installing Runtime (Unconfigured)25h 25l █25h 25l █ Installing Runtime Environment25h 25l Setting Up Runtime       \n  Resolving Dependencies |25h"),
 			159,
 		},
+		{
+			"Escape at first character",
+			[]byte("\u001B[1mfoo"),
+			0,
+			[]byte("foo"),
+			0,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {