May 29, 2025 · May 29, 2025 · May 30, 2025 · May 30, 2025 · May 30, 2025 · May 30, 2025
diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py

        # Debug prompt is multilined....
        ncharsdeleted = 0
        have = len(chars.expandtabs(tabwidth))
        for i in range(len(chars) - 1, -1, -1):
            have = len(chars.expandtabs(tabwidth))
            if have <= want or chars[i] not in " \t":
                break
            # ``Delete'' chars[i], and subtract count
            # (since redoing expandtabs is O(n))
            ncharsdeleted += 1
            if chars[i] == '\t':
                have -= tabwidth
            else:
                have -= 1
            if have <= want or chars[i-1] not in " \t":
                break
        # Perform the actual removal
        chars = chars[:len(chars) - ncharsdeleted]

        text.undo_block_start()
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1368,11 +1368,18 @@ def smart_backspace_event(self, event):

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		# Debug prompt is multilined....
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		ncharsdeleted = 0
		have = len(chars.expandtabs(tabwidth))
		for i in range(len(chars) - 1, -1, -1):
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		have = len(chars.expandtabs(tabwidth))
		if have <= want or chars[i] not in " \t":
		break
		# ``Delete'' chars[i], and subtract count
		# (since redoing expandtabs is O(n))
		ncharsdeleted += 1
		if chars[i] == '\t':
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		have -= tabwidth
		else:
		have -= 1
		if have <= want or chars[i-1] not in " \t":
		break
		# Perform the actual removal
		chars = chars[:len(chars) - ncharsdeleted]

		text.undo_block_start()
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