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readline: fix remembered column in multiline#64126
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When moving the cursor vertically past a line too short to hold the current column, the column is remembered and restored on a later, longer line. The remembered column is a visual column that includes the continuation prompt width, but it was compared against the raw target line length, so columns in the (length, length + promptLen) range wrongly clamped to the end of the line instead of being restored. Signed-off-by: Daijiro Wachi <daijiro.wachi@gmail.com>
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When moving the cursor vertically past a line too short to hold the current column, the column is remembered and restored on a later, longer line. The remembered column is a visual column that includes the continuation prompt width, but it was compared against the raw target line length, so columns in the (length, length + promptLen) range wrongly clamped to the end of the line instead of being restored.