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While DECDHL/DECDWL lines are not wrapped at the correct column, now at least reflowing doesn't clear line rendition attributes, so resizing Konsole and going back to the original size always recovers the original content, including double-height/double-width status of each line. Reflowing double-height lines doesn't make much sense, since a double-height line actually consists of a top (T) and a bottom (B) line. Shrinking them could lead to TTBB lines, which look weird. At least now going back to the original size brings back the original content in all its glory.
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