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# Double Width
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The code to decide whether a unicode codepoint should be rendered double-width
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is generated from the Unicode specification.
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This is done by using `tools/unicode_dbl_width.py`.
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1. Download <https://www.unicode.org/Public/UCD/latest/ucdxml/ucd.all.flat.zip>
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2. Extract it
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3. Run `tools/unicode_dbl_width.py ucd.all.flat.xml src/bin/termptydbl.h src/bin/termptydbl.c`_
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4. Commit the files modified
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