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Modern Tui TuiSetAmbiguousWide
Paul Squires edited this page Oct 19, 2026
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Home › Terminal TUI Library › Unicode Width › TuiSetAmbiguousWide
Sets whether characters of ambiguous width count as two columns, for CJK terminals.
TuiSetAmbiguousWide( byval on_ as boolean )Switches the 179 East Asian AMBIGUOUS ranges between 1 and 2 columns. Narrow is the default, which is right for a Western terminal and wrong in a CJK locale. It is GLOBAL on purpose -- a per-call parameter would have to be threaded through every widget.
#import "std/tui"
using tui
print TuiCharWidth( &h00A1 ) '' 1 -- INVERTED EXCLAMATION MARK, ambiguous
TuiSetAmbiguousWide( TRUE )
print TuiCharWidth( &h00A1 ) '' 2 -- now measured as a CJK terminal does
TuiSetAmbiguousWide( FALSE ) '' put it backTuiCharWidth · TuiStringWidth · TuiTruncate · TuiWrap · TuiAmbiguousWide
Library: Terminal TUI Library
Category: Terminal TUI Library
Documented under: Unicode Width
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