Cell represents the contents of a single character cell on screen,
or in some cases two adjacent cells. Terminals are expected to have a uniform
display width for each cell, and to have a fixed number of cell columsn and rows.
(We assume fixed pitch fonts.) The occasion when a double wide character is present
occurs for certain East Asian characters that require twice as much horizontal space
to display as others. (This can also occur with some emoji.)
Cell represents the contents of a single character cell on screen, or in some cases two adjacent cells. Terminals are expected to have a uniform display width for each cell, and to have a fixed number of cell columsn and rows. (We assume fixed pitch fonts.) The occasion when a double wide character is present occurs for certain East Asian characters that require twice as much horizontal space to display as others. (This can also occur with some emoji.)