The namespace fiber::utf8_lines offers beautiful UTF-8 lines and borders.

Lines are defined as:

constexpr std::string_view xxx = "<line>";

where xxx is one of the following descriptions.

If you are using CMake, UTF8 codes are enabled by default. If your terminal does not support UTF-8 characters you can disable them by stting the following CMake or equally named compiler definition:

set(FIBER_DISABLE_UTF8_CODES=ON)

Single Line Drawing Characters

Description	UTF-8 Code	ASCII Alternative
`single_vertical`	`"│"`	`"\|"`
`single_horizontal`	`"─"`	`"-"`
`single_corner_topleft`	`"┌"`	`"+"`
`single_corner_topright`	`"┐"`	`"+"`
`single_corner_botleft`	`"└"`	`"+"`
`single_corner_botright`	`"┘"`	`"+"`
`single_t_up`	`"┬"`	`"+"`
`single_t_down`	`"┴"`	`"+"`
`single_t_left`	`"├"`	`"+"`
`single_t_right`	`"┤"`	`"+"`
`single_cross`	`"┼"`	`"+"`

Double Line Drawing Characters

Description	UTF-8 Code	ASCII Alternative
`double_horizontal`	`"═"`	`"-"`
`double_vertical`	`"║"`	`"\|"`
`double_corner_topleft`	`"╔"`	`"+"`
`double_corner_topright`	`"╗"`	`"+"`
`double_corner_botleft`	`"╚"`	`"+"`
`double_corner_botright`	`"╝"`	`"+"`
`double_t_up`	`"╦"`	`"+"`
`double_t_down`	`"╩"`	`"+"`
`double_t_left`	`"╠"`	`"+"`
`double_t_right`	`"╣"`	`"+"`
`double_cross`	`"╬"`	`"+"`

Mixed Single/Double Line Characters

Description	UTF-8 Code	ASCII Alternative
`mixed_corner_topleft`	`"╒"`	`"+"`
`mixed_corner_topright`	`"╕"`	`"+"`
`mixed_corner_botleft`	`"╘"`	`"+"`
`mixed_corner_botright`	`"╛"`	`"+"`
`mixed_t_up`	`"╤"`	`"+"`
`mixed_t_down`	`"╧"`	`"+"`
`mixed_t_left`	`"╞"`	`"+"`
`mixed_t_right`	`"╡"`	`"+"`
`mixed_cross`	`"╪"`	`"+"`

Light Line Variants

similar to single, but sometimes spaced differently

Description	UTF-8 Code	ASCII Alternative
`light_horizontal`	`"─"`	`"-"`
`light_vertical`	`"│"`	`"-"`
`light_corner_topleft`	`"┌"`	`"+"`
`light_corner_topright`	`"┐"`	`"+"`
`light_corner_botleft`	`"└"`	`"+"`
`light_corner_botright`	`"┘"`	`"+"`

Heavy Line Drawing Characters

Description	UTF-8 Code	ASCII Alternative
`heavy_horizontal`	`"━"`	`"-"`
`heavy_vertical`	`"┃"`	`"\|"`
`heavy_corner_topleft`	`"┏"`	`"+"`
`heavy_corner_topright`	`"┓"`	`"+"`
`heavy_corner_botleft`	`"┗"`	`"+"`
`heavy_corner_botright`	`"┛"`	`"+"`
`heavy_t_up`	`"┳"`	`"+"`
`heavy_t_down`	`"┻"`	`"+"`
`heavy_t_left`	`"┣"`	`"+"`
`heavy_t_right`	`"┫"`	`"+"`
`heavy_cross`	`"╋"`	`"+"`

Rounded Corners

usually used with light lines

Description	UTF-8 Code	ASCII Alternative
`rounded_corner_topleft`	`"╭"`	`"+"`
`rounded_corner_topright`	`"╮"`	`"+"`
`rounded_corner_botleft`	`"╰"`	`"+"`
`rounded_corner_botright`	`"╯"`	`"+"`