Module sgr 

Select Graphic Rendition (SGR) writer.

Category

SGR is the CSI m family used for rendition attributes such as reset, intensity, underline, foreground color, and background color. Higher-level style construction lives outside this module; this module writes the raw parameter grammar.

Parameter conventions

The outer slice in write_sgr becomes semicolon-separated primary parameters. Each inner slice becomes colon-separated subparameters, allowing both classic SGR and colon-form color parameters.

Mode interaction

SGR attributes are not enabled by a separate mode. They change the terminal’s active rendition state until another SGR sequence resets or modifies it.

Functions

write_sgr

Write an SGR sequence using semicolon-separated groups and colon-separated subparameters.