Synopsis:
   $stripansicodes(<text>)

Technical:
   This function will "normalize" <text> in two ways, according to the value
   of the set(4) DISPLAY_ANSI variable.
   
   If DISPLAY_ANSI is ON, all ANSI escape codes will be either converted into
   logical codes (^C colors, ^B bolds, etc) or removed entirely.
   
   If DISPLAY_ANSI is OFF, the escape will be mangled into a reverse '['
   character, and the rest of the code is left intact.

Returns:
   <text> with its ANSI sequences processed according to the value of
   DISPLAY_ANSI

See Also:
   set(4) display_ansi; strip(6); stripansi(6); stripc(6); printlen(6)