Other Special Characters
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These special characters exist only in BSD systems and the GNU
system.
- Macro: int VLNEXT
This is the subscript for the LNEXT character in the special
control character array. `TERMIOS.c_cc[VLNEXT]' holds the
character itself.
The LNEXT character is recognized only when `IEXTEN' is set, but in
both canonical and noncanonical mode. It disables any special
significance of the next character the user types. Even if the
character would normally perform some editing function or generate
a signal, it is read as a plain character. This is the analogue
of the `C-q' command in Emacs. "LNEXT" stands for "literal next."
The LNEXT character is usually `C-v'.
- Macro: int VDISCARD
This is the subscript for the DISCARD character in the special
control character array. `TERMIOS.c_cc[VDISCARD]' holds the
character itself.
The DISCARD character is recognized only when `IEXTEN' is set, but
in both canonical and noncanonical mode. Its effect is to toggle
the discard-output flag. When this flag is set, all program
output is discarded. Setting the flag also discards all output
currently in the output buffer. Typing any other character resets
the flag.
- Macro: int VSTATUS
This is the subscript for the STATUS character in the special
control character array. `TERMIOS.c_cc[VSTATUS]' holds the
character itself.
The STATUS character's effect is to print out a status message
about how the current process is running.
The STATUS character is recognized only in canonical mode, and
only if `NOKERNINFO' is not set.