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| <h5 class="subsubsection">17.4.9.4 Other Special Characters</h5> |
| |
| <p>These special characters exist only in BSD systems and the GNU system. |
| |
| <!-- termios.h --> |
| <!-- BSD --> |
| <div class="defun"> |
| — Macro: int <b>VLNEXT</b><var><a name="index-VLNEXT-1986"></a></var><br> |
| <blockquote><p><a name="index-LNEXT-character-1987"></a>This is the subscript for the LNEXT character in the special control |
| character array. <var>termios</var><code>.c_cc[VLNEXT]</code> holds the character |
| itself. |
| |
| <p>The LNEXT character is recognized only when <code>IEXTEN</code> 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 |
| <kbd>C-q</kbd> command in Emacs. “LNEXT” stands for “literal next.” |
| |
| <p>The LNEXT character is usually <kbd>C-v</kbd>. |
| </p></blockquote></div> |
| |
| <!-- termios.h --> |
| <!-- BSD --> |
| <div class="defun"> |
| — Macro: int <b>VDISCARD</b><var><a name="index-VDISCARD-1988"></a></var><br> |
| <blockquote><p><a name="index-DISCARD-character-1989"></a>This is the subscript for the DISCARD character in the special control |
| character array. <var>termios</var><code>.c_cc[VDISCARD]</code> holds the character |
| itself. |
| |
| <p>The DISCARD character is recognized only when <code>IEXTEN</code> 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. |
| </p></blockquote></div> |
| |
| <!-- termios.h --> |
| <!-- BSD --> |
| <div class="defun"> |
| — Macro: int <b>VSTATUS</b><var><a name="index-VSTATUS-1990"></a></var><br> |
| <blockquote><p><a name="index-STATUS-character-1991"></a>This is the subscript for the STATUS character in the special control |
| character array. <var>termios</var><code>.c_cc[VSTATUS]</code> holds the character |
| itself. |
| |
| <p>The STATUS character's effect is to print out a status message about how |
| the current process is running. |
| |
| <p>The STATUS character is recognized only in canonical mode, and only if |
| <code>NOKERNINFO</code> is not set. |
| </p></blockquote></div> |
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