commit ac8f05c45a65788523af7223b1a94e8baf890b6e
parent 02f3b37a2d354c74169f5ed038bb1cb6225d691a
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Sat, 6 Oct 2012 19:12:46 +0200
Add documentation to control codes
Add the documentation from the vt100 manual programmer:
Control Octal Action Taken
Character Code
-------------------------------------------
NUL 000 Ignored on input (not stored in input buffer;
see full duplex protocol).
ENQ 005 Transmit answerback message.
BEL 007 Sound bell tone from keyboard.
BS 010 Move the cursor to the left one character position,
unless it is at the left margin,
in which case no action occurs.
HT 011 Move the cursor to the next tab stop,
or to the right margin if no further tab stops
are present on the line.
LF 012 This code causes a line feed or
a new line operation. (See new line mode).
VT 013 Interpreted as LF.
FF 014 Interpreted as LF.
CR 015 Move cursor to the left margin on the current line.
SO 016 Invoke G1 character set, as designated by SCS
control sequence.
SI 017 Select G0 character set, as selected by ESC ( sequence.
XON 021 Causes terminal to resume transmission.
XOFF 023 Causes terminal to stop transmitted all codes
except XOFF and XON.
CAN 030 If sent during a control sequence, the sequence is
immediately terminated and not executed. It also causes
the error character to be displayed.
SUB 032 Interpreted as CAN.
ESC 033 Invokes a control sequence.
DEL 177 Ignored on input (not stored in input buffer).
--------------------------------------------
---
st.c | 28 +++++++++++++++++++---------
1 file changed, 19 insertions(+), 9 deletions(-)
Diffstat:
| st.c | | | 28 | +++++++++++++++++++--------- |
1 file changed, 19 insertions(+), 9 deletions(-)
diff --git a/st.c b/st.c
@@ -1789,32 +1789,42 @@ tputc(char *c, int len) {
write(iofd, c, len);
switch(ascii) {
- case '\t':
+ case '\t': /* HT */
tputtab(1);
return;
- case '\b':
+ case '\b': /* BS */
tmoveto(term.c.x-1, term.c.y);
return;
- case '\r':
+ case '\r': /* CR */
tmoveto(0, term.c.y);
return;
- case '\f':
- case '\v':
- case '\n':
+ case '\f': /* LF */
+ case '\v': /* VT */
+ case '\n': /* LF */
/* go to first col if the mode is set */
tnewline(IS_SET(MODE_CRLF));
return;
- case '\a':
+ case '\a': /* BEL */
if(term.esc & ESC_STR)
break;
-
if(!(xw.state & WIN_FOCUSED))
xseturgency(1);
return;
- case '\033':
+ case '\033': /* ESC */
csireset();
term.esc = ESC_START;
return;
+ case '\016': /* XXX: SO */
+ case '\017': /* XXX: SI */
+ case '\032': /* XXX: SUB */
+ case '\030': /* XXX: CAN */
+ default:
+ /* case '\005': ENQ (IGNORED) */
+ /* case '\000': NUL (IGNORED) */
+ /* case '\021': XON (IGNORED) */
+ /* case '\023': XOFF (IGNORED) */
+ /* case 0177: DEL (IGNORED) */
+ break;
}
if(term.esc & ESC_START) {
