[haiku-bugs] Re: [Haiku] #3164: Bug in terminal when using curses app over ssh
- From: "siarzhuk" <trac@xxxxxxxxxxxx>
- Date: Fri, 08 Feb 2013 21:16:07 -0000
#3164: Bug in terminal when using curses app over ssh
-------------------------------------+---------------------------
Reporter: noisetonepause | Owner: siarzhuk
Type: bug | Status: assigned
Priority: normal | Milestone: R1
Component: Applications/Terminal | Version: R1/pre-alpha1
Resolution: | Keywords: gci2011
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
-------------------------------------+---------------------------
Comment (by siarzhuk):
Replying to [comment:7 bonefish]:
> In case this issue still exists, please compare the environment
variables of the telnet and the ssh sessions. It is possible that ssh
forwards less or more variables from the local host.
Environment is identical besides of SSH-specific variables. But I found a
bit more interesting comparing
{{{
stty -a
}}}
output in the ssh and telnet sessions.
SSH:
{{{
[zzbsd]/home/zharik % stty -a
[22:07]
speed 9600 baud; 39 rows; 134 columns;
lflags: icanon isig -iexten echo echoe -echok -echoke echonl -echoctl
-echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo
-extproc
iflags: -istrip icrnl -inlcr -igncr -ixon -ixoff -ixany imaxbel -ignbrk
brkint -inpck -ignpar -parmrk
oflags: opost onlcr -ocrnl tab0 -onocr -onlret
cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow
-dtrflow -mdmbuf
cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = ^@; eol2 = ^@;
erase = ^?; erase2 = ^H; intr = ^C; kill = ^U; lnext = ^V;
min = 1; quit = ^\; reprint = ^R; start = ^S; status = ^T;
stop = ^Q; susp = ^Z; time = 0; werase = ^W;
}}}
Telnet:
{{{
[zzbsd]/home/zharik % stty -a
[22:06]
speed 9600 baud; 39 rows; 134 columns;
lflags: icanon isig iexten echo echoe -echok echoke -echonl echoctl
-echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo
-extproc
iflags: -istrip icrnl -inlcr -igncr ixon -ixoff ixany imaxbel -ignbrk
brkint -inpck -ignpar -parmrk
oflags: opost onlcr -ocrnl tab0 -onocr -onlret
cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow
-dtrflow -mdmbuf
cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = <undef>;
eol2 = <undef>; erase = ^?; erase2 = ^H; intr = ^C; kill = ^U;
lnext = ^V; min = 1; quit = ^\; reprint = ^R; start = ^Q;
status = ^T; stop = ^S; susp = ^Z; time = 0; werase = ^W;
}}}
Note the difference in '''echonl''' local flag. It is set for ssh session
but disabled for telnet one. Obviously I have issued '''"stty -echonl"'''
command in ssh session and the issue is not observed in this session
anymore. Looks like it was the source of this problem.
The question, before I dig into it deeply some time in the future, has
anybody quick ideas how to fix it permanently?
PS:Note that lot of flags fior telnet and ssh are different and even
undefined like eol/eol2 for telnet sessions. Is it OK at all?
--
Ticket URL: <http://dev.haiku-os.org/ticket/3164#comment:10>
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