Hello! While perusing various termios(3) and termios(4) manpages (as one does)
I noticed the following inconsistency for ONLRET. FreeBSD and NetBSD say
this:
If ONLRET is set, the NL character is assumed to do the carriage-return
function; the column pointer will be set to 0.
OpenBSD says this:
If ONLRET is set, NL also performs CR on output, and reset current column
to 0.
POSIX says this:
NL performs CR function.
The current Linux manpage says this (!):
Don't output CR.
Perhaps I'm misunderstanding the purpose of this flag, but (if nothing else) the
constrast here is a little confusing. It looks like Linux follows the same
behavior as all the other platforms:
$ stty -icanon -onlcr -icrnl -echo onlret onocr; cat
this is some text (^J pressed)
and some more (^M pressed before additional text)
Comments? OK?
---
man3/termios.3 | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/man3/termios.3 b/man3/termios.3
index c11937458..20641f14d 100644
--- a/man3/termios.3
+++ b/man3/termios.3
@@ -203,7 +203,9 @@ Map CR to NL on output.
Don't output CR at column 0.
.TP
.B ONLRET
-Don't output CR.
+The NL character is assumed to do the carriage-return function;
+the kernel's idea of the current column is set to 0
+after both NL and CR.
.TP
.B OFILL
Send fill characters for a delay, rather than using a timed delay.
--
2.34.0
