Re: stty: problem if IXON enabled and DC3 char was received

[Tomas Krcka]

On 01/04/2016 04:10 PM, Jim Meyering wrote:
> On Mon, Jan 4, 2016 at 7:07 AM, Bernhard Voelker
> <address@hidden> wrote:
>> On 01/04/2016 01:34 PM, Pádraig Brady wrote:
>>> --- a/NEWS
>>> +++ b/NEWS
>>> @@ -47,6 +47,9 @@ GNU coreutils NEWS
>>> -*- outline -*-
>>>     is reusable by most shells, with non-printable characters escaped
>>>     with the POSIX proposed $'...' syntax.
>>>
>>> +  stty now supports the -i, --immediate option, to apply settings
>>> +  without waiting for transmission of any pending output.
>>> +
>>
>> s/-i/-I/
>>
>>> --- a/src/stty.c
>>> +++ b/src/stty.c
>> ...
>>> @@ -522,7 +523,7 @@ usage (int status)
>>>     else
>>>       {
>>>         printf (_("\
>>> -Usage: %s [-F DEVICE | --file=DEVICE] [SETTING]...\n\
>>> +Usage: %s [-F DEVICE | --file=DEVICE] [-I] [SETTING]...\n\
>>>     or:  %s [-F DEVICE | --file=DEVICE] [-a|--all]\n\
>>>     or:  %s [-F DEVICE | --file=DEVICE] [-g|--save]\n\
>>>   "),
>>> @@ -538,6 +539,9 @@ Print or change terminal characteristics.\n\
>>>     -g, --save         print all current settings in a stty-readable
>>> form\n\
>>>     -F, --file=DEVICE  open and use the specified DEVICE instead of
>>> stdin\n\
>>>   "), stdout);
>>> +      fputs (_("\
>>> +  -i, --immediate    apply setting without waiting for pending
>>> transmission\n\
>>> +"), stdout);
>>
>> Likewise.
>>
>> Otherwise +1.
> Patch looks fine.
> You might want to add a URL linking to this discussion in the commit log;
> it provides a fine "why would I want this" use case.
Patch is OK, just change -i to capital -I in help as Berny mentioned.
And I would also append the use case (scenario) when it's good to use it.
I spent a lots of time to find out where was the problem, so it can help 
someone.