X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:references:in-reply-to:content-type:content-transfer-encoding;
	 q=dns; s=default; b=ukJDNg4q10KSYaVKszuOLyDZ39maCHSMTeqLVATaSAH
	IJ72NIiv+9xxG+AF9pIWQ1R2RvQBIvjnv372EXCro+2sQehJDLQeVQEEdkZHEaIY
	aUoCH2ZbpyKZR7yneawX2ycvBuclCiFrKPa7Mxs5wedSdXmK+MSws0KON7ZlbyNA
	=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:references:in-reply-to:content-type:content-transfer-encoding;
	 s=default; bh=/oZw689CcwO8tL7TQm+uXMfOaPU=; b=WiQpi5Or4AveHFSc7
	2oVTKG9qEB3v07njXhpq4E4aipezP23DylzuCaOYBwxezI3Wfyt8+XbA4W11ZeI7
	JhxBRWZ9a8pq//bDZqR92bBuy/nITXnWtRS+LrY2x9GmzcUEs9AtImFQUL48Wk7e
	KYj78GMnCuRBIWCMEmbfeJ48e0=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
X-Spam-SWARE-Status: No, score=-2.3 required=5.0 tests=AWL,BAYES_05,KHOP_THREADED,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_YE,SPF_HELO_PASS autolearn=ham version=3.3.1
Message-ID: <5172FA88.6010001@towo.net>
Date: Sat, 20 Apr 2013 22:28:56 +0200
From: Thomas Wolff <towo AT towo DOT net>
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130328 Thunderbird/17.0.5
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: mintty and Control-` , Control-~
References: <CADd11yXqNrSfOEj4Lmf5KyVUL0TWkosEb=3yNprCyLLk_PK-iQ AT mail DOT gmail DOT com>	<514B2CEF DOT 3090100 AT cs DOT utoronto DOT ca> <CAHWeT-ay8NpcVV+z34wEvwd11LkT8L0ib+AiFE5gGmDT_F39VQ AT mail DOT gmail DOT com>
In-Reply-To: <CAHWeT-ay8NpcVV+z34wEvwd11LkT8L0ib+AiFE5gGmDT_F39VQ@mail.gmail.com>
X-TagToolbar-Keys: D20130420222856062
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Am 20.04.2013 22:14, schrieb Andy Koppe:
> On 21 March 2013 15:53, Ryan Johnson wrote:
>> On 21/03/2013 11:30 AM, Igor Bukanov wrote:
>>> It seems that mintty in Cygwin under Windows-7 does not pass C-`
>>> (Control-backtick, in US keyboard this is the key above the tab) nor
>>> C-~ (or Control-Shift-backtick) to terminal applications. Any reason
>>> for that?
>> A quick test [3] in shortcut override mode [1] suggests that mintty never
>> receives that key combination in the first place.
> Nah, it does receive it alright. Well, for me anyay. Shortcut override
> mode only affects combinations that mintty normally uses for its own
> purposes, for example Shift+Insert for paste.
>
>> However, trying the same test in xterm, I get \000 and \036 for C-` and C-~,
>> respectively. Neither of those seems to be correct [2] (\000 is ^@ and \036
>> is ^^)
> Indeed. Backtick and tilde don't directly correspond to control
> characters, so mintty doesn't send anything for them.
>
> What you can do is enable the so-called modifyOtherKeys mode (which
> comes from xterm), in which case mintty sends the keycodes specified
> on the following page for combinations that don't have a standard
> keycode:
>
> http://www.leonerd.org.uk/hacks/fixterms/
>
> The following will enable modifyOtherKeys mode level 1:
>
> $ echo -ne '\e[>4;1m'
>
> There's also a level 2, in which those special keycodes are sent even
> for standard combinations such as Ctrl+letter.
>
> $ echo -ne '\e[>4;2m'
>
>> but it's still odd that xterm can receive key codes that mintty misses.
> I guess I decided not to support those keycodes for Ctrl+` and Ctrl+~
> because they're not intuitive and they just send the same as Ctrl+@
> and Ctrl+^ (and also Ctrl+Space and Ctrl+Enter) anyway.
>
> In order to make them useful without enabling modifyOtherKeys mode,
> how about if Ctrl combinations with backtick (ASCII 0x60), opening and
> closing brace (0x7B and 0x7D), pipe (0x7C), and tilde (0x7E) were
> mapped to C1 control characters (in the U+0080 to U+009E range).
I don't think it's useful to support C1 control characters because 
virtually nobody will ever want to input them via keyboard;
even more if only a random subset of C1 can be supported this is only 
confusing.

> Incidentally, on US and UK keyboards (and others) that's what already
> happens for the braces and pipe symbol, because for example the pipe
> symbol is typed with Shift+\, and mintty maps Ctrl+Shift+\ to U+009C
> as explained at http://code.google.com/p/mintty/wiki/Keycodes#Ctrl.
I would drop those, too.

> I hope I've suitably confused matters now.
Yes :)
Thomas

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple