From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.17.10]) by sourceware.org (Postfix) with ESMTPS id F286B3971838 for ; Tue, 16 Feb 2021 10:38:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org F286B3971838 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=towo.net Authentication-Results: sourceware.org; spf=none smtp.mailfrom=towo@towo.net Received: from [192.168.178.72] ([91.65.218.78]) by mrelayeu.kundenserver.de (mreue106 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MUog3-1lKWTQ2bir-00Qo2x for ; Tue, 16 Feb 2021 11:38:41 +0100 Subject: Re: Cygwin doesn't handle SIGWINCH properly in Windows Terminal To: cygwin@cygwin.com References: <20210214174358.f828f285a566846254c3c54a@nifty.ne.jp> <60298BB0.1070301@tlinx.org> <20210215090543.afa8fac6ebec42faa471a5c6@nifty.ne.jp> <602B2B20.1030003@tlinx.org> <1d266c7d-4915-8ff9-069a-04c1f5226eab@gmail.com> <92a91e86-780f-e0de-8db2-04e89af3f7d7@towo.net> From: Thomas Wolff Message-ID: <87e0eca8-718d-f551-cc6c-464392e5dc5f@towo.net> Date: Tue, 16 Feb 2021 11:38:47 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <92a91e86-780f-e0de-8db2-04e89af3f7d7@towo.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:Gk42gw1pkLBL/I/J1b6qC1t33Z8DBekq7jw+cAkcnn/mEMwzLe3 KpjYgWroorO77PzDWFsNXd6n1gSD6hDwxof+Pmvnt8msJzn3UPBFBVU5Dz2pKFNz8l7KEHW xa7KNnTc5W/S1uwvCVdItW68Uy8KuNk4LcY/JTCAlzj1UiDz+CiynyJ9bQTFLBdUZ69MDkK 01ZuMgBMQXMIdmrBuBl3Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:soGdgbcaoN8=:ocRfug1MfK4bxkauecMVhh /PV/CKnoz6celOwq8+4B0ammbTDEOkFRkmKcQ2LBgn/1KhoEzX/g+wZ5HsVeqHKbNOMZRJyCL eVjQox03dCuesYAkZN1UHWbVLoYTwYwcyDs4xUgg5mU3jKSs61NLKu0Tg53G+qmC6LTcNd9A3 7lS3ztuYmXBHmsHYLRPOwuu/OpPYNiKDHDnKN9QhiNnz/s/QZsu8PCsVXxPwyoOBPK+xWvMkS KQQEdxKPWuQhlfqTu4i6w/cKFtlbokjQ8gYLsU8GRTZAPrdBbHsQF3vjEvYGe5q74jSfJ4MNe 1ogwCEHTI24RgkIcY6/aEzYgw+c/q4uSARMF0XArHPzID501+B42hDeeh9cGi+5cY212PcCjx 3ma/voC+RBJxVlVgUkvMhzBiQHQqjKve0q1XDNXsO6Rcre6eV6DsXuEt3iQ5/ X-Spam-Status: No, score=0.0 required=5.0 tests=BAYES_00, BODY_8BITS, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Feb 2021 10:38:44 -0000 Am 16.02.2021 um 11:26 schrieb Thomas Wolff: > > Am 16.02.2021 um 07:20 schrieb Brian Inglis: >> On 2021-02-15 22:48, Marco Atzeri via Cygwin wrote: >>> On 16.02.2021 03:17, L A Walsh wrote: >>>> On 2021/02/14 16:05, Takashi Yano wrote: >>>>> On Sun, 14 Feb 2021 12:44:32 -0800 >>>>> L A Walsh wrote: >>>>>> showsize () {\ >>>>>>   declare s=$(stty size); s="(${s// /x})"  ;\ >>>>>>   printf "%s" "$s${s//?/$'\b'}"       ;\ >>>>>> }; export -f showsize >>>>>> >>>>>> trap showsize SIGWINCH > I have a similar trap in my .bashrc and it's being triggered when > running bash from either cmd (conhost) or Windows Terminal and > resizing them. Did I miss something in this issue? Yes I did. Sorry for the fuss. > >> >>>>> What do you mean by "reset LINES/COLUMNS"? I am not sure what >>>>> is the behaviour diffrence in Linux and cygwin you mentioned. >> >>>>      Actually not sure I can reproduce this now.  The only >>>> thing I am noticing is that if bash is attached to /dev/pts3 >>>> (as in mintty), it works, but if attached to /dev/cons0 (as in >>>> cmd.exe), nothing works as no signal is propagated from >>>> the window resize to running program. >>>> >>>>      AFAIK, though, that's always been one of multiple probs in >>>> using windows cmd with a bash shell. >> >>> maybe this is waht you are looking for: >>> >>> # This causes bash to check the terminal size after every command >>> # and adjusts $LINES and $COLUMNS to the correct values. >>> shopt -s checkwinsize >> >> Newer bash man pages say this is the default; set in my .bashrc so I >> can't tell; bash man pages also say COLUNS and LINES are set on >> SIGWINCH if interactive: >> >> $ man bash | egrep -A1 'COLUMNS|LINES|checkwinsize' >> COLUMNS >>     Used by the select compound command to determine the terminal >> width when >>     printing selection lists. Automatically set if the checkwinsize >> option >>     is enabled or in an interactive shell upon receipt of a SIGWINCH. >> -- >> LINES    Used by the select compound command to determine the column >> length for >>     printing selection lists. Automatically set if the checkwinsize >> option >>     is enabled or in an interactive shell upon receipt of a SIGWINCH. >> -- >> checkwinsize >>     If set, bash checks the window size after each command and, if >>     necessary, updates the values of LINES and COLUMNS. >> > > -- > Problem reports:      https://cygwin.com/problems.html > FAQ:                  https://cygwin.com/faq/ > Documentation:        https://cygwin.com/docs.html > Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple