Path: csiph.com!weretis.net!feeder6.news.weretis.net!4.us.feeder.erje.net!2.eu.feeder.erje.net!3.eu.feeder.erje.net!feeder.erje.net!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: Robert Elz Newsgroups: gnu.bash.bug Subject: Re: Fwd: Don't set $?=130 when discarding the current command line (not run yet) with CTRL-C? Date: Thu, 21 Nov 2019 14:42:07 +0700 Lines: 21 Approved: bug-bash@gnu.org Message-ID: References: <11624.1574322127@jinx.noi.kre.to> NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: usenet.stanford.edu 1574322183 15090 209.51.188.17 (21 Nov 2019 07:43:03 GMT) X-Complaints-To: action@cs.stanford.edu Cc: "bash.bug list" To: Clark Wang Envelope-to: bug-bash@gnu.org In-Reply-To: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 2001:3c8:9009:181::2 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <11624.1574322127@jinx.noi.kre.to> X-Mailman-Original-References: Xref: csiph.com gnu.bash.bug:15622 Date: Thu, 21 Nov 2019 10:27:08 +0800 From: Clark Wang Message-ID: | So is it OK to not change $? when people are pressing CTRL-C to | discard the input? I would say not only "OK" but "required" - $? should only ever be changed as a result of command execution (or attempted execution in case the exec, or redirection, or something, fails). Even if there's a SIGINT trap handler that runs commands, $? should not be being altered merely as a result of a SIGINT, only when that SIGINT causes a command to abort, in which case that command's exit status (which will be 128+SIGINT .. typically 130 .. when the SIGINT wasn't caught by the application) should $? be altered. Of course, Chet might disagree... kre