Path: csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: =?UTF-8?B?UmU6IOKAmGNvbW1hbmQg4oCmICbigJkgY3JlYXRlcyBzdWJzaGVsbA==?= Date: Tue, 30 Jun 2020 12:40:05 -0400 Organization: ITS, Case Western Reserve University Lines: 25 Approved: bug-bash@gnu.org Message-ID: References: Reply-To: chet.ramey@case.edu NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: usenet.stanford.edu 1593535216 14798 209.51.188.17 (30 Jun 2020 16:40:16 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: Dmitry Alexandrov , bug-bash@gnu.org Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1593535211; bh=4mvgJz8scnPIF3Ux4bycnU9qNc+TklL/fSIEIuSLils=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; 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envelope-from=chet.ramey@case.edu; helo=mpv4-2015.case.edu X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/30 12:40:08 X-ACL-Warn: Detected OS = Linux 2.4.x-2.6.x [generic] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: X-Mailman-Original-References: Xref: csiph.com gnu.bash.bug:16500 On 6/29/20 4:33 PM, Dmitry Alexandrov wrote: > Dear maintainer, > > I believe, that the current behaviour of GNU Bash: > > $ command cat & > [1] 3831 > $ ps --pid $! --ppid $! > PID TTY TIME CMD > 3831 pts/3 00:00:00 bash > 3832 pts/3 00:00:00 cat > > is problematic. Namely it is: > > 1) unexpected, as (a) it does not seem to be documented, (b) itʼs counter-intuitive and (c) other bourne-like shells (busybox ash, dash, ksh93, mksh, zsh) does not do that; It's an opportunity for optimization, not a bug, since the results are correct. -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/