Path: csiph.com!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: worley@alum.mit.edu (Dale R. Worley) Newsgroups: gnu.bash.bug Subject: Re: hash -l with empty hash table prints to stdout Date: Tue, 16 Jun 2020 22:13:33 -0400 Lines: 14 Approved: bug-bash@gnu.org Message-ID: References: (chet.ramey@case.edu) <87o8pi4eya.fsf@hobgoblin.ariadne.com> NNTP-Posting-Host: lists.gnu.org X-Trace: usenet.stanford.edu 1592360022 14818 209.51.188.17 (17 Jun 2020 02:13:42 GMT) X-Complaints-To: action@cs.stanford.edu Cc: beluro@web.de, bug-bash@gnu.org, chet.ramey@case.edu To: chet.ramey@case.edu Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcastmailservice.net; s=20180828_2048; t=1592360015; bh=0hdj+0acw8KyZOf22BsLT9g50DXrTkLeNDiOKHCD+lc=; h=Received:Received:Received:Received:From:To:Subject:Date: Message-ID; b=NfAYRKXGebBBqLHyStAQNToIsT5TupQrWw6bVtg1y1P1Bymn4S53HQ361WZoQwpxj qWWXdaojepFAXmg2XrzQcU2yAgs2XVvgIluQW1D8HgoDGy9KrsddPMrL29/hwMBuWI S7FgIyHz8wzRR808lSzemln1dLvver73FfkEg0HjW6xV/sYpZSoRBL9MbEpFYa67kB c04kEkJb3vRbEllUDcKuWI+PsWqoEe+CwnTbegW/ZDYbJbRvao/+Ga2NMu92I6tKpq iRmKx97ShLJqxryY2brfb6CjxxfrjnqTC9tt392T4WZ9CheygJ9Vx4UtZqYNcLI6CE 9eEMNes1sp+AQ== X-Xfinity-VMeta: sc=0.00;st=legit X-Authentication-Warning: hobgoblin.ariadne.com: worley set sender to worley@alum.mit.edu using -f In-Reply-To: (chet.ramey@case.edu) Received-SPF: permerror client-ip=2001:558:fe21:29:69:252:207:39; envelope-from=worley@alum.mit.edu; helo=resqmta-ch2-07v.sys.comcast.net X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/16 22:13:36 X-ACL-Warn: Detected OS = ??? X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, T_SPF_PERMERROR=0.01, 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: <87o8pi4eya.fsf@hobgoblin.ariadne.com> Xref: csiph.com gnu.bash.bug:16392 What a weird problem! Yes, "hash -l" should produce output that can be read by bash. But sending the "bash: hash table empty" message to stderr put you in the situation where "hash -l >file" doesn't really leave the output of "hash -l" in "file". Maybe you could make the empty message be a comment? $ hash -l # hash: hash table empty That is acceptable input for bash, has the right effect when read by bash, is human-readable, and is capturable by redirecting stdout. Dale