Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > gnu.bash.bug > #16384

Re: hash -l with empty hash table prints to stdout

Path csiph.com!goblin3!goblin.stu.neva.ru!panix!usenet.stanford.edu!not-for-mail
From Chet Ramey <chet.ramey@case.edu>
Newsgroups gnu.bash.bug
Subject Re: hash -l with empty hash table prints to stdout
Date Tue, 16 Jun 2020 09:30:19 -0400
Organization ITS, Case Western Reserve University
Lines 24
Approved bug-bash@gnu.org
Message-ID <mailman.1976.1592314236.2541.bug-bash@gnu.org> (permalink)
References <20200615204717.GB28118@jar> <bd77214b-2690-f5de-a814-108e5be8b6f1@case.edu>
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 7bit
X-Trace usenet.stanford.edu 1592314236 17172 209.51.188.17 (16 Jun 2020 13:30:36 GMT)
X-Complaints-To action@cs.stanford.edu
Cc chet.ramey@case.edu
To beluro@web.de, 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=1592314232; bh=LGXM1jPKR6fJyd/byDk4aZ/4RZgE8Hft9nLDH/KeEA0=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=U0rpo9a0PEyj2Hvf4rA3BfjmFup35G5uLivlESg96afH+lpfwzFTbcVEOvwV/CQ/tx X8OgoCI6gX7fGEHWpbDwtaDLTSmPT1inmAtxsaOeyg8dxOD4bPKfuREL7i8Uh91c+GU zP/0AJ9Tks9Q8CBGJLCHTqhbhlN1MhHYB4H0xa9SHqtZ0lRIQb0WWu/OoDje/xwqhKt I82d7NvEDMmLe8sIuKw9XJZf82ZNC2JLfJDuJ3acw4Fvbe8khyiU1w8uCrzgUGAwTEg FPt9MHQe/CPi61hNLKKAORUlX/mjUNca31LPTxY+Em2vNk698Rb4gie8pij2OOphnvQ vwdBIhiQ==
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1592314231; bh=IXv54dbSELlQPpMrsxF0nNDMm1UFGWks2ByodzV1UsQ=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=zS0yYy7hQ05tGJS2xy+APlZaXH35kTyLUVijhRGIMnWhOcHWF6Wvia+xVQP6GersR7 rhXFaPNypr83MltLQO48FqNf4RgvPuvG99vlLgXjrh/2HBRDUtHPMfwuXIgAUm1/kTv 39/31XsSNLirfe734BnXbJQl4qr3qfJkG9Kcxdvp7RnlxnvpcTQlH4kqE7r+JU3H33r 1/N1+XCvQBsaqwIw5GRkMJAoRrMYKrJhPSaNjV+gglVBUJxuQ6gHphgG2Bu/0RWHl8d pCnNO0GVut2IPFUxAtz+HN62SEUhiwMh9urqTD6LS5WC9p4D24QJHFtyniu+R1+i9tJ ndHG5vWw==
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=g-case; h=reply-to:cc:subject:to:references:from:autocrypt:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=IXv54dbSELlQPpMrsxF0nNDMm1UFGWks2ByodzV1UsQ=; b=Z/K7xl8PldkjcW13cNzATg7d8iV1fhWKQEi7HfRI5vF9+oJQUGaBmnvVKQIDAcVust idakafvfen+B2S3bqeVmA9uwKZeDDQ7BH5IzFPovvidgC34csY78K8zhaVVHf9C88OlI iq2XpiBft4ThZmxRt8Mhw5LdCsJWFp2yaacdaZEehJZRvBoXAWIkchyc99JTSsr+LjOZ p6yIPvz6abDaYgVXdrWov3Qe4iWyQB6o/7/RCw3oDH51NSSwI16ITs/F1Q8G4fFsYL1q 44/eQAS+h8j36adQ4Dm0/PCDY5N1BhWljDiRlc0EgE8Ms5R35AyyiVV8AOZWCJ2Jus+a 6+DA==
X-Google-DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:cc:subject:to:references:from:autocrypt :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=IXv54dbSELlQPpMrsxF0nNDMm1UFGWks2ByodzV1UsQ=; b=dZUPqCASO8PxiQnsfYAkRUAoe5DBOO3F6lP4la5nTrNgi2VMlCXSvHjwOVlGN+vzMB vA6+8Vgm4iLHvOvf3Hvsf22yqDHTXc2Y9TARrsbLC7dWFP5qYiwqgXRb9t3/wlDmOyXM MlnUfNOyUdMa8pl0LQdzwEvW4+MOmHe4R8GEkDJ7yNf6WcImD/NTTo1UkB/euhYpqcoM drxvFq9cgKoZHiN3ouVJJWi53cZ+Bp8WHo0EwwHh8vnlUol21IGmt/gq2B7TP3ifC3tH M+r5TsLc0ZIJh11AB0ONKUCtaD3HmZFxqRcrEm2TyV+CnjZ2hNqFrQ3qoCRz+dhyPuQe 7V9A==
X-Gm-Message-State AOAM531fcIgRKsHHtvKeeDUVm7QR3oJrbMJxH+LDdlTqRkCalEZpeRm+ 6PI5kZtdKH3NUo2+AsnDEbQhzzaYemjS17R4V9BRBsOwjZRypMlWGAf2yKDeH3osdY0GsTx33Wg +wLAXcCmotjo=
X-Received by 2002:a05:620a:142a:: with SMTP id k10mr19998893qkj.182.1592314230092; Tue, 16 Jun 2020 06:30:30 -0700 (PDT)
X-Google-Smtp-Source ABdhPJxobyF0Mo8VoBYvr4jQx461xLm41lK6rwGSDd9BrkCyNOrXDSbbtCkX5n22HREC1K7pluKdPQ==
X-Received by 2002:a05:620a:142a:: with SMTP id k10mr19998869qkj.182.1592314229764; Tue, 16 Jun 2020 06:30:29 -0700 (PDT)
Autocrypt addr=chet.ramey@case.edu; prefer-encrypt=mutual; keydata= mQGiBEEOsGwRBACFa0A1oa71HSZLWxAx0svXzhOZNQZOzqHmSuGOG92jIpQpr8DpvgRh40Yp AwdcXb8QG1J5yGAKeevNE1zCFaA725vGSdHUyypHouV0xoWwukYO6qlyyX+2BZU+okBUqoWQ koWxiYaCSfzB2Ln7pmdys1fJhcgBKf3VjWCjd2XJTwCgoFJOwyBFJdugjfwjSoRSwDOIMf0D /iQKqlWhIO1LGpMrGX0il0/x4zj0NAcSwAk7LaPZbN4UPjn5pqGEHBlf1+xDDQCkAoZ/VqES GZragl4VqJfxBr29Ag0UDvNbUbXoxQsARdero1M8GiAIRc50hj7HXFoERwenbNDJL86GPLAQ OTGOCa4W2o29nFfFjQrsrrYHzVtyA/9oyKvTeEMJ7NA3VJdWcmn7gOu0FxEmSNhSoV1T4vP2 1Wf7f5niCCRKQLNyUy0wEApQi4tSysdz+AbgAc0b/bHYVzIf2uO2lIEZQNNt+3g2bmXgloWm W5fsm/di50Gm1l1Na63d3RZ00SeFQos6WEwLUHEB0yp6KXluXLLIZitEJLQwQ2hldCBSYW1l eSAoQ2FzZSBzdGFuZGFyZCkgPGNoZXQucmFtZXlAY2FzZS5lZHU+iF8EExECAB8FAkPi19EC GwMHCwkIBwMCAQMVAgMDFgIBAh4BAheAAAoJELtYafBk6nSrelkAn31Gsuib7GcCZHbv5L5t VKYR9LklAJ4hzUHKA49Z0QXR+qCb80osIcmPSbkBDQRBDrBvEAQAkK6TAOKBEM+EC4j6V/7o /riVZqcgU5cid2qG9TXdwNtD9a3kvA/ObZBO93sX59wc6Bnwo4VJxsOmMlpGrAjJsxNwg3QH akEtf8LXRbVpj5xStdmBdQZUhIQyalo/2/TZq5OijtddUQcL5cs70hTv/FpT3wUvr2Xr8rjF 41IFEz8AAwcD/A0CZEGlzIrT5WCBnl6xBog/8vKiUCbarByat3d1mL6DbizvKNXQRTC9E/vE dENAWCQCjr75Bu55xT8n3SXGtWdDC5xmZ/P3OBYORP8yl8H8I1FIosWOFirbIeYdZPq8SPD1 HL+EXo9zSiHVrrZRJ19ooCKKbSdXHFCY+aJG+0KZiEkEGBECAAkFAkEOsG8CGwwACgkQu1hp 8GTqdKvjcACfZlkVCDwaz/NTO9cy3t69oWpVPNwAnRwe0qk/WL/gfhH346xh5B3HFbFN
User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.9.0
In-Reply-To <20200615204717.GB28118@jar>
Content-Language en-US
X-Mirapoint-IP-Reputation reputation=Good-1, source=Queried, refid=tid=0001.0A020303.5EE8C7A1.004F, actions=tag
X-Mirapoint-IP-Reputation reputation=good-1, source=Fixed, refid=n/a, actions=tag
X-Junkmail-Status score=7/80, host=mpv3-2015.case.edu
X-Junkmail-PrAS-Raw score=7/80, refid=2.7.2:2020.6.16.124216:17:7.944, ip=, rules=__YOUTUBE_RCVD, DKIM_SIGNATURE, __X_GOOGLE_DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __TO_MALFORMED_2, __TO_NO_NAME, __MULTIPLE_RCPTS_TO_X2, __HAS_REFERENCES, __REFERENCES, __HAS_FROM, FROM_EDU_TLD, __HAS_MSGID, __SANE_MSGID, DATE_TZ_NA, __USER_AGENT, __MOZILLA_USER_AGENT, __MIME_VERSION, __IN_REP_TO, __CT, __CT_TEXT_PLAIN, __CTE, __REPLYTO_SAMEAS_FROM_ADDY, __REPLYTO_SAMEAS_FROM_ACC, __FROM_DOMAIN_IN_ANY_CC1, __FROM_DOMAIN_IN_ANY_CC2, __REPLYTO_SAMEAS_FROM_DOMAIN, __DKIM_ALIGNS_1, __DKIM_ALIGNS_2, __ANY_URI, __URI_MAILTO, __URI_WITH_PATH, __URI_ENDS_IN_SLASH, __URI_NO_WWW, __CP_URI_IN_BODY, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __MAIL_CHAIN, __FORWARDED_MSG, __BODY_NO_MAILTO, __NO_HTML_TAG_RAW, BODYTEXTP_SIZE_3000_LESS, BODY_SIZE_900_999, __MIME_TEXT_P1, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138
Received-SPF pass client-ip=129.22.103.194; envelope-from=chet.ramey@case.edu; helo=mpv3-2015.case.edu
X-detected-operating-system by eggs.gnu.org: First seen = 2020/06/16 09:30:31
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 <bug-bash.gnu.org>
List-Unsubscribe <https://lists.gnu.org/mailman/options/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=unsubscribe>
List-Archive <https://lists.gnu.org/archive/html/bug-bash>
List-Post <mailto:bug-bash@gnu.org>
List-Help <mailto:bug-bash-request@gnu.org?subject=help>
List-Subscribe <https://lists.gnu.org/mailman/listinfo/bug-bash>, <mailto:bug-bash-request@gnu.org?subject=subscribe>
X-Mailman-Original-Message-ID <bd77214b-2690-f5de-a814-108e5be8b6f1@case.edu>
X-Mailman-Original-References <20200615204717.GB28118@jar>
Xref csiph.com gnu.bash.bug:16384

Show key headers only | View raw


On 6/15/20 4:47 PM, beluro@web.de wrote:

> Bash Version: 5.0
> Patch Level: 3
> Release Status: release
> 
> Description:

> 	`hash -l' is supposed to generate output that is reusable as input
> 	(`help hash' says so, at least). In case the hash table is empty, a
> 	string not re-usable as input is output to stdout. The exit code
> 	indicates success in this case. The string being output is locale-
> 	dependant (and therefore is hard to filter out in a work-around).

It's an interesting question. An empty hash table is not an error
condition, and doesn't result in a non-zero exit status, so output to
stderr is not appropriate. You might want to temporarily enable posix mode,
which suppresses the message.

-- 
``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/

Back to gnu.bash.bug | Previous | Next | Find similar


Thread

Re: hash -l with empty hash table prints to stdout Chet Ramey <chet.ramey@case.edu> - 2020-06-16 09:30 -0400

csiph-web