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


Groups > gnu.bash.bug > #16541

Re: Return from function depending on number of parameters

Path csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail
From Chet Ramey <chet.ramey@case.edu>
Newsgroups gnu.bash.bug
Subject Re: Return from function depending on number of parameters
Date Sun, 5 Jul 2020 13:24:41 -0400
Organization ITS, Case Western Reserve University
Lines 22
Approved bug-bash@gnu.org
Message-ID <mailman.1023.1593969892.2574.bug-bash@gnu.org> (permalink)
References <b1c19d38-64c0-f1ae-d08a-1ada435a0022@gmail.com> <506AA493-0D79-4A9A-A53E-279FDA72CED5@larryv.me> <0b8f32e5-0644-526e-59a4-1bad5a474262@passchier.net> <ACF6AB75-5321-42EC-805E-D84048F539C9@larryv.me> <d4a5db68-0594-e540-c931-593469e73ce2@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 8bit
X-Trace usenet.stanford.edu 1593969893 20580 209.51.188.17 (5 Jul 2020 17:24:53 GMT)
X-Complaints-To action@cs.stanford.edu
Cc chet.ramey@case.edu, bug-bash@gnu.org
To Lawrence Velázquez <vq@larryv.me>, pepa65 <pepa65@passchier.net>
Envelope-to bug-bash@gnu.org
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1593969887; bh=c8X1b9lM4FOqTxMrIlyD1iX2bHzuDYI6HaD2T7IOvkk=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=pOxgyc4YaDyr1oAk4eCKq3t9ryytTfu8D2H8nF80Xmq5wIhrroiz5xu68q4NkOCTcO x2kBjfICKwd7hk7+OnbAfiF31wGF+Jb4qqysoQh767vw2wat73Xy0NbWs4kt5WLUeMX BYD8Gg013eSNN0nB8DE1gXTXzwNsUVspWKai8lI7QKVwdF+UF5z4Teauil7QyYISNeh TQMuuiyhlgNZ0ePvwyhdrP7CrxU+QxAoqu649CApwd3aA5aTlG34Z8S7+ubruEV7qds U5qhh6peUzoBAuMv0xRAEAbD9EXJtkt+RdEdkRiWvD0HG1KUfJo/jle2ngv+bAxUi35 X65IoIRw==
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1593969884; bh=GvpMab3LHJsaMsVMQCq2xFQpd0w1H9P29l/fBracJ6E=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=JCCl+EDfG4kSY6AEsOsNA+bAIk8+YQ4Qqcw3Bq3w7OWopvXbds2Vt2mYyAHKWRnIcJ 3GgnFuSAp38QwW9TYLMI91kuYGL7DBehC5RcWrlS7SAgFXgxbFOIxn6cJsW/c2p0DzS AZypEakX353v1q9cJAuReLWuQNPXA3H7oXZEl78VF0MGC+M4XUPD23IwWecccrEPUjZ bCOHHtcxrn4U0SpMTgRttBvEeOq4iYjw1Y9ljAl8KNks93lxU8aZeRfepryLGY6erUR WN/Bz8VlFV6GIYYmAYM9cC1bZ6GxWnOIXO64sUhnud/65DloyPr2EALRrBX1zoqg2F2 /6y9Gwjg==
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=GvpMab3LHJsaMsVMQCq2xFQpd0w1H9P29l/fBracJ6E=; b=GdeQSbp2yohyFQcN6SPNQ1YZQsUmgEJFMat+kFWOnJ05LcYODveM/Jbcpuczl8ccTN rhwfwXXLvSey2VCVFxvuSiKDNwe4ORpP9rgRMwr/6T4oFiik0Nge6I0x3gIeBmadT7Gj Dmg1MeO62jmbOppD1YYA1+vlNCFKRFGHZGDiFgyWgtVAAJSgFM1ZO6LnTITjmSkWr3vA 3+XG03mOULtT6Q6w0Nw4wGYG0b3kybjF5ALdeA7KoYXDe0+RuTdHploM4YpnLKp8FFbr TIQGiOA2xcbobHXV8P0bMfAnsYpmDCL2Do5RYMkmNGe9T1wcd3KiIe85S0+25lGyFx46 U+bw==
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=GvpMab3LHJsaMsVMQCq2xFQpd0w1H9P29l/fBracJ6E=; b=N/WUmt/XMplSbLdczfEJ7CBXaGYlVMp9+9Szj41bjqS+u4loNFkWmuTgoabPiIXvSA ykgcIQFM+XilFfW0vhy7FtQn3fxyzx5TwVT7lXlPEHQSt3W74VPWZ9Xw47ljMLvE+G1N TkFIe5S2y59ptE0yeaWVICQl+T0M9LTfVqDIt0TRFfw3lv6C+DPz4U9FkkxdHuFC+2PL n0xTKW0j25hPXRJGQiLGBbPjVx3yNC1I2sBQmmJbGQIlNjdeaoPsHT0cVIbWQHJ7Ip1+ JFrtSghNsf+67E+GOv6Aea+v9odksqmBbqTAG2uLWaQcdVE6xjBoqXIzM2lUWYSxkier I4Bg==
X-Gm-Message-State AOAM5312r1ILpYli6dbcNrE+Ip94mfNvbXxZGgLv0EzgCJpp7LKdbklQ EwLjl2FB7uGeMBkHf8Q/XYsuLuxN044Ew8/i6fg3Ah/psHwjmXX7H1O9zWVTzd04jJ50mZOFtmm KtuPMqNpXWKw=
X-Received by 2002:aed:3eee:: with SMTP id o43mr45735610qtf.54.1593969883982; Sun, 05 Jul 2020 10:24:43 -0700 (PDT)
X-Google-Smtp-Source ABdhPJwMhovGMvwBbIulyuVO9i8FQyUlI1pMIyZnbZgtLpKBy1iK5iXxGWt5mP9S7KP6FnuFkVuoDg==
X-Received by 2002:aed:3eee:: with SMTP id o43mr45735583qtf.54.1593969883695; Sun, 05 Jul 2020 10:24:43 -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 <ACF6AB75-5321-42EC-805E-D84048F539C9@larryv.me>
Content-Language en-US
X-Mirapoint-IP-Reputation reputation=Good-1, source=Queried, refid=tid=0001.0A020301.5F0204D0.0078, actions=tag
X-Mirapoint-IP-Reputation reputation=good-1, source=Fixed, refid=n/a, actions=tag
X-Junkmail-Status score=8/80, host=mpv3-2015.case.edu
X-Junkmail-PrAS-Raw score=8/80, refid=2.7.2:2020.7.5.165417:17:8.317, ip=, rules=__YOUTUBE_RCVD, DKIM_SIGNATURE, __X_GOOGLE_DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __MULTIPLE_RCPTS_CC_X2, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __TO_MALFORMED_2, __MULTIPLE_RCPTS_TO_X2, __TO_NAME, __TO_NAME_DIFF_FROM_ACC, __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_CC2, __REPLYTO_SAMEAS_FROM_DOMAIN, __DKIM_ALIGNS_1, __DKIM_ALIGNS_2, __URI_HAS_HYPHEN_USC, __ANY_URI, __URI_MAILTO, __HTTPS_URI, __URI_WITH_PATH, __URI_ENDS_IN_SLASH, __URI_NO_WWW, __CP_URI_IN_BODY, __FRAUD_MONEY_CURRENCY_DOLLAR, __SUBJ_ALPHA_NEGATE, __MULTIPLE_URI_TEXT, __URI_IN_BODY, __URI_NOT_IMG, __MAIL_CHAIN, [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 = 2020/07/05 13:24:45
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 <d4a5db68-0594-e540-c931-593469e73ce2@case.edu>
X-Mailman-Original-References <b1c19d38-64c0-f1ae-d08a-1ada435a0022@gmail.com> <506AA493-0D79-4A9A-A53E-279FDA72CED5@larryv.me> <0b8f32e5-0644-526e-59a4-1bad5a474262@passchier.net> <ACF6AB75-5321-42EC-805E-D84048F539C9@larryv.me>
Xref csiph.com gnu.bash.bug:16541

Show key headers only | View raw


On 7/4/20 12:23 PM, Lawrence Velázquez wrote:

> Quoting Chet liberally from
> https://lists.gnu.org/archive/html/bug-bash/2012-04/msg00034.html:

>>
>> It dates from Posix circa 1990 (1003.2d9, of which I've lost my paper
>> copy).  I implemented it after the Berkeley guys, mostly Marc
>> Teitelbaum, put it into Posix.  It ended up getting dropped in favor
>> of the ksh $((...)) expansion, at which point everyone deprecated the
>> old $[...].  I removed it from the manual sometime later, but it still
>> works as it always has.

This all remains true. I probably won't remove it, but nobody should use it
in new code.


-- 
``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: Return from function depending on number of parameters Chet Ramey <chet.ramey@case.edu> - 2020-07-05 13:24 -0400

csiph-web