Path: csiph.com!goblin3!goblin.stu.neva.ru!panix!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: test -v for array does not work as documented Date: Sun, 23 Feb 2020 11:27:21 -0500 Organization: ITS, Case Western Reserve University Lines: 27 Approved: bug-bash@gnu.org Message-ID: References: <25b3fccb-151b-0712-76f1-5b19ffcce1d9@passchier.net> <9a084bb5-2362-b140-f3e8-9e18a0f1cac6@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 1582474983 2862 209.51.188.17 (23 Feb 2020 16:23:03 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: pepa65 , 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=1582474978; bh=Smfgg1JFXiTkBJPpM6CFzjlM8JdKlyWIYgcs7bafo4Y=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=rU370zdLk2X9E8nWnpmP7wuJ/KqdKxotCz0/20YXGn3qYm1T0g2wI4l1qGkfb9LFBm G7SfMlJUVLuWswrmPuf64eYsOIkrBSOouNNNbLDW3UgCxdpD96Z7yESfz6j6dmBICKi zv6+7m0rYTTJaSi+HluJl1nM38jNUUlFlwLQlwambU5EsbVlpeb60BJiltMWHC/Tg8v ui/BvW/kNjiDGElqO+702KctTkuDgF7zS2zSwNh80rrnDAyLXIyGclOZHK5UlbWOZzc 2+PluA29E7NB8s8QSAiqoG3A2xBtW4Jj9NYJKTeg7zcs3/dHYO/gBktQKX+DyfjwjTV cyznBUIA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1582474977; bh=bNVMFf3J8lq3sPR4BzCWnVf69pUnIfM9nz13vWFlU2Q=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=CfDkHPTfuWWVbH/dpu/UzoWu9837X9b+zV2xN/4soymzb5K9N2B75GGLX29TP28jCk pShJh6Qm278q3d+5XCR0yTjWztXFKPOf+wQ2bsd2TdrA9F4EgqXFr1IPo5IxbFl4mlk JyUVN+frQrIHnvfq2qDgt2TT/W71ygslrbIqs0MLUov1q4SeSdew6tWblBTM3q7JHNB uuB7QThiSynMmClXY124d/7ISEgLgnyhIWzflcLolfVCw1hRRWT2NMGtncYTHRXqabn zaepjKYw/dMyC+lKZu5ztwsiFBRvxmZvlirAsjQsSejHz44My6xIxr63iq+cIFmtP1b mRNW/ddg== 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=bNVMFf3J8lq3sPR4BzCWnVf69pUnIfM9nz13vWFlU2Q=; b=FWU7L4tB2rDRipLnQeMbWwhlXXwVchVNv4mKjR5cq3dMDL7wJYMe+QHhiI8Czm+R1u rzh6N8ZVtO4vEoEfe/PsRf7wIZGCZOpmvzYN2o1xE+8IBOnjRKTpmY1KjAuoakLScFbh IaRKIbWP3RPa6uI/9wyEm2KkaNVzxjRwvAMuQX4IxyCNvTu8c3dPuPGRj4N+45ZEIWno hedWgSw8eFnlPgpSGcPcrgkJm/bQQp1xD1FVNodnL5AFXxVRRKi8q1RJ85lImWIK15s+ 6s6WRB4TEg9ToVOzECH96bemUxze1sbiDGRRX/nbzMj6sfTXhrMa5wC/kHuUIBOnf7PL hV8w== 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=bNVMFf3J8lq3sPR4BzCWnVf69pUnIfM9nz13vWFlU2Q=; b=KvMhz2LyKIx+e297pIQUgazsjCkdgMJvkQDYVP26+Qehi5an8tbhK+GLumKkrC4tYB lsshYyJCD4rwqlA1Cc0gHiRd/8u/x4AnuMjPy1yJKvx/jvD9hDt4yhRaK32+mv09xtsY /iHLaBOtRhZE8DC/UAIEx/P2/Cdgq+w2hncA8RfbCmtIYJXawyaO2b+M0Ky6YVI9QLFc TCXSw9IK75PekEphwBYzwjquNz6BPfI48TX9i6iB1VyzNCShVricu2rBcyskFLnIE1a1 0fMu5RlI8o1Q/nZea33AIwGzrRxg7CaiQEU5WcC4RrCdtUiEO2+5fmEIl8fI+Q2Y6/SL WIiQ== X-Gm-Message-State: APjAAAUrq62ygqkx2VC1T14KpEZVKrdRyNiaDp3PEyQQIM4s1/XBCYUm lmCjRVizNs3vPkxLEvCIMJJ4zGuhvV8SKR4UI/lf6TAwYMuyidclbCA+eEiUiukOKw0p2oZMwCW +OzV8P7gZgNQ= X-Received: by 2002:a25:d6d1:: with SMTP id n200mr40495481ybg.488.1582474658127; Sun, 23 Feb 2020 08:17:38 -0800 (PST) X-Google-Smtp-Source: APXvYqzLJ1i38oOcAhU6Vr4SnZkL651Wk3deHGmAlRaBGDWRV8fo/6ZoJgj+h6qNhAa5fN/nBJFFCg== X-Received: by 2002:a25:d6d1:: with SMTP id n200mr40495461ybg.488.1582474657860; Sun, 23 Feb 2020 08:17:37 -0800 (PST) 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/68.4.1 In-Reply-To: <25b3fccb-151b-0712-76f1-5b19ffcce1d9@passchier.net> Content-Language: en-US X-Junkmail-Status: score=7/80, host=mpv4-2015.case.edu X-Junkmail-PrAS-Raw: score=7/80, refid=2.7.2:2020.2.23.152419:17:7.944, 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, __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_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, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 129.22.103.195 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: <9a084bb5-2362-b140-f3e8-9e18a0f1cac6@case.edu> X-Mailman-Original-References: <25b3fccb-151b-0712-76f1-5b19ffcce1d9@passchier.net> Xref: csiph.com gnu.bash.bug:15951 On 2/21/20 3:31 AM, pepa65 wrote: > On 21/02/2020 02.37, Chet Ramey wrote: >> It's unset because it doesn't have a value, but it retains the `local' >> attribute so it stays local if subsequently assigned one. > > Is there any reason the local attribute cannot be unset? If it would be > possible then the "declare/typeset -p" would return 1 when the variable > doesn't exist. There have been several umm...passionate discussions about this. The idea is that a local variable that's unset should stay local (and unset) until the function returns instead of `uncovering' a variable at a previous scope. Think about dynamic scoping and its effects on variable visibility. > By the way, it seems that `local -p var` doesn't work like 'declare -p > var` even though `help local` suggests it should. How so? Do you mean that declare -p var in a function will show different variables? -- ``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/