Path: csiph.com!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: Bash removes unrequested characters in bracket expressions (not a range). Date: Wed, 28 Nov 2018 08:59:03 -0800 Lines: 33 Approved: bug-bash@gnu.org Message-ID: References: <1c24a279-f439-a13c-be60-901096ccd4e1@case.edu> <63b8941d-16bc-0761-7272-83eb7347354e@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 1543846810 31676 208.118.235.17 (3 Dec 2018 14:20:10 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: Bize Ma Envelope-to: bug-bash@gnu.org Resent-Date: Mon, 3 Dec 2018 09:20:00 -0500 In-Reply-To: Resent-From: Chet Ramey Resent-To: bug-bash@gnu.org, bash@packages.debian.org X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:delivered-to :reply-to:cc:subject:to:references:from:openpgp:autocrypt :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=5O+xDt/EcU2DUve6seFesOg7FJOgI5+jeR7pzOo/o1A=; b=r4XGm17D1VdAZCskvXA2/LTcfQpDrGi4ALlkJwwjriDTnrMrHtNtsPgw+/WwvtZgwT O5srHf6faFPAXfoN0IpVvDXlZaC5xg9bDJMy0bReoCuK1y2wcqwkCk6iyUatkjVwtyuI 0ELuFbvNAD9UDelcvE8NFLEy03V/rKFYz7S9DU+lEguYztfniKcG6bnIDp2h0eAwUZHz zv68eDt8DRRnGzEqh0zrgPCMVLMimWAYgm5BbsVjHoWrU4R9bIFGDX9j9+g5mSnwj6ty uAzn+a1wU4jDKZQa5cW2xnaPl0w2BvjcUtgFGKS/aqMEYsIcW4KVtsDZ2HcxwLZBG4/e lVRg== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of chet.ramey@case.edu designates 209.85.219.199 as permitted sender) smtp.mailfrom=chet.ramey@case.edu X-Gm-Message-State: AA+aEWYgNndl8OJ/ziIxAUPOu8hOryjPGrD2bgzbARuE5+zj5KDOPw4i cPyU6rv4/bBXT4A95qcdbduU2KzWTVXqHlZlVq1wIl8eFwf4YZBRNggd/ZycjCg1vM2J6EPXqsO JsRqb7nnX55DhbanBVw8+lFO9cVhkOZ/sqLbJ1OpJgvgBTmsUtYdb9g== X-Received: X-Received X-Received: by 2002:adf:eb45:: with SMTP id u5mr23513334wrn.102.1543424348711; Wed, 28 Nov 2018 08:59:08 -0800 (PST) X-Forwarded-To: chet@chet-mail.tis.cwru.edu X-Forwarded-For: cpr@case.edu chet@chet-mail.tis.cwru.edu X-Delivered-To: cpr@cwru.edu X-Google-Smtp-Source: AFSGD/WKQPNb2xDzsw6fUdEbwBllF9VhOvu41XKuEJqONQ/6X8Ki/bA2iA+dvPa0U0HGUimASGlu X-ARC-Seal: i=1; a=rsa-sha256; t=1543424347; cv=none; d=google.com; s=arc-20160816; b=KAXXtEQU9WyfNkUMl0wNGA+ylYXWRwnhT+svy4I41f1COPO17eJ5SscFm3LDuULtvB GsvdwWzCBQX03AuB5uHYPRLgarp9VCFwr6ZmcWyCQYEpI6ob5pL9qAE8Os85jM5cjAr4 rZbOHQq9tJfHqESWssVI60xRdmAK6tHDvqAU/egeVIS8pD5YNHTmovBJ0BWYSHorTvcZ c17osh4DDOu+iOHidyQ4cL8dVwzSfIaTN4Qj7Nu9er4+5O8Py+vPKqTNlF/igbHhDXmZ 7dzC0nXOqHPZA7VJiZjmrWuVb5hDyMN32Y6dwsmtEw/IG4o7f9tq0kbHFhgfR7Mfqrme tO9Q== X-ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:organization:autocrypt:openpgp:from :references:to:subject:cc:reply-to; bh=5O+xDt/EcU2DUve6seFesOg7FJOgI5+jeR7pzOo/o1A=; b=Ks88frIN+gSWIuN3T1eWeWL9mhkC/422qen8bNK+IIrb7QbYwSJk70oFn6lD0eQEf9 h4QNIKBLyJWPHz+GE0hJbQvHJVKs3BfvfPhGo2+DKGTaqqAxgNn8KiCVidHwikXSfPlp ZBPZ8QGywTMcUbEpXXC+I/TXVRC6RgJA1i0sAoq7h5F3dZCkw48HSwMmSvFrDRECQQuU T0RYO1fIq7aNa3xj8aOvvXc9mNhZIwc0/hQWOnZJCl9rZVf2CWM+T1hUcHR/xOdfb4UZ Hat24mkL/h/2Dh1F8RA/GxGHaKLijNPcJ7jxGH6ydBPfKAuTyMEgjWw7ITeu3Unmo6mE c1GA== X-ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of chet.ramey@case.edu designates 209.85.219.199 as permitted sender) smtp.mailfrom=chet.ramey@case.edu X-Received-SPF: pass (google.com: domain of chet.ramey@case.edu designates 209.85.219.199 as permitted sender) client-ip=209.85.219.199; X-Authentication-Results: mx.google.com; spf=pass (google.com: domain of chet.ramey@case.edu designates 209.85.219.199 as permitted sender) smtp.mailfrom=chet.ramey@case.edu X-Openpgp: preference=signencrypt X-Autocrypt: addr=chet.ramey@case.edu; prefer-encrypt=mutual; keydata= xsDiBEEOsGwRBACFa0A1oa71HSZLWxAx0svXzhOZNQZOzqHmSuGOG92jIpQpr8DpvgRh40Yp AwdcXb8QG1J5yGAKeevNE1zCFaA725vGSdHUyypHouV0xoWwukYO6qlyyX+2BZU+okBUqoWQ koWxiYaCSfzB2Ln7pmdys1fJhcgBKf3VjWCjd2XJTwCgoFJOwyBFJdugjfwjSoRSwDOIMf0D /iQKqlWhIO1LGpMrGX0il0/x4zj0NAcSwAk7LaPZbN4UPjn5pqGEHBlf1+xDDQCkAoZ/VqES GZragl4VqJfxBr29Ag0UDvNbUbXoxQsARdero1M8GiAIRc50hj7HXFoERwenbNDJL86GPLAQ OTGOCa4W2o29nFfFjQrsrrYHzVtyA/9oyKvTeEMJ7NA3VJdWcmn7gOu0FxEmSNhSoV1T4vP2 1Wf7f5niCCRKQLNyUy0wEApQi4tSysdz+AbgAc0b/bHYVzIf2uO2lIEZQNNt+3g2bmXgloWm W5fsm/di50Gm1l1Na63d3RZ00SeFQos6WEwLUHEB0yp6KXluXLLIZitEJM0aQ2hldCBSYW1l eSA8Y2hldEBjd3J1LmVkdT7CYQQTEQIAIQIbAwYLCQgHAwIDFQIDAxYCAQIeAQIXgAUCQ+La kQIZAQAKCRC7WGnwZOp0q9rGAJ4sRGLmlF8klZTH75z7jyQScpU6aACeNMahjWIhumt4u96d 9mdMJqlabVnOwE0EQQ6wbxAEAJCukwDigRDPhAuI+lf+6P64lWanIFOXIndqhvU13cDbQ/Wt 5LwPzm2QTvd7F+fcHOgZ8KOFScbDpjJaRqwIybMTcIN0B2pBLX/C10W1aY+cUrXZgXUGVISE MmpaP9v02auToo7XXVEHC+XLO9IU7/xaU98FL69l6/K4xeNSBRM/AAMHA/wNAmRBpcyK0+Vg gZ5esQaIP/LyolAm2qwcmrd3dZi+g24s7yjV0EUwvRP7xHRDQFgkAo6++QbuecU/J90lxrVn QwucZmfz9zgWDkT/MpfB/CNRSKLFjhYq2yHmHWT6vEjw9Ry/hF6Pc0oh1a62USdfaKAiim0n VxxQmPmiRvtCmcJJBBgRAgAJBQJBDrBvAhsMAAoJELtYafBk6nSr43AAn2ZZFQg8Gs/zUzvX Mt7evaFqVTzcAJ0cHtKpP1i/4H4R9+OsYeQdxxWxTQ== X-Organization: ITS, Case Western Reserve University X-User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 X-Content-Language: en-US Resent-Message-Id: <20181203142000.353E932D7788@caleb.ins.cwru.edu> X-Junkmail-Status: score=7/90, host=mpv1-2015.case.edu X-Junkmail-PrAS-Raw: score=7/90, refid=2.7.2:2018.12.3.132716:17:7.944, ip=, rules=DATE_TZ_NA, __HAS_FROM, FROM_EDU_TLD, __TO_MALFORMED_2, __TO_NAME, __TO_NAME_DIFF_FROM_ACC, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __HAS_CC_HDR, __HAS_REPLYTO, __REFERENCES, __IN_REP_TO, __X_RESENT_FROM, __HAS_MSGID, __SANE_MSGID, __MIME_VERSION, __CT, __CT_TEXT_PLAIN, __CTE, __X_GOOGLE_DKIM_SIGNATURE, __X_FORWARDED_TO, __REPLYTO_SAMEAS_FROM_ADDY, __REPLYTO_SAMEAS_FROM_ACC, __FROM_DOMAIN_IN_ANY_CC1, __REPLYTO_SAMEAS_FROM_DOMAIN, __ANY_URI, __URI_WITH_PATH, __URI_NO_WWW, __HIGHBITS, __CP_URI_IN_BODY, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __FORWARDED_MSG, __NO_HTML_TAG_RAW, BODYTEXTP_SIZE_3000_LESS, BODY_SIZE_1200_1299, __MIME_TEXT_P1, __MIME_TEXT_ONLY, __URI_NS, HTML_00_01, HTML_00_10, BODY_SIZE_5000_LESS, IN_REP_TO, MSG_THREAD, __FROM_DOMAIN_IN_RCPT, __TO_REAL_NAMES, MULTIPLE_REAL_RCPTS, LEGITIMATE_SIGNS, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138 X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.5C053B91.0003,ss=1,re=0.000,fgs=0, ip=0.0.0.0, so=2016-11-06 16:00:04, dmn=2011-05-27 18:58:46 X-Mirapoint-Loop-Id: 68778998040c5103e4469ce6aa56ab42 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 129.22.103.226 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:14879 On 11/28/18 2:29 AM, Bize Ma wrote: > Chet Ramey (>) wrote: > > On 11/24/18 4:32 PM, Bize Ma wrote: > >  [...] > > > I have been made aware that there is a > >       cstart = cend = FOLD (cstart); > > inside the `sm_loop.c` file that will convert into a range many > > individual character. If that understanding is correct that is the > > source of the difference with other shells. > > I'm not sure what you mean by "convert into a range." If cstart and cend > were treated as a range, the start end and end characters would be the > same. If cstart == cend, a character that collates >= cstart and <= cend > would have to collate equal to cstart and cend. > > > Yes, exactly, a range where the start and the end are the same. A range like that is exactly equivalent to a single ordinary character. POSIX: "An ordinary character in the list should only match that character, but may match any single character that collates equally with that character" -- ``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/