Path: csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: Regular Expression matching operation =~ Date: Mon, 23 Sep 2019 09:21:44 -0400 Lines: 13 Approved: bug-bash@gnu.org Message-ID: References: <932d9cd1-fcfc-c085-a909-291c4013a9ed@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 1569244925 25140 209.51.188.17 (23 Sep 2019 13:22:05 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: 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=1569244919; bh=/CwQk0RaxoOw4+z/0+ff5hnqy5ULDVk2RF1IEP2Kc3A=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=9ME7Yy/AN4xvPgp6lCQGsbay14EKzfIZtP5tihB7caZpYxsZxGAbF+DWAwvxwHGg2/ jBB3cvFpATQ6F2RrXLKVm+QtyZTEOCUINv8zKP9hRkwOrD2puEbRbdeV9etzulUp82B IiBLh7uBgg9LMlrDpSXhcaV4HQQvafxMPWCACP0niK+uINanupHg/s3AA9BPmwZHTRp WS/gMLlPppcGcMYtkuC+vuqBaYlv8pvGeoZ3peZWlhCA74gMHdUKqNlGWG+3a6rx71k vK416Qmjma4Ibs2ZxH4VKCq6l8UqrkmX4opXNeIzBNBUlDs0kWA5K7Hox3aQQ9CiLmw LONzFxRQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1569244918; bh=Pxogdzn0fJCZuuV2gJSGSinQi8VXkQdsWlw1oYHk98Q=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=qm7ULjgRaXQNep5c/IeecPSFEmtV3rKjsPix1klA6yZyMod8OGL64CCmrWYq0iwL+5 lYBHnPLFEIT4gKVFtvihe38HhQCqX7C0HtImKH67hTWpoZzMblYZAjs0q8VDAN2BxOM 13wCxo8siKw/is2dyeg7UZlbID1KR51dthz8EVw3h2JyBo+JK09b1jHqVQgEAin7A6z QBOzVY4GtbklCao2zGK8nOjVKZGXoSMN6Ilh2tWo0MDGso85fYVXniBTMqJV0Dhesqt Jw/C7t69VNK+ywtwcbhvF8Ix+91aQidRhdk+ZeJHq3r6+5PuEIwWaRFoGG68+vs8uR2 m1Dr+49Q== Openpgp: preference=signencrypt 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/di50Gm1l1Na63d3RZ00SeFQos6WEwLUHEB0yp6KXluXLLIZitEJM0gQ2hldCBSYW1l eSA8Y2hldC5yYW1leUBjYXNlLmVkdT7CYQQTEQIAIQIbAwYLCQgHAwIDFQIDAxYCAQIeAQIX gAUCRX3FIgIZAQAKCRC7WGnwZOp0q069AKCNDRn+zzN/AHbaynls/Lvq1kH/RQCgkLvF8bDs maUHSxSIPqzlGuKWDxbOwE0EQQ6wbxAEAJCukwDigRDPhAuI+lf+6P64lWanIFOXIndqhvU1 3cDbQ/Wt5LwPzm2QTvd7F+fcHOgZ8KOFScbDpjJaRqwIybMTcIN0B2pBLX/C10W1aY+cUrXZ gXUGVISEMmpaP9v02auToo7XXVEHC+XLO9IU7/xaU98FL69l6/K4xeNSBRM/AAMHA/wNAmRB pcyK0+VggZ5esQaIP/LyolAm2qwcmrd3dZi+g24s7yjV0EUwvRP7xHRDQFgkAo6++QbuecU/ J90lxrVnQwucZmfz9zgWDkT/MpfB/CNRSKLFjhYq2yHmHWT6vEjw9Ry/hF6Pc0oh1a62USdf aKAiim0nVxxQmPmiRvtCmcJJBBgRAgAJBQJBDrBvAhsMAAoJELtYafBk6nSr43AAn2ZZFQg8 Gs/zUzvXMt7evaFqVTzcAJ0cHtKpP1i/4H4R9+OsYeQdxxWxTQ== User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 In-Reply-To: Content-Language: en-US X-Junkmail-Status: score=7/90, host=mpv1-2015.case.edu X-Junkmail-PrAS-Raw: score=7/90, refid=2.7.2:2019.9.23.123617:17:7.944, ip=, rules=DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __TO_MALFORMED_2, __TO_NO_NAME, __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_WITH_PATH, __URI_NO_WWW, __CP_URI_IN_BODY, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __BODY_NO_MAILTO, __NO_HTML_TAG_RAW, BODYTEXTP_SIZE_3000_LESS, BODY_SIZE_500_599, __MIME_TEXT_P1, __MIME_TEXT_ONLY, __URI_NS, HTML_00_01, HTML_00_10, DKIM_ALIGNS, BODY_SIZE_5000_LESS, IN_REP_TO, MSG_THREAD, __FROM_DOMAIN_IN_RCPT, [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] X-Received-From: 129.22.103.226 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: <932d9cd1-fcfc-c085-a909-291c4013a9ed@case.edu> X-Mailman-Original-References: Xref: csiph.com gnu.bash.bug:15409 On 9/22/19 5:44 PM, Allodoxaphobia wrote: > In moving a bash ver. 4.3.48 (Ubuntu) program to a bash ver. 5.0.11 > (FreeBSD) environment I encountered either a bug, a quirk, or > an undocumented feature. It's not exactly undocumented, more undefined. You can't count on the NUL character or the empty string doing anything in particular. -- ``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/