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: An xtrace variant Date: Thu, 2 Jul 2020 11:34:57 -0400 Organization: ITS, Case Western Reserve University Lines: 19 Approved: bug-bash@gnu.org Message-ID: References: <87wo3pz3qo.fsf@hobgoblin.ariadne.com> 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 1593704107 29647 209.51.188.17 (2 Jul 2020 15:35:07 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu, bug-bash@gnu.org To: "Dale R. Worley" , Robert Elz Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1593704102; bh=+gytpGaSAP3Z37EnOGGv2iYpmo38w4jnLP2UwT4cdyQ=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=0LuQk1tURGGY24I3wBBImV5UklOjW4o4d2OVKx+JioOTXXDVE3Cv/HQWH3VZz52knB kxk3PTrbQ7jd3rsdDJ5gDc7qtZMGwGcoV0mH+HN/ZnFPmB+Au9PlmoBR2XfcGpH9c7E dFBn20VFe4r51QBYpPYxJakmgyWBU8g87xBVTLLjgu60W3RGqZrL6xCLWnl9C6+T3Ba 1zFjMOhGKgM2RZA7lIBNoA95wsLdWH97ZIqzB/wHbZbPR7RBcrLEyIour4cPELi8ROV 30N+uh+WhU+7kamHvgEkIwbI5N9ejuWsP28FxiHPkM+QCNbRyPI9EaIwRXyvumIvn4C jm9zUcrQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1593704100; bh=EsYTevN6hpfrBlow8yi0V2kKw4nOsTh5Y+H6DKke4oU=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=3mTbabBiK3RihNnsv7/FwZnloWzztMLj9+jmEA6gO//aWEFnK1FaVoV6b86aptscvB fKwzgH9BnOyEnfgwefjIJ96SStsWIoY/neYOHvxBaGdq75O6IbZl6RlTODydHwJhZ2N 5vc0Hv7grU35ZuB9OUYL5qjyl4yddAwizFekVJXX3vOQkO3xMk2+fdur1zWbLtWJvgs SYnmXx2pUfWJxY+MOT9p7u8r8hltXuej3Xo3v6XQ//nEI4Qk8q4ljnooHF4fU453lty rn+d42tyGtuj9ade4quktE10ql+IKzk1Rim0Uz4vujOP3PVNXhSHowLZ0czDMWcKpF8 oUIa14LA== 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=EsYTevN6hpfrBlow8yi0V2kKw4nOsTh5Y+H6DKke4oU=; b=MZduptkShZ4+eazfw4KwosSCbuJ34cIyhhorQmyQw2Kc5OEFjPbCp7xElQdzOrvsym W/qt4E4/vLLVBiOTFwiW2xHCQPUk8tXctzOqQ//WmhsAU+mFvHtbpmzWfQn/S7OCf1yJ 6o+N+yTN/6PLXThyTscaBQFVY848W1sHToPItU7mfgPDo2uc3nR+Kc6uPRmgQhYr+XAi koHPrAncCBauFaESE1VxCuKXYabCR0uGFWWnzkQkFeIG8Kl4WqMVIK8rOXdG62EX1lOw 6UzGlsqpdXUGDOIsZiORyxGhoP951Y4K7Xw+AUXe3IT+bKtwDFfACRwo87P+VMGpMtpe CvMQ== 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=EsYTevN6hpfrBlow8yi0V2kKw4nOsTh5Y+H6DKke4oU=; b=A0ZFJpSWbBTr9C6OZ4rMKGBeEXp6CpbS3HyZah3AjLNNNt0/Ve5y7m+Ql3AH7nhfUi IpoRbdqAkfK1gPsTAyqrrFoZGLOCcTEuOB5OtkGzHg/Nck+O6G6JmQZpyN4RLiSYd0rG 73yuHquS40F+y4olqFp91r1YUxuo//xgkzA0A5+hLBdoH0FoT/POZZAVxCO6jKCJLSaJ SakrDjYrud1vguBW//MMvSdO9Fw+pe+7jGJacY/cmGt0xAbBPo6FDDY6JnRk3g0EHMir DDyj9+5yL8yFxN58LzPRyeGUn+U5C+ePuEgb09wMBKDeaC42Ozes1ID5pZYj7xepr2hI aYtw== X-Gm-Message-State: AOAM531Zxaou0Vcm8klVjv3rXnJq+UvQkZY8Ik/K3gcbtOTRowPSrZ3B ykJLqWD7OuqSlBRYQYt4ZRexZBDy6VmAY8w4ojb+GDsyTPr8+MR+4MVvQytsNHsBWOvFwdTgwhd puM3ITmdITf0= X-Received: by 2002:a37:b6c5:: with SMTP id g188mr7805610qkf.1.1593704099372; Thu, 02 Jul 2020 08:34:59 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxaRjEUswOzmuV6ihFUCSfOir2AG00zINIcJuVjakD6ZtOA4sBC4pLISa5XAA9D7EX4SjgrmQ== X-Received: by 2002:a37:b6c5:: with SMTP id g188mr7805588qkf.1.1593704099110; Thu, 02 Jul 2020 08:34:59 -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 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 In-Reply-To: <87wo3pz3qo.fsf@hobgoblin.ariadne.com> Content-Language: en-US X-Mirapoint-IP-Reputation: reputation=Good-1, source=Queried, refid=tid=0001.0A020302.5EFDFE70.0013, 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=2.7.2:2020.7.2.143917:17:8.317, 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, __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, BODY_SIZE_700_799, [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 = 2020/07/02 11:35:00 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: X-Mailman-Original-References: <87wo3pz3qo.fsf@hobgoblin.ariadne.com> Xref: csiph.com gnu.bash.bug:16526 On 6/29/20 10:28 PM, Dale R. Worley wrote: > Robert Elz writes: >> The NetBSD sh (this time alone I believe) also has a -X (not that part, I >> think one or two other shells also have unrelated -X options) which acts >> just like -X, except it locks the output to stderr as it is at the time >> the -X option is enabled (until -X is unset). [...] > > I can see significant benefits to that. At times, I've been thwarted in > tracing things by redirection of stderr. exec {BASH_XTRACEFD}>/tmp/trace-file set -x -- ``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/