From unknown Tue Jun 17 22:23:32 2025 X-Loop: help-debbugs@gnu.org Subject: bug#63813: sed bug Resent-From: yu cuilu Original-Sender: "Debbugs-submit" Resent-CC: bug-sed@gnu.org Resent-Date: Wed, 31 May 2023 13:25:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 63813 X-GNU-PR-Package: sed X-GNU-PR-Keywords: To: 63813@debbugs.gnu.org X-Debbugs-Original-To: bug-sed@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.16855394501397 (code B ref -1); Wed, 31 May 2023 13:25:03 +0000 Received: (at submit) by debbugs.gnu.org; 31 May 2023 13:24:10 +0000 Received: from localhost ([127.0.0.1]:35124 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4Lo9-0000MO-Gu for submit@debbugs.gnu.org; Wed, 31 May 2023 09:24:10 -0400 Received: from lists.gnu.org ([209.51.188.17]:35462) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4Fmr-0004aB-Jl for submit@debbugs.gnu.org; Wed, 31 May 2023 02:58:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q4Fmr-0007PT-A7 for bug-sed@gnu.org; Wed, 31 May 2023 02:58:25 -0400 Received: from mail-qv1-xf30.google.com ([2607:f8b0:4864:20::f30]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1q4Fmp-0007sP-P1 for bug-sed@gnu.org; Wed, 31 May 2023 02:58:24 -0400 Received: by mail-qv1-xf30.google.com with SMTP id 6a1803df08f44-6260a07bf3cso25765476d6.0 for ; Tue, 30 May 2023 23:58:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685516302; x=1688108302; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=rX6FERtRZ3wupyO3U+tp4S+AIgMyez8sveH19E3rZvQ=; b=GID+yr+IJGIuUJpxkDKTdyya4RlCc1QEXeNkctzWcQ7d8U+MQ9EACZ+zNAno9+2AU4 ztyTgUeOWciaXDkrbH3qDJLV623JlI7lAnlrEnyeI9De3tieW8/GRcKZMnUwppXeaD6o MG2i3f/wFSRNRkDL+ipknMzokeJkaWmXRiGqqRZeXB8XWk7VPVZTnypPBFtln5HGaA53 7b0Ji0w5c1ihwdSxH5FvMcAkZ1mgvPysdQYpq5ubhdfXtT8CCuzBY/v2XkDKSslaxa96 CG05C5lxMcZPQSN1aPInRgr86gynAN++qb23Q4dc5Lnewrhm9D8Ia3frbJse3yVLXhVV PeuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685516302; x=1688108302; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=rX6FERtRZ3wupyO3U+tp4S+AIgMyez8sveH19E3rZvQ=; b=cowyXFmAajgEBXI4wPVMRoV5nADBygVwIEB9xFnm442VMX+6OMxNU37KZmnBgjcxp2 yQFrtkBGHnl3DQYa4/4LjuZTvbchbGv4FwHioSfcAfjSpYs0cKI3f7GYkmd5Aj7suYGy DSDCyHWwEFVCbCDWjhEbRKQE7SL2e+1fV/JsLYwpmW94RAniC+usGPLZ8+VM9wAJJ+bc ep0YYNFDV1IrQcpGf7puHYxwmU6gsU/OgdtYgBq+5lKOih88ZDfl/3NubMB0UpyHZFHb XOtBImwTCHi7V8vW7k6go7VqGM7wZGZdXHLjHZcnLiheDopvkooYPtSBvwo0Wa9WBld+ dN6A== X-Gm-Message-State: AC+VfDwO9KtBREq8aTKaoCvMUvj04GmDPBlLL5MzEb4oUiiWWN3lThkO 2IHpIsryigNLg11n0y95tdHUVlBHzdTw7ttqzgQ3foS0Xrk= X-Google-Smtp-Source: ACHHUZ43X6GAYQbMEhTi7Z3hEZrgHJkHFoL+/aq7gtGM52lbGqP0EaMVjf76yyfHiAdzmiKZC5FAH1QiGpAQITgcEiA= X-Received: by 2002:a05:6214:21ac:b0:623:9cab:3e18 with SMTP id t12-20020a05621421ac00b006239cab3e18mr4748729qvc.26.1685516302472; Tue, 30 May 2023 23:58:22 -0700 (PDT) MIME-Version: 1.0 From: yu cuilu Date: Wed, 31 May 2023 14:58:12 +0800 Message-ID: Content-Type: multipart/alternative; boundary="00000000000078d7d905fcf7d878" Received-SPF: pass client-ip=2607:f8b0:4864:20::f30; envelope-from=yucuilu@gmail.com; helo=mail-qv1-xf30.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-Mailman-Approved-At: Wed, 31 May 2023 09:24:04 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) --00000000000078d7d905fcf7d878 Content-Type: text/plain; charset="UTF-8" missing version: sed (GNU sed) 4.2.2 case 1: fail rm -f ./resolv.conf; touch ./resolv.conf; sed -i 'a nameserver 8.8.8.8' ./resolv.conf ; cat resolv.conf case 2: ok rm -f ./resolv.conf; echo a > ./resolv.conf; sed -i 'a nameserver 8.8.8.8' ./resolv.conf ; cat resolv.conf --00000000000078d7d905fcf7d878 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
missing version:
sed (GNU sed) 4.2.2

case 1: fail

rm -f =C2=A0./resolv.conf; =C2=A0
tou= ch ./resolv.conf; =C2=A0sed -i 'a nameserver 8.8.8.8' ./resolv.conf= ; cat resolv.conf

case 2: ok

rm -f =C2=A0.= /resolv.conf; =C2=A0
echo a > ./resolv.conf; =C2=A0sed -i 'a name= server 8.8.8.8' ./resolv.conf ; cat resolv.conf --00000000000078d7d905fcf7d878-- From unknown Tue Jun 17 22:23:32 2025 X-Loop: help-debbugs@gnu.org Subject: bug#63813: sed bug Resent-From: Davide Brini Original-Sender: "Debbugs-submit" Resent-CC: bug-sed@gnu.org Resent-Date: Wed, 31 May 2023 20:02:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 63813 X-GNU-PR-Package: sed X-GNU-PR-Keywords: To: 63813@debbugs.gnu.org X-Debbugs-Original-To: bug-sed@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.168556329411368 (code B ref -1); Wed, 31 May 2023 20:02:02 +0000 Received: (at submit) by debbugs.gnu.org; 31 May 2023 20:01:34 +0000 Received: from localhost ([127.0.0.1]:36404 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4S0k-0002xI-Ew for submit@debbugs.gnu.org; Wed, 31 May 2023 16:01:34 -0400 Received: from lists.gnu.org ([209.51.188.17]:55700) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q4S0g-0002x6-Q0 for submit@debbugs.gnu.org; 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envelope-from=dave_br@gmx.com; helo=mout.gmx.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.4 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.4 (--) On Wed, 31 May 2023 14:58:12 +0800, yu cuilu wrote: > missing version: > sed (GNU sed) 4.2.2 > > case 1: fail > > rm -f ./resolv.conf; > touch ./resolv.conf; sed -i 'a nameserver 8.8.8.8' ./resolv.conf ; cat > resolv.conf > > case 2: ok > > rm -f ./resolv.conf; > echo a > ./resolv.conf; sed -i 'a nameserver 8.8.8.8' ./resolv.conf ; c= at > resolv.conf This is all behaving as expected. The description for the "a" command says= : Appending text after a line In the first example, there are no lines at all in the input, so sed has n= o chance to append text after reading a line. In the second example, the input consists of one line, after which sed can append the specified text. =2D- D.