X-Recipient: archive-cygwin AT delorie DOT com DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6A164384B110 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com; s=default; t=1603074738; bh=fyUOCDV98Ad5+4ZrlkXx+zOfRSbgAyUy9ZBtdIBcZsM=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=wrQWI6EIiTEkfcNHjYQiVmMZlHkaIeUL7GBu9hHMBT/5Y78NfJPRCeW7R4zJx0Qtp bQ6qfbKbZbeFTYilKFWwhadhyyq4MESvLpYU11lp7ilHtFLaorSmdSJ4fX9uCQz7yz DsuXq8leg4Utu82ZOcpeInGAJqfbZRF8njbvGpO4= X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org A7ECD3858020 X-Authority-Analysis: v=2.4 cv=NYRYa0P4 c=1 sm=1 tr=0 ts=5f8cfaad a=95A0EdhkF1LMGt25d7h1IQ==:117 a=95A0EdhkF1LMGt25d7h1IQ==:17 a=IkcTkHD0fZMA:10 a=SMorJkV_YP8A:10 a=afefHYAZSVUA:10 a=vpfx9Xo2_UxmPigGMZAA:9 a=QEXdDO2ut3YA:10 To: =?UTF-8?Q?J=C3=A9r=C3=B4me_Froissart?= Subject: Re: Unconsistent command-line parsing in case of UTF-8 quoted arguments X-PHP-Originating-Script: 501:rcmail.php MIME-Version: 1.0 Date: Sun, 18 Oct 2020 19:32:11 -0700 In-Reply-To: References: <634821436 DOT 20201004141809 AT yandex DOT ru> Message-ID: <6a30ae30f769cba0dbf7a80423c20ac1@mail.kylheku.com> X-Sender: 743-406-3965 AT kylheku DOT com User-Agent: Roundcube Webmail/0.9.2 X-CMAE-Envelope: MS4xfClbFHkn0Fz3byar/+cKhxmUuXYmARsvOOuypKgHOCippCOXCBw7KVZ3HCk0kPRvB89bYxwiAf9KyLixK5vTG0JFQtS1WBJrbCGwjU+vNSTqgZ/7AAMm G6K0WK/5xD73pMugUBtzSEU7yLTHPoW7f59rmmlbWX4uQ/eAvoJgoypxn/85VREg4N6tT9IHbb0ujnxnWFZWaBpcUsnRkVzFWqtehGGPfQOSOxdPFpcP2QD6 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, FROM_STARTS_WITH_NUMS, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: "Kaz Kylheku \(Cygwin\) via Cygwin" Reply-To: "Kaz Kylheku \(Cygwin\)" <743-406-3965 AT kylheku DOT com> Cc: cygwin AT cygwin DOT com Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: cygwin-bounces AT cygwin DOT com Sender: "Cygwin" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by delorie.com id 09J2Wj4m002157 On 2020-10-14 14:47, Jérôme Froissart wrote: >> The choice of GetCommandLineA was for illustration purposes; >> had I used GetCommandLineW I would not be able to printf >> using %ls under CMD.EXE, because of code page issues. However >> here is a modified version of the test program that uses >> GetCommandLineW. [ ... ] >> billziss AT xps:~/Projects/t$ ./cyg.exe "foo bar" "Domain\Jérôme" >> 0022 " 0043 C 003a : 005c \ 0055 U 0073 s 0065 e 0072 r >> 0073 s 005c \ 0062 b 0069 i 006c l 006c l 007a z 0069 i >> 0073 s 0073 s 005c \ 0050 P 0072 r 006f o 006a j 0065 e >> 0063 c 0074 t 0073 s 005c \ 0074 t 005c \ 0063 c 0079 y >> 0067 g 002e . 0065 e 0078 x 0065 e 0022 " [ ... ] >> C:\Users\billziss\Projects\t>cyg.exe "foo bar" "Domain\Jérôme" >> 0063 c 0079 y 0067 g 002e . 0065 e 0078 x 0065 e 0020 >> 0020 0022 " 0066 f 006f o 006f o 0020 0062 b 0061 a >> 0072 r 0022 " 0020 0022 " 0044 D 006f o 006d m 0061 a >> 0069 i 006e n 005c \ 004a J 00e9 . 0072 r 00f4 . 006d m >> 0065 e 0022 " Aha! There is a hint of a problem here. Firstly, the command lines are obviously different. The Cygwin one starts with a quote that we did not see, wrapping the full path to the executable: "C:\Users\billziss\Projects\t\cyg.exe" It ends there. Why is that? I'm guessing that the command line was tokenized destructively; a null character was written. But under cmd.exe, we see the whole command line, without any null character having been written in it. Moreover, the program name just appears as the original relative path cyg.exe with no quotes. What a mess. :) -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple