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Message-ID: | <4A1EF2CE.2060509@sidefx.com> |
Date: | Thu, 28 May 2009 16:23:42 -0400 |
From: | Edward Lam <edward AT sidefx DOT com> |
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To: | cygwin AT cygwin DOT com |
Subject: | Re: 1.7.0-48: [BUG] Passing characters above 128 from bash command line |
References: | <200905281541 DOT 33404 DOT michael DOT renner AT gmx DOT de> <20090528145106 DOT GA23970 AT ednor DOT casa DOT cgf DOT cx> <4A1EAA75 DOT 7030203 AT sidefx DOT com> <4A1EAAED DOT 1060702 AT cygwin DOT com> <4A1EAD61 DOT 5010308 AT sidefx DOT com> <4A1EAD91 DOT 1060701 AT sidefx DOT com> <e2480c70905281131u37651a2eoba946637bd414516 AT mail DOT gmail DOT com> |
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Alexey Borzenkov wrote: > On Thu, May 28, 2009 at 7:28 PM, Edward Lam <edward AT sidefx DOT com> wrote: >> PS. In case you haven't noticed, copyright.txt is not a long file. It >> consists of a single byte, 0xA9. > > Did you try utf-8 encoding copyright.txt? Perhaps your locale is utf-8 > and the encoder fails. How is one supposed to determine one's locale in cygwin? I do NOT have LANG, or any of the LC environment variables set. I even tried explicitly setting LANG=C and it still fails. The problem does seem to stem from the new UTF-8 support in cygwin 1.7. However, I think something is going on here that is unexpected because trying something similar on Linux has no problems. To confirm that it was an UTF-8 related problem, let me repeat the steps slightly differently again. Here we assume that I've already got bug.exe compiled which simply prints out its arguments. $ export LANG=C $ ./bug arg1 "before `cat copyright.txt` after" arg3 0: E:\cygwin1.7\tmp\bug.exe 1: arg1 2: before *Notice that argc is 3 when it should be 4!* $ piconv -f iso-8859-1 -t utf8 < copyright.txt > fubar.txt $ ./bug arg1 "before `cat fubar.txt` after" arg3 0: E:\cygwin1.7\tmp\bug.exe 1: arg1 2: before © after 3: arg3 *So now everything works because I converted the character into UTF-8.* I think what this points to is some form of invalid source encoding of the command line argument when spawning NATIVE applications. Here's what happens when I try to compile bug.c using cygwin's gcc: $ gcc bug.c -o bug-gcc.exe $ ./bug-gcc arg1 "before `cat copyright.txt` after" arg3 0: ./bug-gcc 1: arg1 2: before © after 3: arg3 So there seems to be some sort of special marshaling of the command line arguments that only works when spawning cygwin apps, but breaks when running under native apps. Regards, -Edward -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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