Hi, I test using plain BSD Shells. I do not use any BASH extensions. I looked into the problem, and still believe it is a fatal bug in dash. Violating the POSIX semantics.
Here a Strip-Down example: cat z.sh << 'EOF' echo "fprintf(stderr, \"result: <plain>\\n\");" echo "fprintf(stderr, \"result: <plain>\n\");" echo 'fprintf(stderr, "result: <plain>\n");' echo 'fprintf(stderr, "result: <plain>\\n");' EOF BSD-Shell $ sh --version Illegal option -- sh z.sh fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\\n"); BASH $ bash --version GNU bash, version 3.2.39(1)-release (i386-portbld-freebsd6.4) Copyright (C) 2007 Free Software Foundation, Inc. $ bash z.sh fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\n"); fprintf(stderr, "result: <plain>\\n"); dash-0.5.4-12 (debian) $ dash z.sh fprintf(stderr, "result: <plain> "); fprintf(stderr, "result: <plain> "); fprintf(stderr, "result: <plain> "); fprintf(stderr, "result: <plain>\n"); Docs: https://wiki.ubuntu.com/DashAsBinSh echo: Options to echo are not portable. In particular, the echo -e option is implemented by some shells, including bash, to expand escape sequences. However, dash is one of the other family of shells that instead expands escape sequences by default. Do not rely on either behaviour. If you need to print a string including any backslash characters, use the printf command instead, which is portable and much more reliable. http://linux.die.net/man/1/dash Single Quotes 2009-01-03 17:31:40 dinoex Enclosing characters in single quotes preserves the literal meaning of all the characters (except single quotes, making it impossible to put single-quotes in a single-quoted string). Problem: dash expands escape sequences even in Quoted text! It is mentioned that the internal echo does auto-de-escaping for arguments. According to: http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html 2.2.2 Single-Quotes 2009-01-03 17:18:19 dinoex Enclosing characters in single-quotes ( '' ) shall preserve the literal value of each character within the single-quotes. A single-quote cannot occur within single-quotes. -- Fix /bin/sh https://bugs.launchpad.net/bugs/313403 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
