Your message dated Sun, 13 May 2012 13:51:52 -0500 with message-id <20120513185152.GA30299@burratino> and subject line Re: bash: quoting breaks when single quotes are used inside of double quotes, and placed next to an asterisk has caused the Debian Bug report #672794, regarding bash: quoting breaks when single quotes are used inside of double quotes, and placed next to an asterisk to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 672794: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=672794 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: bash Version: 4.1-3 Severity: normal This command works: duplicity full -vinfo --dry-run --no-encryption --include /etc/resolv.conf --exclude '**' /etc/ file:///tmp/ but when quoting is used to store the exclude option inside a variable, the variable does not render properly. There are several syntactically correct ways to do this, but bash fails to handle all of them: options="--exclude '**'" options="--exclude '"\*\*\' options=--exclude\ \'\*\*\' options="--exclude **" options="--exclude \'**\'" duplicity full -vinfo --dry-run --no-encryption --include /etc/resolv.conf ${options} /etc/ file:///tmp/ -- System Information: Debian Release: 6.0.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages bash depends on: ii base-files 6.0squeeze5 Debian base system miscellaneous f ii dash 0.5.5.1-7.4 POSIX-compliant shell ii debianutils 3.4 Miscellaneous utilities specific t ii libc6 2.11.3-3 Embedded GNU C Library: Shared lib ii libncurses5 5.7+20100313-5 shared libraries for terminal hand Versions of packages bash recommends: ii bash-completion 1:1.2-3 programmable completion for the ba Versions of packages bash suggests: pn bash-doc <none> (no description available) -- no debconf information
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--- Begin Message ---notfound 672794 bash/4.1-3 quit Hi, anonymous coward wrote: > but when quoting is used to store the exclude option inside a > variable, the variable does not render properly. There are several > syntactically correct ways to do this, but bash fails to handle all of > them: > > options="--exclude '**'" > options="--exclude '"\*\*\' > options=--exclude\ \'\*\*\' > options="--exclude **" > options="--exclude \'**\'" > > duplicity full -vinfo --dry-run --no-encryption --include /etc/resolv.conf > ${options} /etc/ file:///tmp/ This behavior is required by POSIX[1]. A quote character that is the result of expansion is not a candidate for quote removal, and parameter expansion occurs before pathname expansion. Your best bet would be something like this: # emulate "git rev-parse --sq-quote" sq_quote () { result= for arg do result="$result $( printf '%s' "$arg" | sed -e "s/'/'\\\\''/g" -e "1 s/^/'/" -e "\$ s/\$/'/" )" done printf '%s\n' "$result" } options=$(sq_quote --exclude '**') eval "duplicity ... $options ..." Or, written more directly: options="--exclude '**'" eval "duplicity ... $options ..." Thanks for writing, Jonathan [1] http://unix.org/2008edition/
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