Package: bash
Version: 4.2-4
Severity: normal
Hi.
Default value parameter expansion works differently in dash and bash, and i
believe, that dash's behavior is correct one.
$ bash -c 'set -- ""; echo "A${*:-w}R";'
AR
$ dash -c 'set -- ""; echo "A${*:-w}R";'
AwR
Because the colon is present, if parameter ("$*" in the example) is null, it
should be replaced with word (character 'w' in the example). And parameter is
null indeed:
$ bash -c 'set -- ""; echo "A${*}R";'
AR
$ dash -c 'set -- ""; echo "A${*}R";'
AR
but bash still does not replace it with word.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (990, 'testing'), (200, 'unstable'), (100, 'stable-updates'),
(100, 'stable')
Architecture: i386 (i686)
Kernel: Linux 3.2.0-3-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=ru_RU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages bash depends on:
ii base-files 6.11
ii dash 0.5.7-3
ii debianutils 4.3.2
ii libc6 2.13-35
ii libtinfo5 5.9-10
Versions of packages bash recommends:
ii bash-completion 1:2.0-1
Versions of packages bash suggests:
ii bash-doc 4.2-4
-- no debconf information
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