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From: Todor Vlaev <t.vlaev@gmail.com>
To: dash@vger.kernel.org
Subject: [EXPAND] Nested parameter expansion results in an empty string when quoted
Date: Tue, 28 Aug 2012 16:27:24 +0300	[thread overview]
Message-ID: <CAAv6kGS+Cgg2JmRqCeWNZtxpoUuJ0wBSLac0BJJGW8kuiqUgwQ@mail.gmail.com> (raw)

Hi,

While playing around with parameter expansion I noticed that the
following didn't work in dash  (dash 0.5.5.1-7.4ubuntu1) as compared
to bash even though I believe it should be POSIX-compliant:

my_str=swan; last_char="${my_str#${my_str%?}}"; echo ${last_char}

If the double quotes are removed, the last character is printed correctly.

At a quick glance through the commits after the 0.5.5.1 release I saw
the following bug fix. Could it be related?

0d7d66039b614b642c775432fd64aa8c11f9a64d
[EXPAND] Fix quoted pattern patch breakage

Thanks,
Todor

             reply	other threads:[~2012-08-28 13:27 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-28 13:27 Todor Vlaev [this message]
2012-08-28 23:00 ` [EXPAND] Nested parameter expansion results in an empty string when quoted Jilles Tjoelker
2012-08-29 13:46   ` Todor Vlaev
2012-08-29 16:35     ` Jonathan Nieder
2013-08-23 10:04 ` Herbert Xu

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