dash: read does not ignore trailing spaces

[Gioele Barabucci <gioele@xxxxxxxxx>]

Hello,

I am forwarding a bug [1] reported by a Debian user: `read` does not
ignore trailing spaces. The current version of dash is affected by
this bug.

A simple test from the original reporter:

    $ dash -c 'echo "  a b  " | { read v ; echo "<$v>" ; }'
    <a b  >

    $ bash -c 'echo "  a b  " | { read v ; echo "<$v>" ; }'
    <a b>

Other shells like posh and mksh behave like bash.

This error is reproducible with dash 0.5.7 and with the current master
git master branch, commit 2e5842258bd5b252ffdaa630db09c9a19a9717ca.

[1] https://bugs.debian.org/794965

--
Gioele Barabucci <gioele@xxxxxxxxx>

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