Date: Sat, 9 Nov 2019 00:50:52 +0300
From: =?UTF-8?B?T8SfdXo=?= <[email protected]>
Message-ID:
<cah7i3lrzfvj1eljztdqzf1ttqhi9fdra7xwwywrd4rgwjs0...@mail.gmail.com>
These two
| v=foo
| echo ${v#[[:"lower":]]}
| case foo in (*[![:"lower":]]*) echo bar; esac
are because bash believes that the character class name must not
be quoted (which is likely to be clarified to be incorrect in the
next revision of posix).
This one
| case foo in (*[![":lower":]]*) echo bar; esac
is correct, as "foo" does not contain a ']' which would be required
to match there (quoting the ':' means there is no character class,
hence we have instead (the negation of) a char class containing '[' ':'
'l' 'o' 'w' 'e' ';r' (and ':' again), preceded by anything, and
followed by ']' and anything. foo does not match. f]oo would.
kre
