The help on Regex states that:
" These escape sequences can also be used within a
class. For example, `[\l_]' is the same as
Two errors here:
\l actually matches any letter, including international
accented ones. I'm guessing it is locale dependent like
it is in Perl.
At least it has the same limitation, causing error #2:
using it to construct character classes does _not_
Correspondingly for \L.
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