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Postings from December 2010
On Thu, Dec 9, 2010 at 1:35 AM, Jonathan Pool <pool@utilika.org> wrote:
> > Jonathan, you said that the encoding was utf8, but \x80 is not a legal
> utf8-encoded character. But it should have warned that it was substituting
> FFFD.
>
> The script reads a line from a UTF8-encoded file into a Perl scalar.
>
The file is being read in without issue. The problem is with the literals in
the source file.
It then operates on the scalar.
>
> In man perlunicode, one reads: "Unless explicitly stated, Perl operators
> use [...]
>
You explicitly stated you wanted different behaviour from the literal by
using "use encoding".
perl -e'use encoding "utf8"; qr/[\x7F-\x80]'
means
perl -e'qr/{{{decode("utf8", "[\x7F-\x80]")}}}/'
which becomes
perl -e'qr/[\x7F-\x{FFFD}]/'
The effect of "use encoding" on \x escapes in literals and the like is why
some people avoid "use encoding".
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