Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

"the" internal format for Unicode strings is actually two different formats: ISO-8859-1 and UTF8. As an optimization, Perl may use ISO-8859-1 even though the original source was UTF-8.

Encode::_is_utf8 (not encode::is_utf8) will return true if the string is internally encoded as UTF8, and can return false even though you properly decoded.

Recommendation: do not look at the UTF8 flag. It is next to useless, except for internals debugging and performance tweaking.

Pretend that the UTF8 flag does not exist.

Do not use Encode::_is_utf8 (it is prefixed with an underscore for a reason: you should not have to use this in normal code).

Really, Perl's Unicode strings may be encoded as *ANYTHING* internally. Don't look at the internal buffer, unless you really want to mess with the internals. You do not need to know the internals for simple text processing, as is the case in the OP's problem.

In reply to Re^4: Unicode substitution regex conundrum by Juerd
in thread Unicode substitution regex conundrum by Polyglot

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the questions are moot...

    How do I use this? | Other CB clients
    Other Users?
    Others having an uproarious good time at the Monastery: (4)
    As of 2018-04-20 09:15 GMT
    Find Nodes?
      Voting Booth?