Sadly my template module is about a 1000 lines past being an SSCCE

The point of the SSCCE is that you strip out the 980 lines which are irrelevant to the problem at hand and just show us the self-contained, minimal script of 20 lines or less which reproduces the warning.

I am using :encoding(UTF-8) when I slurp the file so ... it's a puzzle why that's not enough to have the text encoded and flagged as utf8.

If you use that when slurping your input it will be decoded (not encoded). This is so that your code can then work on it as character data. Once you have finished munging it and are ready to output it, that is the point at which it needs to be encoded (and from the warning in the OP, this is the step which is missing).

🦛

In reply to Re^3: FCGI, tied handles and wide characters by hippo
in thread FCGI, tied handles and wide characters by Maelstrom

Title:
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, details, 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, summary, 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.