Just had a similar problem.

First you need to sort the keys descending by length.

Then you need to build an "or'ed" pattern of those keys.

Like this the longest match has priority.

Something like:

$pattern = join "|", @sorted;
$text =~ s/($pattern)/$hash{$1}/g;

[download]

Untested typing into my mobile :)

update

Your code has some issues, first you push the tgt (?) into a HoA

Then you are translating line by line, which won't catch expressions spanning line breaks.

Cheers Rolf

(addicted to the Perl Programming Language and ☆☆☆☆ :)

In reply to Re: replace text using hash by LanX
in thread replace text using hash by Anonymous Monk

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.