I'm reading the Perl 5.26.1 perlop documentation about the indented here-doc. It says:
The here-doc modifier ~ allows you to indent your here-docs to make the code more readable: 
   if ($some_var) {
      print <<~EOF;
        This is a here-doc
        EOF
    }

[download]
This will print... 
This is a here-doc

[download]
...with no leading whitespace.

The delimiter is used to determine the exact whitespace to remove from the beginning of each line.

It's not obvious to me what "the delimiter" is and how was it declared. To me, it's an odd use of the word "delimiter".

Am I correct in assuming that what's meant is: when you write "<<~EOF;", Perl will take the initial whitespace characters from the following line as an "indentation definition" and remove it from the beginning of every line in the here-doc?

In reply to indented here-doc "delimiter" by ibm1620

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.