Perl::Critic::Policy::ValuesAndExpressions::RequireUpperCaseHeredocTerminator(3pm)

Perl::Critic::Policy::ValuesAndExpressions::RequireUpperCaseHeredocTerminator3pm

Write " <<'the_end'; " instead of " <<'theend'; ".

Affiliation

This Policy is part of the core Perl::Critic distribution.

Overview

For legibility, HEREDOC terminators should be all UPPER CASE letters (and numbers), without any whitespace. Conway also recommends using a standard prefix like "END_" but this policy doesn't enforce that.

  print <<'the End';  #not ok
  Hello World
  the End
  print <<'THE_END';  #ok
  Hello World
  THE_END

Configuration

This Policy is not configurable except for the standard options.

Releases

10 releases since Debian 5.0 (Lenny); the text changed 9 times.

  1. 5.0
  2. 6.0
  3. 7
  4. 8
  5. 9
  6. 10
  7. 11
  8. 12
  9. 13
  10. Arch

Author

Jeffrey Ryan Thalhammer <[email protected]>

From perl-perl-critic 1.156-3 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.