method

strip_heredoc

v3.2.1 - Show latest stable - 0 notes - Class: String

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What's this?

strip_heredoc() public

Strips indentation in heredocs.

For example in

if options[:usage]
  puts <<-USAGE.strip_heredoc
    This command does such and such.

    Supported options are:
      -h         This message
      ...
  USAGE
end

the user would see the usage message aligned against the left margin.

Technically, it looks for the least indented line in the whole string, and removes that amount of leading whitespace.

Show source

# File activesupport/lib/active_support/core_ext/string/strip.rb, line 22
  def strip_heredoc
    indent = scan(/^[ \t]*(?=\S)/).min.try(:size) || 0
    gsub(/^[ \t]{#{indent}}/, '')
  end

strip_heredoc

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