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a58cae77f7
(https://github.com/ruby/irb/pull/573)
`MagicFile` was introduced around v0.9.6, which was like 14~15 years ago.
It was needed because back then we needed to read a file's magic comment
to determine the encoding of it, and read it with that encoding.
Commit: 3ee79e89ad
But now both EN and JA's help-message file are UTF-8 and have removed the
encoding comment, we don't need to open them with `MagicFile` anymore.
30 lines
634 B
Ruby
30 lines
634 B
Ruby
# frozen_string_literal: false
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#
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# irb/help.rb - print usage module
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# by Keiju ISHITSUKA(keiju@ishitsuka.com)
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#
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require_relative 'magic-file'
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module IRB
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# Outputs the irb help message, see IRB@Command+line+options.
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def IRB.print_usage
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lc = IRB.conf[:LC_MESSAGES]
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path = lc.find("irb/help-message")
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space_line = false
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File.open(path){|f|
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f.each_line do |l|
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if /^\s*$/ =~ l
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lc.puts l unless space_line
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space_line = true
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next
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end
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space_line = false
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l.sub!(/#.*$/, "")
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next if /^\s*$/ =~ l
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lc.puts l
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end
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}
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end
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end
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