Encoding of input file is not respected

[voxik]

I wonder what was the intention of #528? I am asking since this fails:

$ LC_ALL=cs_CZ.ISO-8859-2 rspec ./spec/actions/inject_into_file_spec.rb:107
Run options: include {:locations=>{"./spec/actions/inject_into_file_spec.rb"=>[107]}}
F

Failures:

  1) Thor::Actions::InjectIntoFile#invoke! can insert chinese
     Failure/Error: if force || !content.include?(replacement)
     
     Encoding::CompatibilityError:
       incompatible character encodings: ISO-8859-2 and UTF-8
     # ./lib/thor/actions/inject_into_file.rb:102:in `include?'
     # ./lib/thor/actions/inject_into_file.rb:102:in `replace!'
     # ./lib/thor/actions/inject_into_file.rb:57:in `invoke!'
     # ./lib/thor/actions.rb:94:in `action'
     # ./lib/thor/actions/inject_into_file.rb:27:in `insert_into_file'
     # ./spec/actions/inject_into_file_spec.rb:20:in `block in invoke!'
     # ./spec/helper.rb:55:in `capture'
     # ./spec/actions/inject_into_file_spec.rb:20:in `invoke!'
     # ./spec/actions/inject_into_file_spec.rb:108:in `block (3 levels) in <top (required)>'

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1 example, 1 failure

Failed examples:

rspec ./spec/actions/inject_into_file_spec.rb:107 # Thor::Actions::InjectIntoFile#invoke! can insert chinese

Previously, if nothing else, the encoding of File.binread was given. Now it gets a file of unknown encoding, tries to apply system encoding and do some stuff above it. If the encoding is assumed, then it should be probably specified somewhere or there should be done a conversion.

[voxik]

BTW it seems that #191 is the same issue.