Test_Runner generation and invalid byte sequence error

[lwriemen]

Our builds were previously MS Windows shell only. I've been adapting our test framework to work under cygwin, and I ran into problems where generate_test_runner.rb was parsing a C file that had the degree symbol <0xB0> in line comments. The following error was generated:
../framework/unity/auto/generate_test_runner.rb:76:in gsub': invalid byte sequence in UTF-8 (ArgumentError) from ../framework/unity/auto/generate_test_runner.rb:76:infind_tests'
from ../framework/unity/auto/generate_test_runner.rb:42:in block in run' from ../framework/unity/auto/generate_test_runner.rb:41:inopen'
from ../framework/unity/auto/generate_test_runner.rb:41:in run' from ../framework/unity/auto/generate_test_runner.rb:308:in

'
After much searching, I found that changing line 41 of generate_test_runner.rb from:
File.open(input_file, 'r') do |input|
to:
File.open(input_file, 'r:ISO-8859-1') do |input|
corrected the problem. I'm not sure if this is the best way to fix the problem, or if it just should be in an app note.