Ruby on Rails - unable to convert “\\x89” from ASC

问题:

I am installing ruby on rails 4.0.0 on my linux system , but i am getting this kind of errors unable to convert "\x89" from ASCII-8BIT to UTF8 for guides/assets/images/getting_started/routing_error_no_route_matches.png, skipping and many similar errors , i read here that it won't cause any effect ,but i do not understand why it is coming . Any pointers?

回答1:

You need to update / install a version of the rdoc gem that supports the conversion. Then these errors won't appear during generation of the documentation when you install rails or when you regenerate the documentation.

gem install rdoc

Then to regenerate the documentation

gem rdoc --all --overwrite

回答2:

Set such environment variables before you do install:

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8

回答3:

If you prefer using online documentation to using rdoc and ri, then you can avoid these errors and speed up your installs by skipping the rdoc and ri installations. Michael Hartl recommends this in his book. Just add a .gemrc file to your home directory with the following contents:

install: --no-rdoc --no-ri
update: --no-rdoc --no-ri