Annotate 给出 Nomethod 错误

Question

我有 ruby​​ 1.9.2 和 rails 3.1。我试图让 annotate 2.4.0 工作，但我得到 nomethod 错误。我已经尝试卸载并重新安装，但它没有帮助。跳转后请查看线轴。任何有关如何进行的建议都会有所帮助。

~/myapps/testapp/app>sudo gem install annotate
Fetching: annotate-2.4.0.gem (100%)
Successfully installed annotate-2.4.0
1 gem installed
~/myapps/testapp/app>bundle exec annotate -e -p before
/Users/mymachine/.rvm/gems/ruby-1.9.2-p290/gems/annotate-2.4.0/bin/annotate:61:in block (2 levels) in <top (required)>': undefined methodeach' for nil:NilClass (NoMethodError)
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1308:in call'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1308:inblock in parse_in_order'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1264:in catch'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1264:inparse_in_order'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1258:in order!'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1349:inpermute!'
from /Users/mymachine/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/optparse.rb:1370:in parse!'
from /Users/mymachine/.rvm/gems/ruby-1.9.2-p290/gems/annotate-2.4.0/bin/annotate:8:in'
from /Users/mymachine/.rvm/gems/ruby-1.9.2-p290/bin/annotate:19:in load'
from /Users/mymachine/.rvm/gems/ruby-1.9.2-p290/bin/annotate:19:in'

Answer 1

-e 标志需要你没有给出的参数。

你可以通过查看堆栈跟踪来判断这一点，错误是nil 没有方法each。由于在 optparse 文件中引发了错误，因此您可以推断 optparse 尝试迭代某些不存在的选项。当然，这会导致 annotate -h 显示“-e, --exclude [tests,fixtures] 不要注释固定装置、测试文件或两者”