小编dav*_*shi的帖子

我试图弄清楚ruby 2.2.3中URI.escape的默认不安全字符集是什么.该文件说:

默认情况下使用REGEXP :: UNSAFE

但我无法在URI模块中找到任何常量.

此外,此代码(下面的代码段)自2009年以来标记为"过时"的escape/unescape方法.为什么它们已经过时了？

lib/uri/common.rb:97

def escape(*arg)
  warn "#{caller(1)[0]}: warning: URI.escape is obsolete" if $VERBOSE
  DEFAULT_PARSER.escape(*arg)
end

文档是错误/过时了吗？

这是错误日志，当我使用bundle install.

我想在Github上搭建一个博客，所以使用Octopress，但是没有成功。如果您有其他方法，请告诉我，谢谢。

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb 
checking for main() in -lc... yes
creating Makefile

make "DESTDIR="
make: *** No rule to make target `"/Applications/Xcode', needed by `redcloth_attributes.o'.  Stop.


Gem files will remain installed in /var/folders/zb/bxbkz6pd5fscs29zq2hk1b4h0000gn/T/bundler20141230-81071-q2p8fv/RedCloth-4.2.9/gems/RedCloth-4.2.9 for inspection.
Results logged to /var/folders/zb/bxbkz6pd5fscs29zq2hk1b4h0000gn/T/bundler20141230-81071-q2p8fv/RedCloth-4.2.9/gems/RedCloth-4.2.9/ext/redcloth_scan/gem_make.out
An error occurred while installing RedCloth (4.2.9), and Bundler cannot
continue.
Make sure that `gem install RedCloth -v '4.2.9'` succeeds before bundling.