问题是由一些名为LustyExplorer的插件引起的。通常，当我在Vim中遇到一些错误时，我总是首先删除所有插件和自定义。但在转到Neovim之后，我忘了先做这件事。
我最近刚使用以下命令在OsX El Capitan v10.11.6上安装了nvim 0.2.2：brew install neovim
$ brew info neovim
neovim: stable 0.2.2 (bottled), HEAD
Ambitious Vim-fork focused on extensibility and agility
https://neovim.io/
/usr/local/Cellar/neovim/0.2.2 (1,374 files, 17.6MB) *
Poured from bottle on 2017-12-27 at 22:45:13
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/neovim.rb
==> Dependencies
Build: cmake ✘, lua@5.1 ✘, pkg-config ✔
Required: gettext ✔, jemalloc ✔, libtermkey ✔, libuv ✔, libvterm ✔, luajit ✔, msgpack ✔, unibilium ✔
$ nvim --version
NVIM v0.2.2
Build type: Release
LuaJIT 2.0.5
Compilation: /usr/local/Homebrew/Library/Homebrew/shims/super/clang -Wconversion -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -DNDEBUG -DMIN_LOG_LEVEL=3 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -I/tmp/neovim-20171118-36724-uevp4/neovim-0.2.2/build/config -I/tmp/neovim-20171118-36724-uevp4/neovim-0.2.2/src -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/include -I/usr/local/opt/gettext/include -I/usr/include -I/tmp/neovim-20171118-36724-uevp4/neovim-0.2.2/build/src/nvim/auto -I/tmp/neovim-20171118-36724-uevp4/neovim-0.2.2/build/include
Compiled by brew@ElCapitan-2.local
Features: +acl +iconv +jemalloc +tui
See ":help feature-compile"
system vimrc file: "$VIM/sysinit.vim"
fall-back for $VIM: "/usr/local/Cellar/neovim/0.2.2/share/nvim"
Run :checkhealth for more info
nvim正常运行。但是在安装neovim RubyGem之后，我无法在:help中使用neovim命令。应用程序立即崩溃：
$ gem install neovim
Fetching: neovim-0.6.2.gem (100%)
Successfully installed neovim-0.6.2
1 gem installed
在:help中执行nvim命令会出现以下错误消息：
nvim(69661,0x7fff7274e000) malloc: *** error for object 0x7f9414310d00: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
[1] 69661 abort nvim
我使用rvm 1.26.11来管理ruby。
$ rvm list
rvm rubies
=* ruby-2.1.1 [ x86_64 ]
$ rvm --version
rvm 1.26.11 (latest) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
$ rvm gemdir
/Users/mertnuhoglu/.rvm/gems/ruby-2.1.1
$ gem --version
2.4.8