How to get Readline support in IRB using RVM on Ubuntu 11.10

Question

I have tried everything I can think of to get this to work, to no avail so here I am requesting suggestions on how to debug.

Firstly, runnning Ubuntu 11.10

Installed rvm:

$ bash < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)

Installed readline using apt-get:

$ sudo apt-get install libreadline-dev

Check for readline install:

$ dpkg --get-selections | grep readline
lib64readline-gplv2-dev             install
lib64readline5                  install
libreadline-dev                 install
libreadline5                    install
libreadline6                    install
libreadline6-dev                install
readline-common                 install

Install ruby, with readline support?

$ rvm install 1.9.2 --with-readline-dir=/usr

Here is rvm version:

$ rvm --version

rvm 1.9.2 by Wayne E. Seguin (wayneeseguin@gmail.com) [https://rvm.beginrescueend.com/]

Lets try the ruby shell:

$ irb
1.9.2 :001 > puts "add history"
add history
 => nil 
1.9.2 :002 > ^[[A^[[A^[[A^[[A^[[A <------ PRESS UP ARROW DOES THIS

No, ok so if its not going to work with ubuntu's readline version??? lets try with rvm's own version of readline:

$ rvm pkg install readline
Fetching readline-5.2.tar.gz to /home/keith/.rvm/archives
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 1989k  100 1989k    0     0   318k      0  0:00:06  0:00:06 --:--:--  418k
Extracting readline-5.2.tar.gz to /home/keith/.rvm/src
Applying patch '/home/keith/.rvm/patches/readline-5.2/shobj-conf.patch'...
Prepare readline in /home/keith/.rvm/src/readline-5.2.
ERROR: Error running 'autoreconf -is --force', please read /home/keith/.rvm/log/readline/autoreconf.log
Configuring readline in /home/keith/.rvm/src/readline-5.2.
Compiling readline in /home/keith/.rvm/src/readline-5.2.
Installing readline to /home/keith/.rvm/usr
Fetching readline-6.2.tar.gz to /home/keith/.rvm/archives
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 2224k  100 2224k    0     0   310k      0  0:00:07  0:00:07 --:--:--  444k
Extracting readline-6.2.tar.gz to /home/keith/.rvm/src
Applying patch '/home/keith/.rvm/patches/readline-6.2/patch-shobj-conf.diff'...
Prepare readline in /home/keith/.rvm/src/readline-6.2.
ERROR: Error running 'autoreconf -is --force', please read /home/keith/.rvm/log/readline/autoreconf.log
Configuring readline in /home/keith/.rvm/src/readline-6.2.
Compiling readline in /home/keith/.rvm/src/readline-6.2.
Installing readline to /home/keith/.rvm/usr

Ok, there's an error there, lets take a look:

$ more /home/keith/.rvm/log/readline/autoreconf.log
[2011-11-17 22:31:15] autoreconf -is --force
autoheader: warning: missing template: CTYPE_NON_ASCII
autoheader: Use AC_DEFINE([CTYPE_NON_ASCII], [], [Description])
autoheader: warning: missing template: FIONREAD_IN_SYS_IOCTL
autoheader: warning: missing template: HAVE_BSD_SIGNALS
autoheader: warning: missing template: HAVE_GETPW_DECLS
autoheader: warning: missing template: HAVE_LANGINFO_CODESET
autoheader: warning: missing template: HAVE_MBRLEN
autoheader: warning: missing template: HAVE_MBSCMP
autoheader: warning: missing template: HAVE_MBSNRTOWCS
autoheader: warning: missing template: HAVE_MBSRTOWCS
autoheader: warning: missing template: HAVE_MBSTATE_T
autoheader: warning: missing template: HAVE_POSIX_SIGNALS
autoheader: warning: missing template: HAVE_POSIX_SIGSETJMP
autoheader: warning: missing template: HAVE_STRUCT_DIRENT_D_FILENO
autoheader: warning: missing template: HAVE_STRUCT_DIRENT_D_INO
autoheader: warning: missing template: HAVE_USG_SIGHOLD
autoheader: warning: missing template: HAVE_WCRTOMB
autoheader: warning: missing template: HAVE_WCSCOLL
autoheader: warning: missing template: HAVE_WCSDUP
autoheader: warning: missing template: HAVE_WCTYPE
autoheader: warning: missing template: HAVE_WCWIDTH
autoheader: warning: missing template: MUST_REINSTALL_SIGHANDLERS
autoheader: warning: missing template: NO_MULTIBYTE_SUPPORT
autoheader: warning: missing template: SPEED_T_IN_SYS_TYPES
autoheader: warning: missing template: STRCOLL_BROKEN
autoheader: warning: missing template: STRUCT_WINSIZE_IN_SYS_IOCTL
autoheader: warning: missing template: STRUCT_WINSIZE_IN_TERMIOS
autoheader: warning: missing template: TIOCSTAT_IN_SYS_IOCTL
autoheader: warning: missing template: VOID_SIGHANDLER
autoreconf: /usr/bin/autoheader failed with exit status: 1

And as expected irb isn't working with readline:

$ rvm install 1.8.7 --with-readline-dir=\$HOME/.rvm/usr
Installing Ruby from source to: /home/keith/.rvm/rubies/ruby-1.8.7-p352, this may take a while depending on your cpu(s)...

ruby-1.8.7-p352 - #fetching 
ruby-1.8.7-p352 - #extracting ruby-1.8.7-p352 to /home/keith/.rvm/src/ruby-1.8.7-p352
ruby-1.8.7-p352 - #extracted to /home/keith/.rvm/src/ruby-1.8.7-p352
Applying patch 'stdout-rouge-fix' (located at /home/keith/.rvm/patches/ruby/1.8.7/stdout-rouge-fix.patch)
ruby-1.8.7-p352 - #configuring 
ruby-1.8.7-p352 - #compiling 
ruby-1.8.7-p352 - #installing 
Removing old Rubygems files...
Installing rubygems-1.8.10 for ruby-1.8.7-p352 ...
Installation of rubygems completed successfully.
ruby-1.8.7-p352 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.8.7-p352 - #importing default gemsets (/home/keith/.rvm/gemsets/)
Install of ruby-1.8.7-p352 - #complete 
$ irb
Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.
You may follow 'rvm notes' for dependencies and/or read the docs page https://rvm.beginrescueend.com/packages/readline/ . Be sure you 'rvm remove X ; rvm install X' to re-compile your ruby with readline support after obtaining the readline libraries.
1.8.7 :001 > 

Have I installed all the rvm requirements? Yes here look:

$ sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'libxslt1-dev' instead of 'libxslt-dev'
Note, selecting 'libncurses5-dev' instead of 'ncurses-dev'
autoconf is already the newest version.
automake is already the newest version.
bison is already the newest version.
build-essential is already the newest version.
curl is already the newest version.
git-core is already the newest version.
libc6-dev is already the newest version.
libncurses5-dev is already the newest version.
libreadline6 is already the newest version.
libreadline6-dev is already the newest version.
libreadline6-dev set to manually installed.
libsqlite3-0 is already the newest version.
libsqlite3-dev is already the newest version.
libssl-dev is already the newest version.
libtool is already the newest version.
libxml2-dev is already the newest version.
libxslt1-dev is already the newest version.
libyaml-dev is already the newest version.
openssl is already the newest version.
sqlite3 is already the newest version.
subversion is already the newest version.
zlib1g is already the newest version.
zlib1g-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

And so it goes on, and on and on and on.....

$ rvm remove 1.8.7
Removing /home/keith/.rvm/src/ruby-1.8.7-p352...
Removing /home/keith/.rvm/rubies/ruby-1.8.7-p352...
Removing ruby-1.8.7-p352 aliases...
Removing ruby-1.8.7-p352 wrappers...
Removing ruby-1.8.7-p352 environments...
Removing ruby-1.8.7-p352 binaries...

$ rvm install 1.8.7 --with-readline-dir=\$HOME/.rvm/usr
Installing Ruby from source to: /home/keith/.rvm/rubies/ruby-1.8.7-p352, this may take a while depending on your cpu(s)...

ruby-1.8.7-p352 - #fetching 
ruby-1.8.7-p352 - #extracting ruby-1.8.7-p352 to /home/keith/.rvm/src/ruby-1.8.7-p352
ruby-1.8.7-p352 - #extracted to /home/keith/.rvm/src/ruby-1.8.7-p352
Applying patch 'stdout-rouge-fix' (located at /home/keith/.rvm/patches/ruby/1.8.7/stdout-rouge-fix.patch)
ruby-1.8.7-p352 - #configuring 
ruby-1.8.7-p352 - #compiling 
ruby-1.8.7-p352 - #installing 
Removing old Rubygems files...
Installing rubygems-1.8.10 for ruby-1.8.7-p352 ...
Installation of rubygems completed successfully.
ruby-1.8.7-p352 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.8.7-p352 - #importing default gemsets (/home/keith/.rvm/gemsets/)
Install of ruby-1.8.7-p352 - #complete 

$ irb
Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.
You may follow 'rvm notes' for dependencies and/or read the docs page https://rvm.beginrescueend.com/packages/readline/ . Be sure you 'rvm remove X ; rvm install X' to re-compile your ruby with readline support after obtaining the readline libraries.
1.8.7 :001 > 

$ cd ~/.rvm/src/ruby-1.8.7-p352/ext/readline/
$ ruby extconf.rb 
checking for tgetnum() in -lncurses... yes
checking for readline/readline.h... yes
checking for readline/history.h... yes
checking for readline() in -lreadline... yes
checking for rl_filename_completion_function()... yes
checking for rl_username_completion_function()... yes
checking for rl_completion_matches()... yes
checking for rl_deprep_term_function in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completion_append_character in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_basic_word_break_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completer_word_break_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_basic_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completer_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_filename_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_attempted_completion_over in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_library_version in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_event_hook in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_cleanup_after_signal()... yes
checking for rl_clear_signals()... yes
checking for rl_vi_editing_mode()... yes
checking for rl_emacs_editing_mode()... yes
checking for replace_history_entry()... yes
checking for remove_history()... yes
creating Makefile

$ make
gcc -shared -o readline.so readline.o -L. -L/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -Wl,-R/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -L.  -rdynamic -Wl,-export-dynamic    -Wl,-R -Wl,/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -L/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -lruby -lreadline -lncurses  -lrt -ldl -lcrypt -lm   -lc

$ make install
/usr/bin/install -c -m 0755 readline.so /home/keith/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/i686-linux

$ rvm remove 1.8.7
Removing /home/keith/.rvm/src/ruby-1.8.7-p352...
Removing /home/keith/.rvm/rubies/ruby-1.8.7-p352...
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
Removing ruby-1.8.7-p352 aliases...
Removing ruby-1.8.7-p352 wrappers...
Removing ruby-1.8.7-p352 environments...
Removing ruby-1.8.7-p352 binaries...

$ rvm install 1.8.7 --with-readline-dir=\$HOME/.rvm/usr
Installing Ruby from source to: /home/keith/.rvm/rubies/ruby-1.8.7-p352, this may take a while depending on your cpu(s)...
ruby-1.8.7-p352 - #fetching 
ruby-1.8.7-p352 - #extracting ruby-1.8.7-p352 to /home/keith/.rvm/src/ruby-1.8.7-p352
ruby-1.8.7-p352 - #extracted to /home/keith/.rvm/src/ruby-1.8.7-p352
Applying patch 'stdout-rouge-fix' (located at /home/keith/.rvm/patches/ruby/1.8.7/stdout-rouge-fix.patch)
ruby-1.8.7-p352 - #configuring 
ruby-1.8.7-p352 - #compiling 
ruby-1.8.7-p352 - #installing 
Removing old Rubygems files...
Installing rubygems-1.8.10 for ruby-1.8.7-p352 ...
Installation of rubygems completed successfully.
ruby-1.8.7-p352 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.8.7-p352 - #importing default gemsets (/home/keith/.rvm/gemsets/)
Install of ruby-1.8.7-p352 - #complete 

$ irb
Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.
You may follow 'rvm notes' for dependencies and/or read the docs page https://rvm.beginrescueend.com/packages/readline/ . Be sure you 'rvm remove X ; rvm install X' to re-compile your ruby with readline support after obtaining the readline libraries.
1.8.7 :001 > $ 

$ rvm pkg install readline
Fetching readline-5.2.tar.gz to /home/keith/.rvm/archives
Extracting readline-5.2.tar.gz to /home/keith/.rvm/src
Applying patch '/home/keith/.rvm/patches/readline-5.2/shobj-conf.patch'...
Prepare readline in /home/keith/.rvm/src/readline-5.2.
ERROR: Error running 'autoreconf -is --force', please read /home/keith/.rvm/log/readline/autoreconf.log
Configuring readline in /home/keith/.rvm/src/readline-5.2.
Compiling readline in /home/keith/.rvm/src/readline-5.2.
Installing readline to /home/keith/.rvm/usr
Fetching readline-6.2.tar.gz to /home/keith/.rvm/archives
Extracting readline-6.2.tar.gz to /home/keith/.rvm/src
Applying patch '/home/keith/.rvm/patches/readline-6.2/patch-shobj-conf.diff'...
Prepare readline in /home/keith/.rvm/src/readline-6.2.
ERROR: Error running 'autoreconf -is --force', please read /home/keith/.rvm/log/readline/autoreconf.log
Configuring readline in /home/keith/.rvm/src/readline-6.2.
Compiling readline in /home/keith/.rvm/src/readline-6.2.
Installing readline to /home/keith/.rvm/usr

$ sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'libxslt1-dev' instead of 'libxslt-dev'
Note, selecting 'libncurses5-dev' instead of 'ncurses-dev'
autoconf is already the newest version.
automake is already the newest version.
bison is already the newest version.
build-essential is already the newest version.
curl is already the newest version.
git-core is already the newest version.
libc6-dev is already the newest version.
libncurses5-dev is already the newest version.
libreadline6 is already the newest version.
libreadline6-dev is already the newest version.
libreadline6-dev set to manually installed.
libsqlite3-0 is already the newest version.
libsqlite3-dev is already the newest version.
libssl-dev is already the newest version.
libtool is already the newest version.
libxml2-dev is already the newest version.
libxslt1-dev is already the newest version.
libyaml-dev is already the newest version.
openssl is already the newest version.
sqlite3 is already the newest version.
subversion is already the newest version.
zlib1g is already the newest version.
zlib1g-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

$ cd ~/.rvm/src/ruby-1.8.7-p352/ext/readline/

$ ruby extconf.rb --with-readline-dir=/usr
checking for tgetnum() in -lncurses... yes
checking for readline/readline.h... yes
checking for readline/history.h... yes
checking for readline() in -lreadline... yes
checking for rl_filename_completion_function()... yes
checking for rl_username_completion_function()... yes
checking for rl_completion_matches()... yes
checking for rl_deprep_term_function in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completion_append_character in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_basic_word_break_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completer_word_break_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_basic_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_completer_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_filename_quote_characters in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_attempted_completion_over in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_library_version in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_event_hook in stdio.h,readline/readline.h,readline/history.h... yes
checking for rl_cleanup_after_signal()... yes
checking for rl_clear_signals()... yes
checking for rl_vi_editing_mode()... yes
checking for rl_emacs_editing_mode()... yes
checking for replace_history_entry()... yes
checking for remove_history()... yes
creating Makefile

$ make
gcc -I. -I. -I/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/i686-linux -I. -DHAVE_READLINE_READLINE_H -DHAVE_READLINE_HISTORY_H -DHAVE_RL_FILENAME_COMPLETION_FUNCTION -DHAVE_RL_USERNAME_COMPLETION_FUNCTION -DHAVE_RL_COMPLETION_MATCHES -DHAVE_RL_DEPREP_TERM_FUNCTION -DHAVE_RL_COMPLETION_APPEND_CHARACTER -DHAVE_RL_BASIC_WORD_BREAK_CHARACTERS -DHAVE_RL_COMPLETER_WORD_BREAK_CHARACTERS -DHAVE_RL_BASIC_QUOTE_CHARACTERS -DHAVE_RL_COMPLETER_QUOTE_CHARACTERS -DHAVE_RL_FILENAME_QUOTE_CHARACTERS -DHAVE_RL_ATTEMPTED_COMPLETION_OVER -DHAVE_RL_LIBRARY_VERSION -DHAVE_RL_EVENT_HOOK -DHAVE_RL_CLEANUP_AFTER_SIGNAL -DHAVE_RL_CLEAR_SIGNALS -DHAVE_RL_VI_EDITING_MODE -DHAVE_RL_EMACS_EDITING_MODE -DHAVE_REPLACE_HISTORY_ENTRY -DHAVE_REMOVE_HISTORY -I/usr/include  -D_FILE_OFFSET_BITS=64  -fPIC -g -O2  -fPIC   -c readline.c
gcc -shared -o readline.so readline.o -L. -L/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -Wl,-R/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -L/usr/lib -Wl,-R/usr/lib -L.  -rdynamic -Wl,-export-dynamic    -Wl,-R -Wl,/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -L/home/keith/.rvm/rubies/ruby-1.8.7-p352/lib -lruby -lreadline -lncurses  -lrt -ldl -lcrypt -lm   -lc

$ make install
/usr/bin/install -c -m 0755 readline.so /home/keith/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/i686-linux

$ irb
ruby-1.8.7-p352 :001 > p 1
1
 => nil 
ruby-1.8.7-p352 :002 > $   

$ rvm remove 1.8.7
Removing /home/keith/.rvm/src/ruby-1.8.7-p352...
Removing /home/keith/.rvm/rubies/ruby-1.8.7-p352...
Removing ruby-1.8.7-p352 aliases...
Removing ruby-1.8.7-p352 wrappers...
Removing ruby-1.8.7-p352 environments...
Removing ruby-1.8.7-p352 binaries...

$ rvm install 1.8.7 --with-readline-dir=/usr
Installing Ruby from source to: /home/keith/.rvm/rubies/ruby-1.8.7-p352, this may take a while depending on your cpu(s)...

ruby-1.8.7-p352 - #fetching 
ruby-1.8.7-p352 - #extracting ruby-1.8.7-p352 to /home/keith/.rvm/src/ruby-1.8.7-p352
ruby-1.8.7-p352 - #extracted to /home/keith/.rvm/src/ruby-1.8.7-p352
Applying patch 'stdout-rouge-fix' (located at /home/keith/.rvm/patches/ruby/1.8.7/stdout-rouge-fix.patch)
ruby-1.8.7-p352 - #configuring 
ruby-1.8.7-p352 - #compiling 
ruby-1.8.7-p352 - #installing 
Removing old Rubygems files...
Installing rubygems-1.8.10 for ruby-1.8.7-p352 ...
Installation of rubygems completed successfully.
ruby-1.8.7-p352 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.8.7-p352 - #importing default gemsets (/home/keith/.rvm/gemsets/)
Install of ruby-1.8.7-p352 - #complete 

$ irb
1.8.7 :001 > p "hello world"
"hello world"
 => nil 
1.8.7 :002 > ^[[A^[[A^[[A^[[A^[[A

So in conclusion, I would be exceptionally grateful if some bright spark could suggest how I can debug this situation and resolve.

ps - 是的我有"谷歌"这个问题要死了....

Answer 1

Ubuntu 12.04在这里:这里的答案有所帮助,但也有误导性.

如果您正在使用Ubuntu 12.04,请不要使用或不使用--skip-autoreconf来安装readline.完成后,无论你给rvm install 1.9.3提供什么样的开关组合,readline或zlib都会被破坏.

要使它工作,请执行apt-get install,rvm requirements告诉您要执行,执行a pkg uninstall readline然后执行简单操作rvm remove 1.9.3; rvm install 1.9.3

Answer 2

我在使用Ubuntu 11.10时遇到了同样的问题.

在我的情况下,如果我使用以下内容,readline似乎可以正确编译:

$ rvm --skip-autoreconf pkg install readline

如http://beginrescueend.com/packages/readline/底部所述

但是,当我调用irb时,我会得到正常错误"Unable to required readline"

最后,根据Shane的命令行,我调用了以下内容:

$ rvm install 1.9.3 --with-readline-dir=$rvm_usr_path --with-iconv-dir=$rvm_usr_path --with-zlib-dir=$rvm_usr_path --with-openssl-dir=$rvm_usr_path

而不是http://beginrescueend.com/packages/readline/上提到的命令

$ rvm install 1.9.2 --with-readline-dir=$rvm_path/usr

在我的情况下,版本1.9.3是我想要的.而最后 IRB想出了一个正常运作的readline.

感谢大家在这里指出我正确的方向.

Answer 3

好的,所以这看起来很明显,当你知道答案的时候总是如此:

我放弃了使用RVM,并切换到rbenv - 我很高兴我做到了!

sudo apt-get install libreadline-gplv2-dev
CONFIGURE_OPTS="--with-readline-dir=/usr/include/readline --with-openssl-dir=/usr/local" rbenv-install 1.9.2-p290

这安装没有错误 - 我仍然不相信我需要gplv2包,因为我已经安装了libreadline6-dev.然而,STILL并没有解决我的问题.它确实从等式中删除了RVM,并告诉我,尽管我尽了最大的努力,IRB shell拒绝使用readline.

答案来自阅读这篇伟大的指南:

RubyTools.pdf

在我的〜/ .irbrc文件中,我发现:

IRB.conf[:USE_READLINE] = false

快速更新:

IRB.conf[:USE_READLINE] = true

我正在烹饪燃气!

感谢所有伟大的答案和建议,我非常感谢您的时间.

Answer 4

这解决了我使用Ruby 1.9.3进行rvm的问题

gem install rb-readline