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comp.lang.ruby

upper arrow key is not worked in irb. is it bug?

Pokkai Dokkai

12/24/2007 6:16:00 PM


i manually download ruby-1.8.6.tar.gz

i installed into /home/username/package/ruby (using --prefix)
and add the manual path into PATH variable

when i was working in irb

if i press upper arrow key then '^[[A' will come .after that if i press
enter then my irb will quit.


username@ubuntu7.04:~$ which irb
/home/username/package/ruby/bin/irb
username@ubuntu7.04:~$ irb
irb(main):001:0> 5
=> 5
irb(main):002:0> ^[[A ----->here i pressed upper arrow key
username@subuntu7.04:~$




is it bug ? or is there any solution for this ?
(because i want to work in irb for long time)
--
Posted via http://www.ruby-....
6 Answers

Joel VanderWerf

12/24/2007 6:37:00 PM

0

Pokkai Dokkai wrote:
> i manually download ruby-1.8.6.tar.gz
>
> i installed into /home/username/package/ruby (using --prefix)
> and add the manual path into PATH variable
>
> when i was working in irb
>
> if i press upper arrow key then '^[[A' will come .after that if i press
> enter then my irb will quit.

Do you have the readline and readline-devel packages installed? If you
install them (whether using your OS's package manager or building from
source), then when you build ruby it will recognize them and irb will
use readline, which should give you the desired up-arrow behavior.

On my Ubuntu system these packages are called libreadline5 and
libreadline5-dev.

You can check in your ruby-1.8.6/ext/readline whether the ruby wrapper
got built or not. Just run 'ruby extconf.rb' there and see if some
checks fail.

After installing the readline packages, these checks should succeed. In
that case, do 'make && make install' in the same dir and irb should work
right.

--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

Pokkai Dokkai

12/24/2007 8:08:00 PM

0

Joel VanderWerf wrote:

> Do you have the readline and readline-devel packages installed? If you
> install them (whether using your OS's package manager or building from
> source), then when you build ruby it will recognize them and irb will
> use readline, which should give you the desired up-arrow behavior.
>
> On my Ubuntu system these packages are called libreadline5 and
> libreadline5-dev.
>
> You can check in your ruby-1.8.6/ext/readline whether the ruby wrapper
> got built or not. Just run 'ruby extconf.rb' there and see if some
> checks fail.
>
> After installing the readline packages, these checks should succeed. In
> that case, do 'make && make install' in the same dir and irb should work
> right.

thank you Joel VanderWerf ..now irb working well .but

I am going to use ri ,it tell to "make install-doc"

when i type "make install-doc" at finally
below errors are raised


mmmmc................................c....c..c...
zlib.c:
mcccccccccccccccccc...................................................................................
Generating RI...
/home/username/package/ruby-1.8.6-p111/lib/yaml.rb:9:in `require': no
such file to load -- stringio (LoadError)
from /home/username/package/ruby-1.8.6-p111/lib/yaml.rb:9
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/ri/ri_descriptions.rb:1:in
`require'
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/ri/ri_descriptions.rb:1
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/ri/ri_reader.rb:1:in
`require'
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/ri/ri_reader.rb:1
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/generators/ri_generator.rb:46:in
`require'
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/generators/ri_generator.rb:46
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/rdoc.rb:273:in `require'
from
/home/username/package/ruby-1.8.6-p111/lib/rdoc/rdoc.rb:273:in
`document'
from ./bin/rdoc:63
make: *** [rdoc] Error 1
username@supermail:~/package/ruby-1.8.6-p111$







thank you


--
Posted via http://www.ruby-....

Pokkai Dokkai

12/24/2007 8:10:00 PM

0

i tried to install 'stringio' and some related package
(by synaptic package manager in ubuntu7.04) .

but can't get corresponding package to solve above error.
--
Posted via http://www.ruby-....

Pokkai Dokkai

12/24/2007 8:18:00 PM

0

actually when i install

i opened "ext/Setup" file and changed from
#option nodynamic
to
option nodynamic

at first line ....
so i got this error .
--
Posted via http://www.ruby-....

Ryan Davis

12/24/2007 8:26:00 PM

0


On Dec 24, 2007, at 12:10 , Pokkai Dokkai wrote:

> i tried to install 'stringio' and some related package
> (by synaptic package manager in ubuntu7.04) .
>
> but can't get corresponding package to solve above error.

this is _precisely_ why I won't use ubuntu for ruby development.

what an f'in PITA.

Joel VanderWerf

12/24/2007 8:42:00 PM

0

Ryan Davis wrote:
>
> On Dec 24, 2007, at 12:10 , Pokkai Dokkai wrote:
>
>> i tried to install 'stringio' and some related package
>> (by synaptic package manager in ubuntu7.04) .
>>
>> but can't get corresponding package to solve above error.
>
> this is _precisely_ why I won't use ubuntu for ruby development.
>
> what an f'in PITA.

There's no need to reference unspeakable acts with middle-eastern
flatbreads, or any baked good.

A simple rule for happiness: build ruby from source, and let it go in
/usr/local (or anywhere but /usr). For the developer, that has the
advantage, on any OS, of (a) letting you tinker with the interpreter and
(b) building with architecture-specific optimizations.

Use apt-get (or whatever) to get the few dependencies that are not
commonly installed (such as readline), or build them yourself.

--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407