IRB output format in YAML

ruby-talk
1

I there a way to configure IRB so that it always display the result of a
IRB command in YAML or PP format.

Example:

In YAML:

irb(main):011:0> ENV.keys

···

---
- ALLUSERSPROFILE
- APPDATA
- APR_ICONV_PATH
- ATI_PATH
- BERK_PATH
- CLASSPATH
- CLIENTNAME

Pretty print:

irb(main):015:0> ENV.key
["ALLUSERSPROFILE",
"APPDATA",
"APR_ICONV_PATH",
"THG_ICON_PATH",
"WINDOWS_PATH"]
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2

Martin Martinos wrote:

I there a way to configure IRB so that it always display the result of a
IRB command in YAML or PP format.

Put this in your .irbrc and play around a little:

require 'yaml'

class IRB::Irb
   def output_value
     if @context.inspect?
       printf @context.return_format, @context.last_value.to_yaml
     else
       printf @context.return_format, @context.last_value
     end
   end
end

···

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

3

Thanks Joel, it works perfectly.

Martinos

···

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