[ruby/irb] Page evaluation result's output

(https://github.com/ruby/irb/pull/784)

* Page evaluation result's output

This will make it easier to work with long output that exceeds the terminal's height.

* Use consistent TERM in rendering tests

This makes sure we get consistent result on all platforms.

https://github.com/ruby/irb/commit/4fedce93d3

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/irb.rb b/lib/irb.rb
index 66149eb455..1ba335c087 100644
--- a/lib/irb.rb
+++ b/lib/irb.rb
@@ -20,6 +20,7 @@ require_relative "irb/color"
 require_relative "irb/version"
 require_relative "irb/easter-egg"
 require_relative "irb/debug"
+require_relative "irb/pager"
 
 # IRB stands for "interactive Ruby" and is a tool to interactively execute Ruby
 # expressions read from the standard input.
@@ -859,11 +860,12 @@ module IRB
           end
         end
       end
+
       if multiline_p && @context.newline_before_multiline_output?
-        printf @context.return_format, "\n#{str}"
-      else
-        printf @context.return_format, str
+        str = "\n" + str
       end
+
+      Pager.page_content(format(@context.return_format, str), retain_content: true)
     end
 
     # Outputs the local variables to this current session, including