Allow env RELINE_STDERR_TTY to be used in yamatanooroti test

ruby · Dec 31, 2020 · 9ec0304 · 9ec0304
1 parent 7d58da4
commit 9ec0304
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/bin/multiline_repl b/bin/multiline_repl
@@ -4,6 +4,12 @@ require 'reline'
 require 'optparse'
 require_relative 'termination_checker'
 
+if ENV['RELINE_STDERR_TTY']
+  $stderr.reopen(ENV['RELINE_STDERR_TTY'], 'w')
+  $stderr.sync = true
+  $stderr.puts "Reline is used by #{Process.pid}"
+end
+
 opt = OptionParser.new
 opt.on('--prompt-list-cache-timeout VAL') { |v|
   Reline::LineEditor.__send__(:remove_const, :PROMPT_LIST_CACHE_TIMEOUT)