resolve conflict in diagnostic.rb

1 files changed, 18 insertions, 4 deletions

diff --git a/Library/Homebrew/cmd/--env.rb b/Library/Homebrew/cmd/--env.rb
index 281175c93..292bcf866 100644
--- a/Library/Homebrew/cmd/--env.rb
+++ b/Library/Homebrew/cmd/--env.rb
@@ -3,6 +3,7 @@
 
 require "extend/ENV"
 require "build_environment"
+require "utils/shell"
 
 module Homebrew
   def __env
@@ -11,12 +12,25 @@ module Homebrew
     ENV.setup_build_environment
     ENV.universal_binary if ARGV.build_universal?
 
-    if $stdout.tty?
+    shell_value = ARGV.value("shell")
+    has_plain = ARGV.include?("--plain")
+
+    if has_plain
+      shell = nil
+    elsif shell_value.nil?
+      # legacy behavior
+      shell = :bash unless $stdout.tty?
+    elsif shell_value == "auto"
+      shell = Utils::Shell.parent_shell || Utils::Shell.preferred_shell
+    elsif shell_value
+      shell = Utils::Shell.path_to_shell(shell_value)
+    end
+
+    env_keys = build_env_keys(ENV)
+    if shell.nil?
       dump_build_env ENV
     else
-      build_env_keys(ENV).each do |key|
-        puts "export #{key}=\"#{ENV[key]}\""
-      end
+      env_keys.each { |key| puts Utils::Shell.export_value(shell, key, ENV[key]) }
     end
   end
 end