print old config value in parseable format using overwriting an existing

value

2 files changed, 15 insertions, 1 deletions

diff --git a/lib/bundler/cli/config.rb b/lib/bundler/cli/config.rb
index 70eeac4015..8ad7f12fac 100644
--- a/lib/bundler/cli/config.rb
+++ b/lib/bundler/cli/config.rb
@@ -79,7 +79,10 @@ module Bundler
 
     def message
       locations = Bundler.settings.locations(name)
-      if scope == "global"
+      if @options[:parseable]
+        value = locations[:local] || locations[:env] || locations[:global]
+        "#{name}=#{value}" if value
+      elsif scope == "global"
         if locations[:local]
           "Your application has set #{name} to #{locations[:local].inspect}. " \
             "This will override the global value you are currently setting"
diff --git a/spec/commands/config_spec.rb b/spec/commands/config_spec.rb
index 4ce323c3a9..030a85ff62 100644
--- a/spec/commands/config_spec.rb
+++ b/spec/commands/config_spec.rb
@@ -142,6 +142,16 @@ RSpec.describe ".bundle/config" do
       run "puts Bundler.settings['foo']"
       expect(out).to eq("value")
     end
+
+    context "when replacing a current value with the parseable flag" do
+      before { bundle "config --global foo value" }
+      it "prints the current value in a parseable format" do
+        bundle "config --global --parseable foo value2"
+        expect(out).to eq "foo=value"
+        run "puts Bundler.settings['foo']"
+        expect(out).to eq("value2")
+      end
+    end
   end
 
   describe "local" do
@@ -191,6 +201,7 @@ RSpec.describe ".bundle/config" do
     it "can be deleted with parseable option" do
       bundle "config --local foo value"
       bundle "config --delete --parseable foo"
+      expect(out).to eq ""
       run "puts Bundler.settings['foo'] == nil"
       expect(out).to eq("true")
     end