[Exec] Only set process title on Ruby 2.1+pr/4589

The Process method is not available before then

2 files changed, 11 insertions, 10 deletions

diff --git a/lib/bundler/cli/exec.rb b/lib/bundler/cli/exec.rb
index b02a610c21..8240fc2342 100644
--- a/lib/bundler/cli/exec.rb
+++ b/lib/bundler/cli/exec.rb
@@ -63,7 +63,7 @@ module Bundler
       args.pop if args.last.is_a?(Hash)
       ARGV.replace(args)
       $0 = file
-      Process.setproctitle(process_title(file, *args))
+      Process.setproctitle(process_title(file, args)) if Process.respond_to?(:setproctitle)
       ui = Bundler.ui
       Bundler.ui = nil
       require "bundler/setup"
@@ -79,12 +79,8 @@ module Bundler
       abort "#{e.class}: #{e.message}\n  #{backtrace.join("\n  ")}"
     end
 
-    def process_title(file, *args)
-      if args.empty?
-        file
-      else
-        "#{file} #{args.join(" ")}".strip
-      end
+    def process_title(file, args)
+      "#{file} #{args.join(" ")}".strip
     end
 
     def ruby_shebang?(file)
diff --git a/spec/commands/exec_spec.rb b/spec/commands/exec_spec.rb
index e2283d7aa4..8163fc7725 100644
--- a/spec/commands/exec_spec.rb
+++ b/spec/commands/exec_spec.rb
@@ -462,7 +462,8 @@ describe "bundle exec" do
       puts "EXEC: \#{caller.grep(/load/).empty? ? 'exec' : 'load'}"
       puts "ARGS: \#{$0} \#{ARGV.join(' ')}"
       puts "RACK: \#{RACK}"
-      puts "PROCESS: \#{`ps --no-headers -oargs -p\#{Process.pid}`.strip}"
+      process_title = `ps -o args -p \#{Process.pid}`.split("\n", 2).last.strip
+      puts "PROCESS: \#{process_title}"
     RUBY
 
     before do
@@ -477,7 +478,11 @@ describe "bundle exec" do
     let(:exec) { "EXEC: load" }
     let(:args) { "ARGS: #{path} arg1 arg2" }
     let(:rack) { "RACK: 1.0.0" }
-    let(:process) { "PROCESS: #{path} arg1 arg2" }
+    let(:process) do
+      title = "PROCESS: #{path}"
+      title += " arg1 arg2" if RUBY_VERSION >= "2.1"
+      title
+    end
     let(:exit_code) { 0 }
     let(:expected) { [exec, args, rack, process].join("\n") }
     let(:expected_err) { "" }
@@ -513,7 +518,7 @@ describe "bundle exec" do
       let(:exit_code) { 1 }
       let(:expected) { super() << "\nbundler: failed to load command: #{path} (#{path})" }
       let(:expected_err) do
-        "RuntimeError: ERROR\n  #{path}:8" +
+        "RuntimeError: ERROR\n  #{path}:10" +
           (Bundler.current_ruby.ruby_18? ? "" : ":in `<top (required)>'")
       end
       it_behaves_like "it runs"