https://git.ruby-lang.org/ruby.git/commit/?id=0ae5cd55e5

From 0ae5cd55e5c764c8fb14c63eb663cdbff355434e Mon Sep 17 00:00:00 2001
From: Carsten Wirth <carsten.wirth@h...>
Date: Tue, 26 Nov 2019 15:48:55 +0100
Subject: [rubygems/rubygems] Remove multiline gem specifications correctly

https://github.com/rubygems/rubygems/commit/8dca0ad56e

diff --git a/lib/bundler/injector.rb b/lib/bundler/injector.rb
index 767c5ff..6694642 100644
--- a/lib/bundler/injector.rb
+++ b/lib/bundler/injector.rb
@@ -180,8 +180,19 @@ module Bundler https://github.com/ruby/ruby/blob/trunk/lib/bundler/injector.rb#L180
     def remove_gems_from_gemfile(gems, gemfile_path)
       patterns = /gem\s+(['"])#{Regexp.union(gems)}\1|gem\s*\((['"])#{Regexp.union(gems)}\2\)/
 
-      # remove lines which match the regex
-      new_gemfile = IO.readlines(gemfile_path).reject {|line| line.match(patterns) }
+      new_gemfile = []
+      multiline_removal = false
+      IO.readlines(gemfile_path).each do |line|
+        if line.match(patterns)
+          multiline_removal = line.rstrip.end_with?(",")
+          # skip lines which match the regex
+          next
+        end
+
+        # skip followup lines until line does not end with ','
+        new_gemfile << line unless multiline_removal
+        multiline_removal = line.rstrip.end_with?(",") if multiline_removal
+      end
 
       # remove line \n and append them with other strings
       new_gemfile.each_with_index do |_line, index|
diff --git a/spec/bundler/commands/remove_spec.rb b/spec/bundler/commands/remove_spec.rb
index ef31392..3b255cd 100644
--- a/spec/bundler/commands/remove_spec.rb
+++ b/spec/bundler/commands/remove_spec.rb
@@ -44,6 +44,30 @@ RSpec.describe "bundle remove" do https://github.com/ruby/ruby/blob/trunk/spec/bundler/commands/remove_spec.rb#L44
           source "#{file_uri_for(gem_repo1)}"
         G
       end
+
+      context "when gem is specified in multiple lines" do
+        it "shows success for removed gem" do
+          gemfile <<-G
+            source '#{file_uri_for(gem_repo1)}'
+
+            gem 'git'
+            gem 'rack',
+                git: 'https://github.com/rack/rack',
+                branch: 'master'
+            gem 'nokogiri'
+          G
+
+          bundle! "remove rack"
+
+          expect(out).to include("rack was removed.")
+          gemfile_should_be <<-G
+            source '#{file_uri_for(gem_repo1)}'
+
+            gem 'git'
+            gem 'nokogiri'
+          G
+        end
+      end
     end
 
     context "when gem is not present in gemfile" do
-- 
cgit v0.10.2


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