[Fix #1310] Fix a false positive for RSpec/Capybara/SpecificMatcher

Fix: #1310

Updated to not offense in the case of non-replaceable css selectors.

```ruby
expect(page).to have_css('button body')
expect(page).to have_css('a,h1')
expect(page).to have_css('table>tr')
expect(page).to have_css('select+option')
```

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Master (Unreleased)
 
+* Fix a false positive for `RSpec/Capybara/SpecificMatcher`. ([@ydah][])
+
 ## 2.12.0 (2022-07-02)
 
 * Fix incorrect path suggested by `RSpec/FilePath` cop when second argument contains spaces. ([@tejasbubane][])

lib/rubocop/cop/rspec/capybara/specific_matcher.rb

@@ -56,7 +56,7 @@ def specific_matcher(arg)
           end
 
           def acceptable_pattern?(arg)
-            arg.match?(/\[.+=\w+\]/)
+            arg.match?(/\[.+=\w+\]/) || arg.match?(/[ >,+]/)
           end
 
           def message(node, matcher)

spec/rubocop/cop/rspec/capybara/specific_matcher_spec.rb

@@ -77,6 +77,16 @@
     RUBY
   end
 
+  it 'does not register an offense for abstract matcher when ' \
+  'first argument is element with sub matcher' do
+    expect_no_offenses(<<-RUBY)
+      expect(page).to have_css('button body')
+      expect(page).to have_css('a,h1')
+      expect(page).to have_css('table>tr')
+      expect(page).to have_css('select+option')
+    RUBY
+  end
+
   it 'does not register an offense for abstract matcher when ' \
     'first argument is dstr' do
     expect_no_offenses(<<-'RUBY')