Use square brackets for %w and %i array literals

README.md

@@ -164,7 +164,7 @@ Generate new file by running `ameba --gen-config`.
 **List of sources to run Ameba on can be configured globally via:**
 
 - `Globs` section - an array of wildcards (or paths) to include to the
-  inspection. Defaults to `%w(**/*.cr !lib)`, meaning it includes all project
+  inspection. Defaults to `%w[**/*.cr !lib]`, meaning it includes all project
   files with `*.cr` extension except those which exist in `lib` folder.
 - `Excluded` section - an array of wildcards (or paths) to exclude from the
   source list defined by `Globs`. Defaults to an empty array.

spec/ameba/base_spec.cr

@@ -10,7 +10,7 @@ module Ameba::Rule
       end
 
       it "contains rules across all the available groups" do
-        Rule.rules.map(&.group_name).uniq!.reject!(&.empty?).sort.should eq %w(
+        Rule.rules.map(&.group_name).uniq!.reject!(&.empty?).sort.should eq %w[
           Ameba
           Documentation
           Layout
@@ -19,7 +19,7 @@ module Ameba::Rule
           Naming
           Performance
           Style
-        )
+        ]
       end
     end
 
@@ -50,25 +50,25 @@ module Ameba::Rule
 
       it "returns false if source is not excluded from this rule" do
         rule = DummyRule.new
-        rule.excluded = %w(some_source.cr)
+        rule.excluded = %w[some_source.cr]
         rule.excluded?(Source.new "", "another_source.cr").should_not be_true
       end
 
       it "returns true if source is excluded from this rule" do
         rule = DummyRule.new
-        rule.excluded = %w(source.cr)
+        rule.excluded = %w[source.cr]
         rule.excluded?(Source.new "", "source.cr").should be_true
       end
 
       it "returns true if source matches the wildcard" do
         rule = DummyRule.new
-        rule.excluded = %w(**/*.cr)
+        rule.excluded = %w[**/*.cr]
         rule.excluded?(Source.new "", __FILE__).should be_true
       end
 
       it "returns false if source does not match the wildcard" do
         rule = DummyRule.new
-        rule.excluded = %w(*_spec.cr)
+        rule.excluded = %w[*_spec.cr]
         rule.excluded?(Source.new "", "source.cr").should be_false
       end
     end

spec/ameba/cli/cmd_spec.cr

@@ -5,27 +5,27 @@ module Ameba::Cli
   describe "Cmd" do
     describe ".run" do
       it "runs ameba" do
-        r = Cli.run %w(-f silent -c spec/fixtures/config.yml spec/fixtures/source.cr)
+        r = Cli.run %w[-f silent -c spec/fixtures/config.yml spec/fixtures/source.cr]
         r.should be_nil
       end
     end
 
     describe ".parse_args" do
-      %w(-s --silent).each do |flag|
+      %w[-s --silent].each do |flag|
         it "accepts #{flag} flag" do
           c = Cli.parse_args [flag]
           c.formatter.should eq :silent
         end
       end
 
-      %w(-c --config).each do |flag|
+      %w[-c --config].each do |flag|
         it "accepts #{flag} flag" do
           c = Cli.parse_args [flag, "config.yml"]
           c.config.should eq Path["config.yml"]
         end
       end
 
-      %w(-f --format).each do |flag|
+      %w[-f --format].each do |flag|
         it "accepts #{flag} flag" do
           c = Cli.parse_args [flag, "my-formatter"]
           c.formatter.should eq "my-formatter"
@@ -34,68 +34,68 @@ module Ameba::Cli
 
       it "accepts --only flag" do
         c = Cli.parse_args ["--only", "RULE1,RULE2"]
-        c.only.should eq %w(RULE1 RULE2)
+        c.only.should eq %w[RULE1 RULE2]
       end
 
       it "accepts --except flag" do
         c = Cli.parse_args ["--except", "RULE1,RULE2"]
-        c.except.should eq %w(RULE1 RULE2)
+        c.except.should eq %w[RULE1 RULE2]
       end
 
       it "defaults rules? flag to false" do
-        c = Cli.parse_args %w(spec/fixtures/source.cr)
+        c = Cli.parse_args %w[spec/fixtures/source.cr]
         c.rules?.should be_false
       end
 
       it "defaults skip_reading_config? flag to false" do
-        c = Cli.parse_args %w(spec/fixtures/source.cr)
+        c = Cli.parse_args %w[spec/fixtures/source.cr]
         c.skip_reading_config?.should be_false
       end
 
       it "accepts --rules flag" do
-        c = Cli.parse_args %w(--rules)
+        c = Cli.parse_args %w[--rules]
         c.rules?.should eq true
       end
 
       it "defaults all? flag to false" do
-        c = Cli.parse_args %w(spec/fixtures/source.cr)
+        c = Cli.parse_args %w[spec/fixtures/source.cr]
         c.all?.should be_false
       end
 
       it "accepts --all flag" do
-        c = Cli.parse_args %w(--all)
+        c = Cli.parse_args %w[--all]
         c.all?.should eq true
       end
 
       it "accepts --gen-config flag" do
-        c = Cli.parse_args %w(--gen-config)
+        c = Cli.parse_args %w[--gen-config]
         c.formatter.should eq :todo
       end
 
       it "accepts --no-color flag" do
-        c = Cli.parse_args %w(--no-color)
+        c = Cli.parse_args %w[--no-color]
         c.colors?.should be_false
       end
 
       it "accepts --without-affected-code flag" do
-        c = Cli.parse_args %w(--without-affected-code)
+        c = Cli.parse_args %w[--without-affected-code]
         c.without_affected_code?.should be_true
       end
 
       it "doesn't disable colors by default" do
-        c = Cli.parse_args %w(--all)
+        c = Cli.parse_args %w[--all]
         c.colors?.should be_true
       end
 
       it "ignores --config if --gen-config flag passed" do
-        c = Cli.parse_args %w(--gen-config --config my_config.yml)
+        c = Cli.parse_args %w[--gen-config --config my_config.yml]
         c.formatter.should eq :todo
         c.skip_reading_config?.should be_true
       end
 
       describe "-e/--explain" do
         it "configures file/line/column" do
-          c = Cli.parse_args %w(--explain spec/fixtures/source.cr:3:5)
+          c = Cli.parse_args %w[--explain spec/fixtures/source.cr:3:5]
 
           location_to_explain = c.location_to_explain.should_not be_nil
           location_to_explain[:file].should eq "spec/fixtures/source.cr"
@@ -105,59 +105,59 @@ module Ameba::Cli
 
         it "raises an error if location is not valid" do
           expect_raises(Exception, "location should have PATH:line:column") do
-            Cli.parse_args %w(--explain spec/fixtures/source.cr:3)
+            Cli.parse_args %w[--explain spec/fixtures/source.cr:3]
           end
         end
 
         it "raises an error if line number is not valid" do
           expect_raises(Exception, "location should have PATH:line:column") do
-            Cli.parse_args %w(--explain spec/fixtures/source.cr:a:3)
+            Cli.parse_args %w[--explain spec/fixtures/source.cr:a:3]
           end
         end
 
         it "raises an error if column number is not valid" do
           expect_raises(Exception, "location should have PATH:line:column") do
-            Cli.parse_args %w(--explain spec/fixtures/source.cr:3:&)
+            Cli.parse_args %w[--explain spec/fixtures/source.cr:3:&]
           end
         end
 
         it "raises an error if line/column are missing" do
           expect_raises(Exception, "location should have PATH:line:column") do
-            Cli.parse_args %w(--explain spec/fixtures/source.cr)
+            Cli.parse_args %w[--explain spec/fixtures/source.cr]
           end
         end
       end
 
       context "--fail-level" do
         it "configures fail level Convention" do
-          c = Cli.parse_args %w(--fail-level convention)
+          c = Cli.parse_args %w[--fail-level convention]
           c.fail_level.should eq Severity::Convention
         end
 
         it "configures fail level Warning" do
-          c = Cli.parse_args %w(--fail-level Warning)
+          c = Cli.parse_args %w[--fail-level Warning]
           c.fail_level.should eq Severity::Warning
         end
 
         it "configures fail level Error" do
-          c = Cli.parse_args %w(--fail-level error)
+          c = Cli.parse_args %w[--fail-level error]
           c.fail_level.should eq Severity::Error
         end
 
         it "raises if fail level is incorrect" do
           expect_raises(Exception, "Incorrect severity name JohnDoe") do
-            Cli.parse_args %w(--fail-level JohnDoe)
+            Cli.parse_args %w[--fail-level JohnDoe]
           end
         end
       end
 
       it "accepts unknown args as globs" do
-        c = Cli.parse_args %w(source1.cr source2.cr)
+        c = Cli.parse_args %w[source1.cr source2.cr]
-        c.globs.should eq %w(source1.cr source2.cr)
+        c.globs.should eq %w[source1.cr source2.cr]
       end
 
       it "accepts one unknown arg as explain location if it has correct format" do
-        c = Cli.parse_args %w(source.cr:3:22)
+        c = Cli.parse_args %w[source.cr:3:22]
 
         location_to_explain = c.location_to_explain.should_not be_nil
         location_to_explain[:file].should eq "source.cr"

spec/ameba/config_spec.cr

@@ -32,7 +32,7 @@ module Ameba
           Globs: src/*.cr
           CONFIG
         config = Config.new(yml)
-        config.globs.should eq %w(src/*.cr)
+        config.globs.should eq %w[src/*.cr]
       end
 
       it "initializes globs as array" do
@@ -43,7 +43,7 @@ module Ameba
            - "!spec"
           CONFIG
         config = Config.new(yml)
-        config.globs.should eq %w(src/*.cr !spec)
+        config.globs.should eq %w[src/*.cr !spec]
       end
 
       it "raises if Globs has a wrong type" do
@@ -62,7 +62,7 @@ module Ameba
           Excluded: spec
           CONFIG
         config = Config.new(yml)
-        config.excluded.should eq %w(spec)
+        config.excluded.should eq %w[spec]
       end
 
       it "initializes excluded as array" do
@@ -73,7 +73,7 @@ module Ameba
            - lib/*.cr
           CONFIG
         config = Config.new(yml)
-        config.excluded.should eq %w(spec lib/*.cr)
+        config.excluded.should eq %w[spec lib/*.cr]
       end
 
       it "raises if Excluded has a wrong type" do
@@ -145,12 +145,12 @@ module Ameba
       end
 
       it "returns a list of sources matching globs" do
-        config.globs = %w(**/config_spec.cr)
+        config.globs = %w[**/config_spec.cr]
         config.sources.size.should eq(1)
       end
 
       it "returns a list of sources excluding 'Excluded'" do
-        config.excluded = %w(**/config_spec.cr)
+        config.excluded = %w[**/config_spec.cr]
         config.sources.any?(&.fullpath.==(__FILE__)).should be_false
       end
     end
@@ -192,7 +192,7 @@ module Ameba
 
       it "updates excluded property" do
         name = DummyRule.rule_name
-        excluded = %w(spec/source.cr)
+        excluded = %w[spec/source.cr]
         config.update_rule name, excluded: excluded
         rule = config.rules.find!(&.name.== name)
         rule.excluded.should eq excluded
@@ -211,7 +211,7 @@ module Ameba
 
       it "updates multiple rules by excluded property" do
         name = DummyRule.rule_name
-        excluded = %w(spec/source.cr)
+        excluded = %w[spec/source.cr]
         config.update_rules [name], excluded: excluded
         rule = config.rules.find!(&.name.== name)
         rule.excluded.should eq excluded
@@ -226,7 +226,7 @@ module Ameba
 
       it "updates a group by excluded property" do
         name = DummyRule.group_name
-        excluded = %w(spec/source.cr)
+        excluded = %w[spec/source.cr]
         config.update_rules [name], excluded: excluded
         rule = config.rules.find!(&.name.== DummyRule.rule_name)
         rule.excluded.should eq excluded

spec/ameba/rule/lint/percent_arrays_spec.cr

@@ -6,41 +6,41 @@ module Ameba::Rule::Lint
 
     it "passes if percent arrays are written correctly" do
       s = Source.new %q(
-        %i(one two three)
+        %i[one two three]
-        %w(one two three)
+        %w[one two three]
 
-        %i(1 2 3)
+        %i[1 2 3]
-        %w(1 2 3)
+        %w[1 2 3]
 
-        %i()
+        %i[]
-        %w()
+        %w[]
       )
       subject.catch(s).should be_valid
     end
 
     it "fails if string percent array has commas" do
-      s = Source.new %( %w(one, two) )
+      s = Source.new %( %w[one, two] )
       subject.catch(s).should_not be_valid
     end
 
     it "fails if string percent array has quotes" do
-      s = Source.new %( %w("one" "two") )
+      s = Source.new %( %w["one" "two"] )
       subject.catch(s).should_not be_valid
     end
 
     it "fails if symbols percent array has commas" do
-      s = Source.new %( %i(one, two) )
+      s = Source.new %( %i[one, two] )
       subject.catch(s).should_not be_valid
     end
 
     it "fails if symbols percent array has a colon" do
-      s = Source.new %( %i(:one :two) )
+      s = Source.new %( %i[:one :two] )
       subject.catch(s).should_not be_valid
     end
 
     it "reports rule, location and message for %i" do
       s = Source.new %(
-        %i(:one)
+        %i[:one]
       ), "source.cr"
 
       subject.catch(s).should_not be_valid
@@ -54,7 +54,7 @@ module Ameba::Rule::Lint
 
     it "reports rule, location and message for %w" do
       s = Source.new %(
-        %w("one")
+        %w["one"]
       ), "source.cr"
 
       subject.catch(s).should_not be_valid
@@ -71,14 +71,14 @@ module Ameba::Rule::Lint
       it "#string_array_unwanted_symbols" do
         rule = PercentArrays.new
         rule.string_array_unwanted_symbols = ","
-        s = Source.new %( %w("one") )
+        s = Source.new %( %w["one"] )
         rule.catch(s).should be_valid
       end
 
       it "#symbol_array_unwanted_symbols" do
         rule = PercentArrays.new
         rule.symbol_array_unwanted_symbols = ","
-        s = Source.new %( %i(:one) )
+        s = Source.new %( %i[:one] )
         rule.catch(s).should be_valid
       end
     end

spec/ameba/rule/lint/useless_assign_spec.cr

@@ -977,7 +977,7 @@ module Ameba::Rule::Lint
         s = Source.new %(
           foo = 22
 
-          {% for x in %w(foo) %}
+          {% for x in %w[foo] %}
             add({{ x.id }})
           {% end %}
         )
@@ -988,7 +988,7 @@ module Ameba::Rule::Lint
         s = Source.new %(
           foo = 22
 
-          {% for x in %w(bar) %}
+          {% for x in %w[bar] %}
             puts {{ "foo".id }}
           {% end %}
         )

spec/ameba/rule/performance/any_after_filter_spec.cr

@@ -48,7 +48,7 @@ module Ameba::Rule::Performance
     context "properties" do
       it "#filter_names" do
         rule = AnyAfterFilter.new
-        rule.filter_names = %w(select)
+        rule.filter_names = %w[select]
 
         expect_no_issues rule, <<-CRYSTAL
           [1, 2, 3].reject { |e| e > 2 }.any?

spec/ameba/rule/performance/chained_call_with_no_bang_spec.cr

@@ -46,7 +46,7 @@ module Ameba::Rule::Performance
     context "properties" do
       it "#call_names" do
         rule = ChainedCallWithNoBang.new
-        rule.call_names = %w(uniq)
+        rule.call_names = %w[uniq]
 
         expect_no_issues rule, <<-CRYSTAL
           [1, 2, 3].select { |e| e > 2 }.reverse

spec/ameba/rule/performance/first_last_after_filter_spec.cr

@@ -64,7 +64,7 @@ module Ameba::Rule::Performance
     context "properties" do
       it "#filter_names" do
         rule = FirstLastAfterFilter.new
-        rule.filter_names = %w(reject)
+        rule.filter_names = %w[reject]
 
         expect_no_issues rule, <<-CRYSTAL
           [1, 2, 3].select { |e| e > 2 }.first

spec/ameba/rule/performance/size_after_filter_spec.cr

@@ -46,7 +46,7 @@ module Ameba::Rule::Performance
     context "properties" do
       it "#filter_names" do
         rule = SizeAfterFilter.new
-        rule.filter_names = %w(select)
+        rule.filter_names = %w[select]
 
         expect_no_issues rule, <<-CRYSTAL
           [1, 2, 3].reject(&.empty?).size

spec/ameba/rule/style/is_a_filter_spec.cr

@@ -44,7 +44,7 @@ module Ameba::Rule::Style
     context "properties" do
       it "#filter_names" do
         rule = IsAFilter.new
-        rule.filter_names = %w(select)
+        rule.filter_names = %w[select]
 
         expect_no_issues rule, <<-CRYSTAL
           [1, 2, nil].reject(&.nil?)

spec/ameba/rule/style/parentheses_around_condition_spec.cr

@@ -4,7 +4,7 @@ module Ameba::Rule::Style
   subject = ParenthesesAroundCondition.new
 
   describe ParenthesesAroundCondition do
-    {% for keyword in %w(if unless while until) %}
+    {% for keyword in %w[if unless while until] %}
       context "{{ keyword.id }}" do
         it "reports if redundant parentheses are found" do
           source = expect_issue subject, <<-CRYSTAL, keyword: {{ keyword }}

spec/ameba/tokenizer_spec.cr

@@ -22,11 +22,11 @@ module Ameba
         DELIMITER_START STRING INTERPOLATION_START NUMBER } DELIMITER_END EOF
       )
 
-      it_tokenizes %(%w(1 2)),
+      it_tokenizes %(%w[1 2]),
-        %w(STRING_ARRAY_START STRING STRING STRING_ARRAY_END EOF)
+        %w[STRING_ARRAY_START STRING STRING STRING_ARRAY_END EOF]
 
-      it_tokenizes %(%i(one two)),
+      it_tokenizes %(%i[one two]),
-        %w(SYMBOL_ARRAY_START STRING STRING STRING_ARRAY_END EOF)
+        %w[SYMBOL_ARRAY_START STRING STRING STRING_ARRAY_END EOF]
 
       it_tokenizes %(
         class A
@@ -34,11 +34,11 @@ module Ameba
             puts "hello"
           end
         end
-      ), %w(
+      ), %w[
         NEWLINE SPACE IDENT SPACE CONST NEWLINE SPACE IDENT SPACE IDENT
         NEWLINE SPACE IDENT SPACE DELIMITER_START STRING DELIMITER_END
         NEWLINE SPACE IDENT NEWLINE SPACE IDENT NEWLINE SPACE EOF
-      )
+      ]
     end
   end
 end

src/ameba/ast/visitors/counting_visitor.cr

@@ -24,7 +24,7 @@ module Ameba::AST
     # Uses the same logic than rubocop. See
     # https://github.com/rubocop-hq/rubocop/blob/master/lib/rubocop/cop/metrics/cyclomatic_complexity.rb#L21
     # Except "for", because crystal doesn't have a "for" loop.
-    {% for node in %i(if while until rescue or and) %}
+    {% for node in %i[if while until rescue or and] %}
       # :nodoc:
       def visit(node : Crystal::{{ node.id.capitalize }})
         @complexity += 1 unless macro_condition?

src/ameba/config.cr

@@ -200,13 +200,13 @@ class Ameba::Config
   #
   # ```
   # config = Ameba::Config.load
-  # config.update_rules %w(Rule1 Rule2), enabled: true
+  # config.update_rules %w[Rule1 Rule2], enabled: true
   # ```
   #
   # also it allows to update groups of rules:
   #
   # ```
-  # config.update_rules %w(Group1 Group2), enabled: true
+  # config.update_rules %w[Group1 Group2], enabled: true
   # ```
   def update_rules(names, enabled = true, excluded = nil)
     names.try &.each do |name|

src/ameba/rule/lint/comparison_to_boolean.cr

@@ -28,7 +28,7 @@ module Ameba::Rule::Lint
     end
 
     MSG      = "Comparison to a boolean is pointless"
-    OP_NAMES = %w(== != ===)
+    OP_NAMES = %w[== != ===]
 
     def test(source, node : Crystal::Call)
       return unless node.name.in?(OP_NAMES)

src/ameba/rule/lint/debug_calls.cr

@@ -18,7 +18,7 @@ module Ameba::Rule::Lint
   class DebugCalls < Base
     properties do
       description "Disallows debug-related calls"
-      method_names %w(p p! pp pp!)
+      method_names %w[p p! pp pp!]
     end
 
     MSG = "Possibly forgotten debug-related `%s` call detected"

src/ameba/rule/lint/literals_comparison.cr

@@ -23,7 +23,7 @@ module Ameba::Rule::Lint
       description "Identifies comparisons between literals"
     end
 
-    OP_NAMES = %w(=== == !=)
+    OP_NAMES = %w[=== == !=]
 
     MSG        = "Comparison always evaluates to %s"
     MSG_LIKELY = "Comparison most likely evaluates to %s"

src/ameba/rule/lint/not_nil_after_no_bang.cr

@@ -29,8 +29,8 @@ module Ameba::Rule::Lint
 
     MSG = "Use `%s! {...}` instead of `%s {...}.not_nil!`"
 
-    BLOCK_CALL_NAMES = %w(index rindex find)
+    BLOCK_CALL_NAMES = %w[index rindex find]
-    CALL_NAMES       = %w(index rindex match)
+    CALL_NAMES       = %w[index rindex match]
 
     def test(source)
       AST::NodeVisitor.new self, source, skip: :macro

src/ameba/rule/lint/percent_array.cr

@@ -4,15 +4,15 @@ module Ameba::Rule::Lint
   # For example, this is usually written by mistake:
   #
   # ```
-  # %i(:one, :two)
+  # %i[:one, :two]
-  # %w("one", "two")
+  # %w["one", "two"]
   # ```
   #
   # And the expected example is:
   #
   # ```
-  # %i(one two)
+  # %i[one two]
-  # %w(one two)
+  # %w[one two]
   # ```
   #
   # YAML configuration example:

src/ameba/rule/lint/spec_focus.cr

@@ -50,7 +50,8 @@ module Ameba::Rule::Lint
     end
 
     MSG = "Focused spec item detected"
-    SPEC_ITEM_NAMES = %w(describe context it pending)
+
+    SPEC_ITEM_NAMES = %w[describe context it pending]
 
     def test(source)
       return unless source.spec?

src/ameba/rule/performance/any_after_filter.cr

@@ -31,7 +31,7 @@ module Ameba::Rule::Performance
 
     properties do
       description "Identifies usage of `any?` calls that follow filters"
-      filter_names %w(select reject)
+      filter_names %w[select reject]
     end
 
     MSG = "Use `any? {...}` instead of `%s {...}.any?`"

src/ameba/rule/performance/chained_call_with_no_bang.cr

@@ -45,18 +45,18 @@ module Ameba::Rule::Performance
       # All of those have bang method variants returning `self`
       # and are not modifying the receiver type (like `compact` does),
       # thus are safe to switch to the bang variant.
-      call_names %w(uniq sort sort_by shuffle reverse)
+      call_names %w[uniq sort sort_by shuffle reverse]
     end
 
     MSG = "Use bang method variant `%s!` after chained `%s` call"
 
     # All these methods allocate a new object
-    ALLOCATING_METHOD_NAMES = %w(
+    ALLOCATING_METHOD_NAMES = %w[
       keys values values_at map map_with_index flat_map compact_map
       flatten compact select reject sample group_by chunks tally merge
       combinations repeated_combinations permutations repeated_permutations
       transpose invert chars captures named_captures clone
-    )
+    ]
 
     def test(source)
       AST::NodeVisitor.new self, source, skip: :macro

src/ameba/rule/performance/first_last_after_filter.cr

@@ -30,13 +30,14 @@ module Ameba::Rule::Performance
 
     properties do
       description "Identifies usage of `first/last/first?/last?` calls that follow filters"
-      filter_names %w(select)
+      filter_names %w[select]
     end
 
-    CALL_NAMES  = %w(first last first? last?)
     MSG         = "Use `find {...}` instead of `%s {...}.%s`"
     MSG_REVERSE = "Use `reverse_each.find {...}` instead of `%s {...}.%s`"
 
+    CALL_NAMES = %w[first last first? last?]
+
     def test(source)
       AST::NodeVisitor.new self, source, skip: :macro
     end

src/ameba/rule/performance/map_instead_of_block.cr

@@ -31,7 +31,7 @@ module Ameba::Rule::Performance
 
     MSG = "Use `%s {...}` instead of `map {...}.%s`"
 
-    CALL_NAMES = %w(sum product)
+    CALL_NAMES = %w[sum product]
 
     def test(source)
       AST::NodeVisitor.new self, source, skip: :macro

src/ameba/rule/performance/size_after_filter.cr

@@ -37,7 +37,7 @@ module Ameba::Rule::Performance
 
     properties do
       description "Identifies usage of `size` calls that follow filter"
-      filter_names %w(select reject)
+      filter_names %w[select reject]
     end
 
     MSG = "Use `count {...}` instead of `%s {...}.size`."

src/ameba/rule/style/is_a_filter.cr

@@ -43,7 +43,7 @@ module Ameba::Rule::Style
 
     properties do
       description "Identifies usage of `is_a?/nil?` calls within filters"
-      filter_names %w(select reject any? all? none? one?)
+      filter_names %w[select reject any? all? none? one?]
     end
 
     MSG = "Use `%s` instead of `%s`"