Use indentation code blocks instead of code fences

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## HEAD (unreleased)
 
+- Codeblocks in output are now indented with 4 spaces and "code fences" are removed (https://github.com/zombocom/syntax_search/pull/11)
 - "Unmatched end" and "missing end" not generate different error text instructions (https://github.com/zombocom/syntax_search/pull/10)
 
 ## 0.1.1

lib/syntax_search/display_invalid_blocks.rb

@@ -64,16 +64,13 @@ def call
       EOM
     end
 
-    def indent(string, with: "  ")
+    def indent(string, with: "    ")
       string.each_line.map {|l| with  + l }.join
     end
 
     def code_block
       string = String.new("")
-      string << "```\n"
-      # string << "#".rjust(@digit_count) + " filename: #{filename}\n\n" if filename
       string << code_with_lines
-      string << "```\n"
       string
     end
 

spec/unit/code_search_spec.rb

@@ -17,7 +17,7 @@ def hai
         search.call
 
         expect(search.record_dir.entries.map(&:to_s)).to include("1-add-1.txt")
-        expect(search.record_dir.join("1-add-1.txt").read).to eq(<<~EOM.indent(2))
+        expect(search.record_dir.join("1-add-1.txt").read).to eq(<<~EOM.indent(4))
             1  class OH
             2    def hello
           ❯ 3    def hai

spec/unit/display_invalid_blocks_spec.rb

@@ -60,13 +60,11 @@ def hai
         terminal: false
       )
       expect(display.code_block).to eq(<<~EOM)
-       ```
          1  class OH
        ❯ 2    def hello
          3    def hai
          4    end
          5  end
-       ```
       EOM
     end
     it "shows terminal characters" do