More refactoring from last code review. #3945

* Use commit objects instead of IDs when generating diffs
* Use proper references when generating MR's source and target
* Update broken specs

1 files changed, 323 insertions, 267 deletions

diff --git a/spec/fixtures/parallel_diff_result.yml b/spec/fixtures/parallel_diff_result.yml
index 020c1817226..4583de1231e 100644
--- a/spec/fixtures/parallel_diff_result.yml
+++ b/spec/fixtures/parallel_diff_result.yml
@@ -1,268 +1,324 @@
 ---
-- - match
-  - 6
-  - "@@ -6,12 +6,18 @@ module Popen"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
-  - match
-  - 6
-  - "@@ -6,12 +6,18 @@ module Popen"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
-- - 
-  - 6
-  - |2
-     <span id="LC6" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
-  - 
-  - 6
-  - |2
-     <span id="LC6" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
-- - 
-  - 7
-  - |2
-     <span id="LC7" class="line">  <span class="k">def</span> <span class="nf">popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="kp">nil</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7
-  - 
-  - 7
-  - |2
-     <span id="LC7" class="line">  <span class="k">def</span> <span class="nf">popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="kp">nil</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7
-- - 
-  - 8
-  - |2
-     <span id="LC8" class="line">    <span class="k">unless</span> <span class="n">cmd</span><span class="p">.</span><span class="nf">is_a?</span><span class="p">(</span><span class="no">Array</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8
-  - 
-  - 8
-  - |2
-     <span id="LC8" class="line">    <span class="k">unless</span> <span class="n">cmd</span><span class="p">.</span><span class="nf">is_a?</span><span class="p">(</span><span class="no">Array</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8
-- - old
-  - 9
-  - |
-    -<span id="LC9" class="line">      <span class="k">raise</span> <span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_9_9
-  - new
-  - 9
-  - |
-    +<span id="LC9" class="line">      <span class="k">raise</span> <span class="no">RuntimeError</span><span class="p">,</span> <span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_9
-- - 
-  - 10
-  - |2
-     <span id="LC10" class="line">    <span class="k">end</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10
-  - 
-  - 10
-  - |2
-     <span id="LC10" class="line">    <span class="k">end</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10
-- - 
-  - 11
-  - |2
-     <span id="LC11" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11
-  - 
-  - 11
-  - |2
-     <span id="LC11" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11
-- - 
-  - 12
-  - |2
-     <span id="LC12" class="line">    <span class="n">path</span> <span class="o">||=</span> <span class="no">Dir</span><span class="p">.</span><span class="nf">pwd</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12
-  - 
-  - 12
-  - |2
-     <span id="LC12" class="line">    <span class="n">path</span> <span class="o">||=</span> <span class="no">Dir</span><span class="p">.</span><span class="nf">pwd</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12
-- - old
-  - 13
-  - |
-    -<span id="LC13" class="line">    <span class="n">vars</span> <span class="o">=</span> <span class="p">{</span> <span class="s2">&quot;PWD&quot;</span> <span class="o">=&gt;</span> <span class="n">path</span> <span class="p">}</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_13_13
-  - old
-  - 
-  - "&nbsp;"
-  - 
-- - old
-  - 14
-  - |
-    -<span id="LC14" class="line">    <span class="n">options</span> <span class="o">=</span> <span class="p">{</span> <span class="ss">chdir: </span><span class="n">path</span> <span class="p">}</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_13
-  - new
-  - 13
-  - |
-    +<span id="LC13" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_13
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14
-  - new
-  - 14
-  - |
-    +<span id="LC14" class="line">    <span class="n">vars</span> <span class="o">=</span> <span class="p">{</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15
-  - new
-  - 15
-  - |
-    +<span id="LC15" class="line">      <span class="s2">&quot;PWD&quot;</span> <span class="o">=&gt;</span> <span class="n">path</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16
-  - new
-  - 16
-  - |
-    +<span id="LC16" class="line">    <span class="p">}</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17
-  - new
-  - 17
-  - |
-    +<span id="LC17" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18
-  - new
-  - 18
-  - |
-    +<span id="LC18" class="line">    <span class="n">options</span> <span class="o">=</span> <span class="p">{</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19
-  - new
-  - 19
-  - |
-    +<span id="LC19" class="line">      <span class="ss">chdir: </span><span class="n">path</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20
-  - new
-  - 20
-  - |
-    +<span id="LC20" class="line">    <span class="p">}</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20
-- - 
-  - 15
-  - |2
-     <span id="LC21" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21
-  - 
-  - 21
-  - |2
-     <span id="LC21" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21
-- - 
-  - 16
-  - |2
-     <span id="LC22" class="line">    <span class="k">unless</span> <span class="no">File</span><span class="p">.</span><span class="nf">directory?</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22
-  - 
-  - 22
-  - |2
-     <span id="LC22" class="line">    <span class="k">unless</span> <span class="no">File</span><span class="p">.</span><span class="nf">directory?</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22
-- - 
-  - 17
-  - |2
-     <span id="LC23" class="line">      <span class="no">FileUtils</span><span class="p">.</span><span class="nf">mkdir_p</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23
-  - 
-  - 23
-  - |2
-     <span id="LC23" class="line">      <span class="no">FileUtils</span><span class="p">.</span><span class="nf">mkdir_p</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23
-- - match
-  - 19
-  - "@@ -19,6 +25,7 @@ module Popen"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
-  - match
-  - 25
-  - "@@ -19,6 +25,7 @@ module Popen"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
-- - 
-  - 19
-  - |2
-     <span id="LC25" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
-  - 
-  - 25
-  - |2
-     <span id="LC25" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
-- - 
-  - 20
-  - |2
-     <span id="LC26" class="line">    <span class="vi">@cmd_output</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26
-  - 
-  - 26
-  - |2
-     <span id="LC26" class="line">    <span class="vi">@cmd_output</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26
-- - 
-  - 21
-  - |2
-     <span id="LC27" class="line">    <span class="vi">@cmd_status</span> <span class="o">=</span> <span class="mi">0</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27
-  - 
-  - 27
-  - |2
-     <span id="LC27" class="line">    <span class="vi">@cmd_status</span> <span class="o">=</span> <span class="mi">0</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27
-- - 
-  - 
-  - "&nbsp;"
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28
-  - new
-  - 28
-  - |
-    +<span id="LC28" class="line"></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28
-- - 
-  - 22
-  - |2
-     <span id="LC29" class="line">    <span class="no">Open3</span><span class="p">.</span><span class="nf">popen3</span><span class="p">(</span><span class="n">vars</span><span class="p">,</span> <span class="o">*</span><span class="n">cmd</span><span class="p">,</span> <span class="n">options</span><span class="p">)</span> <span class="k">do</span> <span class="o">|</span><span class="n">stdin</span><span class="p">,</span> <span class="n">stdout</span><span class="p">,</span> <span class="n">stderr</span><span class="p">,</span> <span class="n">wait_thr</span><span class="o">|</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29
-  - 
-  - 29
-  - |2
-     <span id="LC29" class="line">    <span class="no">Open3</span><span class="p">.</span><span class="nf">popen3</span><span class="p">(</span><span class="n">vars</span><span class="p">,</span> <span class="o">*</span><span class="n">cmd</span><span class="p">,</span> <span class="n">options</span><span class="p">)</span> <span class="k">do</span> <span class="o">|</span><span class="n">stdin</span><span class="p">,</span> <span class="n">stdout</span><span class="p">,</span> <span class="n">stderr</span><span class="p">,</span> <span class="n">wait_thr</span><span class="o">|</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29
-- - 
-  - 23
-  - |2
-     <span id="LC30" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stdout</span><span class="p">.</span><span class="nf">read</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30
-  - 
-  - 30
-  - |2
-     <span id="LC30" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stdout</span><span class="p">.</span><span class="nf">read</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30
-- - 
-  - 24
-  - |2
-     <span id="LC31" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stderr</span><span class="p">.</span><span class="nf">read</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31
-  - 
-  - 31
-  - |2
-     <span id="LC31" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stderr</span><span class="p">.</span><span class="nf">read</span></span>
-  - 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31
+- :left:
+    :type: match
+    :number: 6
+    :text: "@@ -6,12 +6,18 @@ module Popen"
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
+  :right:
+    :type: match
+    :number: 6
+    :text: "@@ -6,12 +6,18 @@ module Popen"
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
+- :left:
+    :type: 
+    :number: 6
+    :text: |2
+       <span id="LC6" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
+  :right:
+    :type: 
+    :number: 6
+    :text: |2
+       <span id="LC6" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6
+- :left:
+    :type: 
+    :number: 7
+    :text: |2
+       <span id="LC7" class="line">  <span class="k">def</span> <span class="nf">popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="kp">nil</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7
+  :right:
+    :type: 
+    :number: 7
+    :text: |2
+       <span id="LC7" class="line">  <span class="k">def</span> <span class="nf">popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="kp">nil</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7
+- :left:
+    :type: 
+    :number: 8
+    :text: |2
+       <span id="LC8" class="line">    <span class="k">unless</span> <span class="n">cmd</span><span class="p">.</span><span class="nf">is_a?</span><span class="p">(</span><span class="no">Array</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8
+  :right:
+    :type: 
+    :number: 8
+    :text: |2
+       <span id="LC8" class="line">    <span class="k">unless</span> <span class="n">cmd</span><span class="p">.</span><span class="nf">is_a?</span><span class="p">(</span><span class="no">Array</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8
+- :left:
+    :type: old
+    :number: 9
+    :text: |
+      -<span id="LC9" class="line">      <span class="k">raise</span> <span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_9_9
+  :right:
+    :type: new
+    :number: 9
+    :text: |
+      +<span id="LC9" class="line">      <span class="k">raise</span> <span class="no">RuntimeError</span><span class="p">,</span> <span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_9
+- :left:
+    :type: 
+    :number: 10
+    :text: |2
+       <span id="LC10" class="line">    <span class="k">end</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10
+  :right:
+    :type: 
+    :number: 10
+    :text: |2
+       <span id="LC10" class="line">    <span class="k">end</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10
+- :left:
+    :type: 
+    :number: 11
+    :text: |2
+       <span id="LC11" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11
+  :right:
+    :type: 
+    :number: 11
+    :text: |2
+       <span id="LC11" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11
+- :left:
+    :type: 
+    :number: 12
+    :text: |2
+       <span id="LC12" class="line">    <span class="n">path</span> <span class="o">||=</span> <span class="no">Dir</span><span class="p">.</span><span class="nf">pwd</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12
+  :right:
+    :type: 
+    :number: 12
+    :text: |2
+       <span id="LC12" class="line">    <span class="n">path</span> <span class="o">||=</span> <span class="no">Dir</span><span class="p">.</span><span class="nf">pwd</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12
+- :left:
+    :type: old
+    :number: 13
+    :text: |
+      -<span id="LC13" class="line">    <span class="n">vars</span> <span class="o">=</span> <span class="p">{</span> <span class="s2">&quot;PWD&quot;</span> <span class="o">=&gt;</span> <span class="n">path</span> <span class="p">}</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_13_13
+  :right:
+    :type: old
+    :number: 
+    :text: ''
+    :line_code: 
+- :left:
+    :type: old
+    :number: 14
+    :text: |
+      -<span id="LC14" class="line">    <span class="n">options</span> <span class="o">=</span> <span class="p">{</span> <span class="ss">chdir: </span><span class="n">path</span> <span class="p">}</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_13
+  :right:
+    :type: new
+    :number: 13
+    :text: |
+      +<span id="LC13" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_13
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14
+  :right:
+    :type: new
+    :number: 14
+    :text: |
+      +<span id="LC14" class="line">    <span class="n">vars</span> <span class="o">=</span> <span class="p">{</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15
+  :right:
+    :type: new
+    :number: 15
+    :text: |
+      +<span id="LC15" class="line">      <span class="s2">&quot;PWD&quot;</span> <span class="o">=&gt;</span> <span class="n">path</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16
+  :right:
+    :type: new
+    :number: 16
+    :text: |
+      +<span id="LC16" class="line">    <span class="p">}</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17
+  :right:
+    :type: new
+    :number: 17
+    :text: |
+      +<span id="LC17" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18
+  :right:
+    :type: new
+    :number: 18
+    :text: |
+      +<span id="LC18" class="line">    <span class="n">options</span> <span class="o">=</span> <span class="p">{</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19
+  :right:
+    :type: new
+    :number: 19
+    :text: |
+      +<span id="LC19" class="line">      <span class="ss">chdir: </span><span class="n">path</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20
+  :right:
+    :type: new
+    :number: 20
+    :text: |
+      +<span id="LC20" class="line">    <span class="p">}</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20
+- :left:
+    :type: 
+    :number: 15
+    :text: |2
+       <span id="LC21" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21
+  :right:
+    :type: 
+    :number: 21
+    :text: |2
+       <span id="LC21" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21
+- :left:
+    :type: 
+    :number: 16
+    :text: |2
+       <span id="LC22" class="line">    <span class="k">unless</span> <span class="no">File</span><span class="p">.</span><span class="nf">directory?</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22
+  :right:
+    :type: 
+    :number: 22
+    :text: |2
+       <span id="LC22" class="line">    <span class="k">unless</span> <span class="no">File</span><span class="p">.</span><span class="nf">directory?</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22
+- :left:
+    :type: 
+    :number: 17
+    :text: |2
+       <span id="LC23" class="line">      <span class="no">FileUtils</span><span class="p">.</span><span class="nf">mkdir_p</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23
+  :right:
+    :type: 
+    :number: 23
+    :text: |2
+       <span id="LC23" class="line">      <span class="no">FileUtils</span><span class="p">.</span><span class="nf">mkdir_p</span><span class="p">(</span><span class="n">path</span><span class="p">)</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23
+- :left:
+    :type: match
+    :number: 19
+    :text: "@@ -19,6 +25,7 @@ module Popen"
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
+  :right:
+    :type: match
+    :number: 25
+    :text: "@@ -19,6 +25,7 @@ module Popen"
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
+- :left:
+    :type: 
+    :number: 19
+    :text: |2
+       <span id="LC25" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
+  :right:
+    :type: 
+    :number: 25
+    :text: |2
+       <span id="LC25" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25
+- :left:
+    :type: 
+    :number: 20
+    :text: |2
+       <span id="LC26" class="line">    <span class="vi">@cmd_output</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26
+  :right:
+    :type: 
+    :number: 26
+    :text: |2
+       <span id="LC26" class="line">    <span class="vi">@cmd_output</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26
+- :left:
+    :type: 
+    :number: 21
+    :text: |2
+       <span id="LC27" class="line">    <span class="vi">@cmd_status</span> <span class="o">=</span> <span class="mi">0</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27
+  :right:
+    :type: 
+    :number: 27
+    :text: |2
+       <span id="LC27" class="line">    <span class="vi">@cmd_status</span> <span class="o">=</span> <span class="mi">0</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27
+- :left:
+    :type: 
+    :number: 
+    :text: ''
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28
+  :right:
+    :type: new
+    :number: 28
+    :text: |
+      +<span id="LC28" class="line"></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28
+- :left:
+    :type: 
+    :number: 22
+    :text: |2
+       <span id="LC29" class="line">    <span class="no">Open3</span><span class="p">.</span><span class="nf">popen3</span><span class="p">(</span><span class="n">vars</span><span class="p">,</span> <span class="o">*</span><span class="n">cmd</span><span class="p">,</span> <span class="n">options</span><span class="p">)</span> <span class="k">do</span> <span class="o">|</span><span class="n">stdin</span><span class="p">,</span> <span class="n">stdout</span><span class="p">,</span> <span class="n">stderr</span><span class="p">,</span> <span class="n">wait_thr</span><span class="o">|</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29
+  :right:
+    :type: 
+    :number: 29
+    :text: |2
+       <span id="LC29" class="line">    <span class="no">Open3</span><span class="p">.</span><span class="nf">popen3</span><span class="p">(</span><span class="n">vars</span><span class="p">,</span> <span class="o">*</span><span class="n">cmd</span><span class="p">,</span> <span class="n">options</span><span class="p">)</span> <span class="k">do</span> <span class="o">|</span><span class="n">stdin</span><span class="p">,</span> <span class="n">stdout</span><span class="p">,</span> <span class="n">stderr</span><span class="p">,</span> <span class="n">wait_thr</span><span class="o">|</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29
+- :left:
+    :type: 
+    :number: 23
+    :text: |2
+       <span id="LC30" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stdout</span><span class="p">.</span><span class="nf">read</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30
+  :right:
+    :type: 
+    :number: 30
+    :text: |2
+       <span id="LC30" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stdout</span><span class="p">.</span><span class="nf">read</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30
+- :left:
+    :type: 
+    :number: 24
+    :text: |2
+       <span id="LC31" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stderr</span><span class="p">.</span><span class="nf">read</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31
+  :right:
+    :type: 
+    :number: 31
+    :text: |2
+       <span id="LC31" class="line">      <span class="vi">@cmd_output</span> <span class="o">&lt;&lt;</span> <span class="n">stderr</span><span class="p">.</span><span class="nf">read</span></span>
+    :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31