fix: disable diff detection for renames and copies (#3330)

* fix: disable diff detection for renames and copies

* fix format

Author: peter-evans

Diff for: __test__/entrypoint.sh

@@ -19,14 +19,17 @@ git clone git://127.0.0.1/repos/test-base.git /git/local/repos/test-base
 cd /git/local/repos/test-base
 git config --global user.email "[email protected]"
 git config --global user.name "Your Name"
-echo "#test-base" > README.md
+echo "#test-base" > README_TEMP.md
 git add .
 git commit -m "initial commit"
 git commit --allow-empty -m "empty commit for tests"
-echo "#test-base :sparkles:" > README.md
+echo "#test-base :sparkles:" > README_TEMP.md
 git add .
 git commit -m "add sparkles" -m "Change description:
-- updates README.md to add sparkles to the title"
+- updates README_TEMP.md to add sparkles to the title"
+mv README_TEMP.md README.md
+git add .
+git commit -m "rename readme"
 git push -u
 git log -1 --pretty=oneline
 git config --global --unset user.email

Diff for: __test__/git-command-manager.int.test.ts

@@ -11,14 +11,15 @@ describe('git-command-manager integration tests', () => {
   })
 
   it('tests getCommit', async () => {
-    const initialCommit = await git.getCommit('HEAD^^')
-    const emptyCommit = await git.getCommit('HEAD^')
+    const initialCommit = await git.getCommit('HEAD^^^')
+    const emptyCommit = await git.getCommit('HEAD^^')
+    const modifiedCommit = await git.getCommit('HEAD^')
     const headCommit = await git.getCommit('HEAD')
 
     expect(initialCommit.subject).toEqual('initial commit')
     expect(initialCommit.signed).toBeFalsy()
     expect(initialCommit.changes).toEqual([
-      {mode: '100644', status: 'A', path: 'README.md'}
+      {mode: '100644', status: 'A', path: 'README_TEMP.md'}
     ])
 
     expect(emptyCommit.subject).toEqual('empty commit for tests')
@@ -27,11 +28,19 @@ describe('git-command-manager integration tests', () => {
     expect(emptyCommit.signed).toBeFalsy()
     expect(emptyCommit.changes).toEqual([])
 
-    expect(headCommit.subject).toEqual('add sparkles')
-    expect(headCommit.parents[0]).toEqual(emptyCommit.sha)
+    expect(modifiedCommit.subject).toEqual('add sparkles')
+    expect(modifiedCommit.parents[0]).toEqual(emptyCommit.sha)
+    expect(modifiedCommit.signed).toBeFalsy()
+    expect(modifiedCommit.changes).toEqual([
+      {mode: '100644', status: 'M', path: 'README_TEMP.md'}
+    ])
+
+    expect(headCommit.subject).toEqual('rename readme')
+    expect(headCommit.parents[0]).toEqual(modifiedCommit.sha)
     expect(headCommit.signed).toBeFalsy()
     expect(headCommit.changes).toEqual([
-      {mode: '100644', status: 'M', path: 'README.md'}
+      {mode: '100644', status: 'A', path: 'README.md'},
+      {mode: '100644', status: 'D', path: 'README_TEMP.md'}
     ])
   })
 })

Diff for: dist/index.js

@@ -745,6 +745,7 @@ class GitCommandManager {
                 'show',
                 '--raw',
                 '--cc',
+                '--no-renames',
                 `--format=%H%n%T%n%P%n%G?%n%s%n%b%n${endOfBody}`,
                 ref
             ]);

Diff for: src/git-command-manager.ts

@@ -159,6 +159,7 @@ export class GitCommandManager {
       'show',
       '--raw',
       '--cc',
+      '--no-renames',
       `--format=%H%n%T%n%P%n%G?%n%s%n%b%n${endOfBody}`,
       ref
     ])