Only use LF for line breaks in diffs

Git uses LF for line breaks in diffs, not CR or other delimiters. When
we are using other delimiters for diving diff output into lines, too,
we can get errors because diff lines can contain CRs. When we try to
split such lines, we get exceptions because these lines cannot be parsed

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixes configuration of jetty listener address with system property `jetty.host` ([#1173](https://github.com/scm-manager/scm-manager/pull/1173), [#1174](https://github.com/scm-manager/scm-manager/pull/1174))
 - Fixes loading plugin bundles with context path `/` ([#1182](https://github.com/scm-manager/scm-manager/pull/1182/files), [#1181](https://github.com/scm-manager/scm-manager/issues/1181))
 - Sets the new plugin center URL once ([#1184](https://github.com/scm-manager/scm-manager/pull/1184))
+- Diffs with CR characters are parsed correctly ([#1185](https://github.com/scm-manager/scm-manager/pull/1185))
 
 ## [2.0.0] - 2020-06-04
 ### Added

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitHunkParser.java

@@ -49,7 +49,7 @@ final class GitHunkParser {
   public List<Hunk> parse(String content) {
     List<Hunk> hunks = new ArrayList<>();
 
-    try (Scanner scanner = new Scanner(content).useDelimiter("[\n\r\u2028\u2029\u0085]+")) {
+    try (Scanner scanner = new Scanner(content).useDelimiter("\n")) {
       while (scanner.hasNext()) {
         String line = scanner.next();
         if (line.startsWith("@@")) {