We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Escaped tags in every revision page
![screenshot from 2016-04-02 21 38 15](https://cloud.githubusercontent.com/assets/72821/14228635/3bd5c514-f91b-11e5-8953-753dbd8249ed.png)

Escaped tags in every revision page
![screenshot from 2016-04-02 21 38 15](https://cloud.githubusercontent.com/assets/72821/14228635/3bd5c514-f91b-11e5-8953-753dbd8249ed.png)


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `workshops/templatetags/diff.py`
Content:
```
1 from django import template
2 
3 from reversion.helpers import generate_patch_html
4 
5 register = template.Library()
6 
7 
8 @register.simple_tag
9 def semantic_diff(left, right, field):
10     return generate_patch_html(left, right, field, cleanup='semantic')
11
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/workshops/templatetags/diff.py b/workshops/templatetags/diff.py
--- a/workshops/templatetags/diff.py
+++ b/workshops/templatetags/diff.py
@@ -1,4 +1,5 @@
 from django import template
+from django.utils.safestring import mark_safe
 
 from reversion.helpers import generate_patch_html
 
@@ -7,4 +8,4 @@
 
 @register.simple_tag
 def semantic_diff(left, right, field):
-    return generate_patch_html(left, right, field, cleanup='semantic')
+    return mark_safe(generate_patch_html(left, right, field, cleanup='semantic'))

{"golden_diff": "diff --git a/workshops/templatetags/diff.py b/workshops/templatetags/diff.py\n--- a/workshops/templatetags/diff.py\n+++ b/workshops/templatetags/diff.py\n@@ -1,4 +1,5 @@\n from django import template\n+from django.utils.safestring import mark_safe\n \n from reversion.helpers import generate_patch_html\n \n@@ -7,4 +8,4 @@\n \n @register.simple_tag\n def semantic_diff(left, right, field):\n-    return generate_patch_html(left, right, field, cleanup='semantic')\n+    return mark_safe(generate_patch_html(left, right, field, cleanup='semantic'))\n", "issue": "Escaped tags in every revision page\n![screenshot from 2016-04-02 21 38 15](https://cloud.githubusercontent.com/assets/72821/14228635/3bd5c514-f91b-11e5-8953-753dbd8249ed.png)\n\nEscaped tags in every revision page\n![screenshot from 2016-04-02 21 38 15](https://cloud.githubusercontent.com/assets/72821/14228635/3bd5c514-f91b-11e5-8953-753dbd8249ed.png)\n\n", "before_files": [{"content": "from django import template\n\nfrom reversion.helpers import generate_patch_html\n\nregister = template.Library()\n\n\n@register.simple_tag\ndef semantic_diff(left, right, field):\n    return generate_patch_html(left, right, field, cleanup='semantic')\n", "path": "workshops/templatetags/diff.py"}], "after_files": [{"content": "from django import template\nfrom django.utils.safestring import mark_safe\n\nfrom reversion.helpers import generate_patch_html\n\nregister = template.Library()\n\n\n@register.simple_tag\ndef semantic_diff(left, right, field):\n    return mark_safe(generate_patch_html(left, right, field, cleanup='semantic'))\n", "path": "workshops/templatetags/diff.py"}]}