prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  list_language no longer has an idea of a changeid
  We dropped change_id concept with 2.7.0 and now we have the idea of `revision`.  Previously I could get a list of active languages since a `change_id` using `list_languages`.  Now however I cannot.  I used `change_id` in the past to allow me to decide which languages to sync.  I also use it to record in a log which languages have been active since the last changeid.
  
  So this is to either
  1. Bring back `--revision` to `list_languages` so we can see languages active since some revision
  2. Explain what other process could be used to gather this info
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `pootle/apps/pootle_app/management/commands/list_projects.py`
  Content:
  ```
  1 #!/usr/bin/env python
  2 # -*- coding: utf-8 -*-
  3 #
  4 # Copyright (C) Pootle contributors.
  5 #
  6 # This file is a part of the Pootle project. It is distributed under the GPL3
  7 # or later license. See the LICENSE file for a copy of the license and the
  8 # AUTHORS file for copyright and authorship information.
  9 
  10 import os
  11 os.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'
  12 
  13 from django.core.management.base import NoArgsCommand
  14 
  15 from pootle_project.models import Project
  16 
  17 
  18 class Command(NoArgsCommand):
  19 
  20     def handle_noargs(self, **options):
  21         self.list_projects(**options)
  22 
  23     def list_projects(self, **options):
  24         """List all projects on the server."""
  25 
  26         for project in Project.objects.all():
  27             self.stdout.write(project.code)
  28
  ```
  
  Path: `pootle/apps/pootle_app/management/commands/list_languages.py`
  Content:
  ```
  1 #!/usr/bin/env python
  2 # -*- coding: utf-8 -*-
  3 #
  4 # Copyright (C) Pootle contributors.
  5 #
  6 # This file is a part of the Pootle project. It is distributed under the GPL3
  7 # or later license. See the LICENSE file for a copy of the license and the
  8 # AUTHORS file for copyright and authorship information.
  9 
  10 import os
  11 os.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'
  12 
  13 from optparse import make_option
  14 
  15 from django.core.management.base import NoArgsCommand
  16 
  17 
  18 class Command(NoArgsCommand):
  19     option_list = NoArgsCommand.option_list + (
  20             make_option('--project', action='append', dest='projects',
  21                         help='Limit to PROJECTS'),
  22     )
  23     help = "List language codes."
  24 
  25     def handle_noargs(self, **options):
  26         self.list_languages(**options)
  27 
  28     def list_languages(self, **options):
  29         """List all languages on the server or the given projects."""
  30         projects = options.get('projects', [])
  31 
  32         from pootle_translationproject.models import TranslationProject
  33         tps = TranslationProject.objects.distinct()
  34         tps = tps.exclude(language__code='templates').order_by('language__code')
  35 
  36         if projects:
  37             tps = tps.filter(project__code__in=projects)
  38 
  39         for lang in tps.values_list('language__code', flat=True):
  40             self.stdout.write(lang)
  41
  ```
  --- 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()
  
  ```
  
golden_diff: diff --git a/pootle/apps/pootle_app/management/commands/list_languages.py b/pootle/apps/pootle_app/management/commands/list_languages.py
  --- a/pootle/apps/pootle_app/management/commands/list_languages.py
  +++ b/pootle/apps/pootle_app/management/commands/list_languages.py
  @@ -19,6 +19,9 @@
       option_list = NoArgsCommand.option_list + (
               make_option('--project', action='append', dest='projects',
                           help='Limit to PROJECTS'),
  +            make_option("--modified-since", action="store", dest="modified_since",
  +                        type=int,
  +                        help="Only process translations newer than specified revision"),
       )
       help = "List language codes."
   
  @@ -33,6 +36,10 @@
           tps = TranslationProject.objects.distinct()
           tps = tps.exclude(language__code='templates').order_by('language__code')
   
  +        revision = options.get("modified_since", 0)
  +        if revision:
  +            tps = tps.filter(submission__id__gt=revision)
  +
           if projects:
               tps = tps.filter(project__code__in=projects)
   
  diff --git a/pootle/apps/pootle_app/management/commands/list_projects.py b/pootle/apps/pootle_app/management/commands/list_projects.py
  --- a/pootle/apps/pootle_app/management/commands/list_projects.py
  +++ b/pootle/apps/pootle_app/management/commands/list_projects.py
  @@ -10,12 +10,20 @@
   import os
   os.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'
   
  +from optparse import make_option
  +
   from django.core.management.base import NoArgsCommand
   
   from pootle_project.models import Project
   
   
   class Command(NoArgsCommand):
  +    option_list = NoArgsCommand.option_list + (
  +        make_option("--modified-since",
  +            action="store", dest="modified_since", type=int,
  +            help="Only process translations newer than specified revision"
  +        ),
  +    )
   
       def handle_noargs(self, **options):
           self.list_projects(**options)
  @@ -23,5 +31,15 @@
       def list_projects(self, **options):
           """List all projects on the server."""
   
  -        for project in Project.objects.all():
  -            self.stdout.write(project.code)
  +        revision = options.get("modified_since", 0)
  +        if revision:
  +            from pootle_translationproject.models import TranslationProject
  +            tps = TranslationProject.objects.filter(submission__id__gt=revision) \
  +                .distinct().values("project__code")
  +
  +            for tp in tps:
  +                self.stdout.write(tp["project__code"])
  +
  +        else:
  +            for project in Project.objects.all():
  +                self.stdout.write(project.code)
  
verification_info: {"golden_diff": "diff --git a/pootle/apps/pootle_app/management/commands/list_languages.py b/pootle/apps/pootle_app/management/commands/list_languages.py\n--- a/pootle/apps/pootle_app/management/commands/list_languages.py\n+++ b/pootle/apps/pootle_app/management/commands/list_languages.py\n@@ -19,6 +19,9 @@\n     option_list = NoArgsCommand.option_list + (\n             make_option('--project', action='append', dest='projects',\n                         help='Limit to PROJECTS'),\n+            make_option(\"--modified-since\", action=\"store\", dest=\"modified_since\",\n+                        type=int,\n+                        help=\"Only process translations newer than specified revision\"),\n     )\n     help = \"List language codes.\"\n \n@@ -33,6 +36,10 @@\n         tps = TranslationProject.objects.distinct()\n         tps = tps.exclude(language__code='templates').order_by('language__code')\n \n+        revision = options.get(\"modified_since\", 0)\n+        if revision:\n+            tps = tps.filter(submission__id__gt=revision)\n+\n         if projects:\n             tps = tps.filter(project__code__in=projects)\n \ndiff --git a/pootle/apps/pootle_app/management/commands/list_projects.py b/pootle/apps/pootle_app/management/commands/list_projects.py\n--- a/pootle/apps/pootle_app/management/commands/list_projects.py\n+++ b/pootle/apps/pootle_app/management/commands/list_projects.py\n@@ -10,12 +10,20 @@\n import os\n os.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'\n \n+from optparse import make_option\n+\n from django.core.management.base import NoArgsCommand\n \n from pootle_project.models import Project\n \n \n class Command(NoArgsCommand):\n+    option_list = NoArgsCommand.option_list + (\n+        make_option(\"--modified-since\",\n+            action=\"store\", dest=\"modified_since\", type=int,\n+            help=\"Only process translations newer than specified revision\"\n+        ),\n+    )\n \n     def handle_noargs(self, **options):\n         self.list_projects(**options)\n@@ -23,5 +31,15 @@\n     def list_projects(self, **options):\n         \"\"\"List all projects on the server.\"\"\"\n \n-        for project in Project.objects.all():\n-            self.stdout.write(project.code)\n+        revision = options.get(\"modified_since\", 0)\n+        if revision:\n+            from pootle_translationproject.models import TranslationProject\n+            tps = TranslationProject.objects.filter(submission__id__gt=revision) \\\n+                .distinct().values(\"project__code\")\n+\n+            for tp in tps:\n+                self.stdout.write(tp[\"project__code\"])\n+\n+        else:\n+            for project in Project.objects.all():\n+                self.stdout.write(project.code)\n", "issue": "list_language no longer has an idea of a changeid\nWe dropped change_id concept with 2.7.0 and now we have the idea of `revision`.  Previously I could get a list of active languages since a `change_id` using `list_languages`.  Now however I cannot.  I used `change_id` in the past to allow me to decide which languages to sync.  I also use it to record in a log which languages have been active since the last changeid.\n\nSo this is to either\n1. Bring back `--revision` to `list_languages` so we can see languages active since some revision\n2. Explain what other process could be used to gather this info\n\n", "before_files": [{"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n#\n# Copyright (C) Pootle contributors.\n#\n# This file is a part of the Pootle project. It is distributed under the GPL3\n# or later license. See the LICENSE file for a copy of the license and the\n# AUTHORS file for copyright and authorship information.\n\nimport os\nos.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'\n\nfrom django.core.management.base import NoArgsCommand\n\nfrom pootle_project.models import Project\n\n\nclass Command(NoArgsCommand):\n\n    def handle_noargs(self, **options):\n        self.list_projects(**options)\n\n    def list_projects(self, **options):\n        \"\"\"List all projects on the server.\"\"\"\n\n        for project in Project.objects.all():\n            self.stdout.write(project.code)\n", "path": "pootle/apps/pootle_app/management/commands/list_projects.py"}, {"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n#\n# Copyright (C) Pootle contributors.\n#\n# This file is a part of the Pootle project. It is distributed under the GPL3\n# or later license. See the LICENSE file for a copy of the license and the\n# AUTHORS file for copyright and authorship information.\n\nimport os\nos.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'\n\nfrom optparse import make_option\n\nfrom django.core.management.base import NoArgsCommand\n\n\nclass Command(NoArgsCommand):\n    option_list = NoArgsCommand.option_list + (\n            make_option('--project', action='append', dest='projects',\n                        help='Limit to PROJECTS'),\n    )\n    help = \"List language codes.\"\n\n    def handle_noargs(self, **options):\n        self.list_languages(**options)\n\n    def list_languages(self, **options):\n        \"\"\"List all languages on the server or the given projects.\"\"\"\n        projects = options.get('projects', [])\n\n        from pootle_translationproject.models import TranslationProject\n        tps = TranslationProject.objects.distinct()\n        tps = tps.exclude(language__code='templates').order_by('language__code')\n\n        if projects:\n            tps = tps.filter(project__code__in=projects)\n\n        for lang in tps.values_list('language__code', flat=True):\n            self.stdout.write(lang)\n", "path": "pootle/apps/pootle_app/management/commands/list_languages.py"}], "after_files": [{"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n#\n# Copyright (C) Pootle contributors.\n#\n# This file is a part of the Pootle project. It is distributed under the GPL3\n# or later license. See the LICENSE file for a copy of the license and the\n# AUTHORS file for copyright and authorship information.\n\nimport os\nos.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'\n\nfrom optparse import make_option\n\nfrom django.core.management.base import NoArgsCommand\n\nfrom pootle_project.models import Project\n\n\nclass Command(NoArgsCommand):\n    option_list = NoArgsCommand.option_list + (\n        make_option(\"--modified-since\",\n            action=\"store\", dest=\"modified_since\", type=int,\n            help=\"Only process translations newer than specified revision\"\n        ),\n    )\n\n    def handle_noargs(self, **options):\n        self.list_projects(**options)\n\n    def list_projects(self, **options):\n        \"\"\"List all projects on the server.\"\"\"\n\n        revision = options.get(\"modified_since\", 0)\n        if revision:\n            from pootle_translationproject.models import TranslationProject\n            tps = TranslationProject.objects.filter(submission__id__gt=revision) \\\n                .distinct().values(\"project__code\")\n\n            for tp in tps:\n                self.stdout.write(tp[\"project__code\"])\n\n        else:\n            for project in Project.objects.all():\n                self.stdout.write(project.code)\n", "path": "pootle/apps/pootle_app/management/commands/list_projects.py"}, {"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n#\n# Copyright (C) Pootle contributors.\n#\n# This file is a part of the Pootle project. It is distributed under the GPL3\n# or later license. See the LICENSE file for a copy of the license and the\n# AUTHORS file for copyright and authorship information.\n\nimport os\nos.environ['DJANGO_SETTINGS_MODULE'] = 'pootle.settings'\n\nfrom optparse import make_option\n\nfrom django.core.management.base import NoArgsCommand\n\n\nclass Command(NoArgsCommand):\n    option_list = NoArgsCommand.option_list + (\n            make_option('--project', action='append', dest='projects',\n                        help='Limit to PROJECTS'),\n            make_option(\"--modified-since\", action=\"store\", dest=\"modified_since\",\n                        type=int,\n                        help=\"Only process translations newer than specified revision\"),\n    )\n    help = \"List language codes.\"\n\n    def handle_noargs(self, **options):\n        self.list_languages(**options)\n\n    def list_languages(self, **options):\n        \"\"\"List all languages on the server or the given projects.\"\"\"\n        projects = options.get('projects', [])\n\n        from pootle_translationproject.models import TranslationProject\n        tps = TranslationProject.objects.distinct()\n        tps = tps.exclude(language__code='templates').order_by('language__code')\n\n        revision = options.get(\"modified_since\", 0)\n        if revision:\n            tps = tps.filter(submission__id__gt=revision)\n\n        if projects:\n            tps = tps.filter(project__code__in=projects)\n\n        for lang in tps.values_list('language__code', flat=True):\n            self.stdout.write(lang)\n", "path": "pootle/apps/pootle_app/management/commands/list_languages.py"}]}