added --files-changed flag

borgmatic/borg/create.py

@@ -198,6 +198,7 @@ def make_base_create_command(  # noqa: PLR0912
     umask = config.get('umask', None)
     lock_wait = config.get('lock_wait', None)
     list_filter_flags = flags.make_list_filter_flags(local_borg_version, dry_run)
+    files_changed = config.get('files_changed')
     files_cache = config.get('files_cache')
     archive_name_format = (
         config.get('archive_name_format', flags.get_default_archive_name_format(local_borg_version))
@@ -248,6 +249,7 @@ def make_base_create_command(  # noqa: PLR0912
         + (('--nobirthtime',) if config.get('birthtime') is False else ())
         + (('--read-special',) if config.get('read_special') or stream_processes else ())
         + noflags_flags
+        + (('--files-changed', files_changed) if files_changed else ())
         + (('--files-cache', files_cache) if files_cache else ())
         + (('--remote-path', remote_path) if remote_path else ())
         + (('--umask', str(umask)) if umask else ())

borgmatic/config/schema.yaml

@@ -104,9 +104,8 @@ properties:
             Threshold for considering a file as changed. See
             https://borgbackup.readthedocs.io/en/stable/usage/create.html for
             details. Defaults to "mtime" (i.e., a file is considered
-            changed if either its mtime has changed since the last
-            backup).
-        example: size
+            changed if its mtime has changed since the last backup.)
+        example: ctime
     working_directory:
         type: string
         description: |

tests/unit/borg/test_create.py

@@ -483,6 +483,7 @@ def test_make_base_create_command_with_store_config_false_omits_config_files():
         ('flags', False, True, ('--noflags',)),
         ('flags', False, False, ('--nobsdflags',)),
         ('files_cache', 'ctime,size', True, ('--files-cache', 'ctime,size')),
+        ('files_changed', 'ctime', True, ('--files-changed', 'ctime')),
         ('umask', 740, True, ('--umask', '740')),
         ('lock_wait', 5, True, ('--lock-wait', '5')),
     ),