UI: Do not save unchanged settings to settings.yaml

modules/shared.py

@@ -1,4 +1,5 @@
 import argparse
+import copy
 import os
 import sys
 from collections import OrderedDict
@@ -65,6 +66,7 @@ settings = {
     'default_extensions': ['gallery'],
 }
 
+default_settings = copy.deepcopy(settings)
 
 # Parser copied from https://github.com/vladmandic/automatic
 parser = argparse.ArgumentParser(description="Text generation web UI", conflict_handler='resolve', add_help=True, formatter_class=lambda prog: argparse.HelpFormatter(prog, max_help_position=55, indent_increment=2, width=200))

modules/ui.py

@@ -234,6 +234,11 @@ def save_settings(state, preset, extensions_list, show_controls, theme_state):
                 _id = f"{extension_name}-{param}"
                 output[_id] = params[param]
 
+    # Do not save unchanged settings
+    for key in list(output.keys()):
+        if key in shared.default_settings and output[key] == shared.default_settings[key]:
+            output.pop(key)
+
     return yaml.dump(output, sort_keys=False, width=float("inf"))