commit 52a5ca6807f22a7484e0ff0a210c0dd2e2b12bf1
Author: Violet Truchseß <me@v-tr.org>
Date:   Fri May 17 12:33:32 2024 +0200

    initial commit

diff --git a/rules.json b/rules.json
new file mode 100644
index 0000000..fd022a9
--- /dev/null
+++ b/rules.json
@@ -0,0 +1,240 @@
+{
+    "description": "German Umlaut Keyboard Mapping",
+    "manipulators": [
+        {
+            "from": {
+                "key_code": "a",
+                "modifiers": {
+                    "mandatory": [
+                        "option"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "a"
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "a",
+                "modifiers": {
+                    "mandatory": [
+                        "option",
+                        "shift"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "a",
+                    "modifiers": [
+                        "left_shift"
+                    ]
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "o",
+                "modifiers": {
+                    "mandatory": [
+                        "option"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "o"
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "o",
+                "modifiers": {
+                    "mandatory": [
+                        "option",
+                        "shift"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "o",
+                    "modifiers": [
+                        "left_shift"
+                    ]
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "u",
+                "modifiers": {
+                    "mandatory": [
+                        "option"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "u"
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "u",
+                "modifiers": {
+                    "mandatory": [
+                        "option",
+                        "shift"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                },
+                {
+                    "key_code": "u",
+                    "modifiers": [
+                        "left_shift"
+                    ]
+                },
+                {
+                    "key_code": "vk_none"
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "s",
+                "modifiers": {
+                    "mandatory": [
+                        "option"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "s",
+                    "modifiers": [
+                        "left_option"
+                    ]
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "e",
+                "modifiers": {
+                    "mandatory": [
+                        "option"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "2",
+                    "modifiers": [
+                        "left_option",
+                        "left_shift"
+                    ]
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "non_us_backslash",
+                "modifiers": {
+                    "mandatory": []
+                }
+            },
+            "to": [
+                {
+                    "key_code": "grave_accent_and_tilde",
+                    "modifiers": []
+                }
+            ],
+            "type": "basic"
+        },
+        {
+            "from": {
+                "key_code": "non_us_backslash",
+                "modifiers": {
+                    "mandatory": [
+                        "shift"
+                    ]
+                }
+            },
+            "to": [
+                {
+                    "key_code": "grave_accent_and_tilde",
+                    "modifiers": [
+                        "left_shift"
+                    ]
+                }
+            ],
+            "type": "basic"
+        }
+    ]
+}