fix: warned about future removal of !!!-style syntax

README.md

@@ -441,6 +441,10 @@ Mermaid graphs are supported by Admonitions, but with some caveats:
 
 ## Non-code block Admonitions
 
+> :heavy_exclamation_mark: This syntax will be removed in a future version!
+>
+> It is no longer possible to enable this syntax. Legacy support will continue until version **7.0.0**.
+
 Please note: An additional non-code block syntax can be seen in the [Microsoft Document Syntax](#microsoft-document-syntax) section.
 
 As of version 6.0.0, there is a new setting: Enable Non-codeblock Admonitions.
@@ -622,7 +626,9 @@ Admonitions with no content are hidden by default.
 ### Enable Non-codeblock Admonitions
 
 > :heavy_exclamation_mark: This syntax will be removed in a future version!
-> 
+>
+> It is no longer possible to enable this setting. Legacy support will continue until version **7.0.0**.
+>  
 > It is recommended to use the [Microsoft Document Syntax](#microsoft-document-syntax) instead.
 
 Enabled use of `!!! ad-<type>` style admonitions. No longer supported, will be removed in a future version.

src/@types/index.ts

@@ -29,6 +29,7 @@ export interface AdmonitionSettings {
     defaultCollapseType: "open" | "closed";
     syncLinks: boolean;
     version: string;
+    warnedAboutNC: boolean;
     enableMarkdownProcessor: boolean;
     injectColor: boolean;
     parseTitles: boolean;

src/main.ts

@@ -114,6 +114,7 @@ const DEFAULT_APP_SETTINGS: AdmonitionSettings = {
     syntaxHighlight: false,
     copyButton: false,
     version: "",
+    warnedAboutNC: false,
     autoCollapse: false,
     defaultCollapseType: "open",
     syncLinks: true,
@@ -149,13 +150,8 @@ export default class ObsidianAdmonition extends Plugin {
     }
 
     async loadSettings() {
-        let data = Object.assign(
-            {},
-            DEFAULT_APP_SETTINGS,
-            await this.loadData()
-        );
-
-        this.data = data;
+        const loaded: AdmonitionSettings = await this.loadData();
+        this.data = Object.assign({}, DEFAULT_APP_SETTINGS, loaded);
 
         if (
             this.data.userAdmonitions &&
@@ -180,6 +176,16 @@ export default class ObsidianAdmonition extends Plugin {
             }
         }
 
+        if (loaded != null && !this.data.warnedAboutNC) {
+            if (Number(this.data.version.split(".")[0]) < 7) {
+                new Notice(
+                    "Admonitions: Use of the !!!-style Admonitions will be removed in a future version.\n\nPlease update them to the MSDoc-style syntax.",
+                    0
+                );
+            }
+            this.data.warnedAboutNC = true;
+        }
+
         this.admonitions = {
             ...ADMONITION_MAP,
             ...this.data.userAdmonitions