Add "Remove Unicode Formatting" command to clean Unicode text back to ASCII

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/commands.ts

@@ -1,5 +1,5 @@
 import { Plugin } from "obsidian";
-import { transformText, FormatStyle } from "./formatter";
+import { transformText, cleanText, FormatStyle } from "./formatter";
 
 function addFormatCommand(plugin: Plugin, style: FormatStyle, name: string) {
     plugin.addCommand({
@@ -18,4 +18,14 @@ export function registerCommands(plugin: Plugin): void {
     addFormatCommand(plugin, "bold",        "Format as Unicode Bold");
     addFormatCommand(plugin, "italic",      "Format as Unicode Italic");
     addFormatCommand(plugin, "bold-italic", "Format as Unicode Bold Italic");
+    plugin.addCommand({
+        id: "unicode-formatter:clean",
+        name: "Remove Unicode Formatting",
+        editorCallback: (editor) => {
+            const selection = editor.getSelection();
+            if (selection) {
+                editor.replaceSelection(cleanText(selection));
+            }
+        },
+    });
 }

src/formatter.ts

@@ -1,4 +1,4 @@
-import { BOLD_MAP, ITALIC_MAP, BOLD_ITALIC_MAP } from "./unicode-maps";
+import { BOLD_MAP, ITALIC_MAP, BOLD_ITALIC_MAP, UNICODE_TO_ASCII_MAP } from "./unicode-maps";
 
 export type FormatStyle = "bold" | "italic" | "bold-italic";
 
@@ -12,3 +12,7 @@ export function transformText(text: string, style: FormatStyle): string {
     const map = STYLE_MAPS[style];
     return [...text].map(ch => map[ch] ?? ch).join("");
 }
+
+export function cleanText(text: string): string {
+    return [...text].map(ch => UNICODE_TO_ASCII_MAP.get(ch) ?? ch).join("");
+}

src/unicode-maps.ts

@@ -24,3 +24,10 @@ export const ITALIC_MAP: Record<string, string> = buildMap(0x1D608, 0x1D622);
 
 // Sans-Serif Bold-Italic: U+1D63C–U+1D655 (upper), U+1D656–U+1D66F (lower)
 export const BOLD_ITALIC_MAP: Record<string, string> = buildMap(0x1D63C, 0x1D656);
+
+// Reverse map: Unicode symbol → ASCII character
+export const UNICODE_TO_ASCII_MAP: Map<string, string> = new Map(
+    [BOLD_MAP, ITALIC_MAP, BOLD_ITALIC_MAP].flatMap(m =>
+        Object.entries(m).map(([ascii, unicode]) => [unicode, ascii] as [string, string])
+    )
+);