Add Markdown to Post Format command and fix non-breaking space before period

- New markdownToLinkedIn() function converts Markdown to LinkedIn/Facebook-ready text:
  ## headings → Unicode bold, **bold** → Unicode bold, _italic_ → Unicode italic,
  - list items → em-dash bullets; blank lines and heading spacing handled correctly
- New "Convert Markdown to Post Format" command registered in commands.ts
- Fix space-before-period cleanup to also strip U+00A0 (non-breaking space),
  which Obsidian inserts after bold/formatted text (/ \./g → /[ \u00A0]\./g)
- Update README to document the new command and updated function list

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

README.md

@@ -12,6 +12,7 @@ An [Obsidian](https://obsidian.md) plugin that transforms selected text into Uni
 - **Convert List Bullets to Em Dash** — prefixes every selected line with `— `, stripping any leading `* ` marker first
 - **Convert List to Numbered (Slash)** — numbers every selected line as `1/ item`, `2/ item`, ..., stripping any leading `* ` marker first
 - **Convert List to Numbered (Parentheses)** — numbers every selected line as `(1) item`, `(2) item`, ..., stripping any leading `* ` marker first
+- **Convert Markdown to Post Format** — converts a Markdown selection to LinkedIn/Facebook-ready text: `##` headings → bold, `**bold**` → Unicode bold, `_italic_` → Unicode italic, `- ` list items → `— ` em-dash bullets
 - Non-mapped characters (punctuation, spaces, emoji, etc.) are passed through unchanged
 
 ## Usage
@@ -27,6 +28,7 @@ An [Obsidian](https://obsidian.md) plugin that transforms selected text into Uni
    - **Convert List Bullets to Em Dash** — prefixes every line with `— ` (strips `* ` if present)
    - **Convert List to Numbered (Slash)** — numbers every line as `1/ item`, `2/ item`, ... (strips `* ` if present)
    - **Convert List to Numbered (Parentheses)** — numbers every line as `(1) item`, `(2) item`, ... (strips `* ` if present)
+   - **Convert Markdown to Post Format** — converts Markdown to LinkedIn/Facebook-ready text (headings, bold, italic, lists)
 
 The selected text is replaced in place.
 
@@ -57,8 +59,8 @@ npm run lint    # ESLint check
 | File | Purpose |
 |------|---------|
 | `src/unicode-maps.ts` | Builds character lookup maps from Unicode code point ranges |
-| `src/formatter.ts` | `transformText(text, style)`, `cleanText(text)`, and `bulletToEmdash(text)` — text transformation functions |
-| `src/commands.ts` | Registers the eight editor commands with the Obsidian plugin API |
+| `src/formatter.ts` | `transformText`, `cleanText`, `bulletToEmdash`, `bulletToArrow`, `numberedListSlash`, `numberedListParens`, `markdownToLinkedIn` — text transformation functions |
+| `src/commands.ts` | Registers the nine editor commands with the Obsidian plugin API |
 | `src/main.ts` | Plugin entry point — calls `registerCommands` on load |
 
 ### Unicode blocks used

src/commands.ts

@@ -1,5 +1,5 @@
 import { Plugin } from "obsidian";
-import { transformText, cleanText, bulletToEmdash, bulletToArrow, numberedListSlash, numberedListParens, FormatStyle } from "./formatter";
+import { transformText, cleanText, bulletToEmdash, bulletToArrow, numberedListSlash, numberedListParens, markdownToLinkedIn, FormatStyle } from "./formatter";
 
 function addFormatCommand(plugin: Plugin, style: FormatStyle, name: string) {
     plugin.addCommand({
@@ -68,4 +68,14 @@ export function registerCommands(plugin: Plugin): void {
             }
         },
     });
+    plugin.addCommand({
+        id: "unicode-formatter:markdown-to-linkedin",
+        name: "Convert Markdown to Post Format",
+        editorCallback: (editor) => {
+            const selection = editor.getSelection();
+            if (selection) {
+                editor.replaceSelection(markdownToLinkedIn(selection));
+            }
+        },
+    });
 }

src/formatter.ts

@@ -46,3 +46,54 @@ export function numberedListParens(text: string): string {
         return `(${n}) ${content}`;
     }).join("\n");
 }
+
+export function applyInlineMarkdown(text: string): string {
+    return text.replace(/\*\*(.+?)\*\*|_(.+?)_/g, (_match, bold, italic) => {
+        if (bold !== undefined) return transformText(bold, "bold");
+        return transformText(italic, "italic");
+    });
+}
+
+export function markdownToLinkedIn(text: string): string {
+    const lines = text.split("\n");
+    const output: string[] = [];
+    let pendingBlanks = 0;
+    let skipNextBlanks = false;
+    let inListContext = false;
+
+    for (const line of lines) {
+        if (line.trim() === "") {
+            if (!skipNextBlanks) pendingBlanks++;
+            continue;
+        }
+
+        skipNextBlanks = false;
+
+        if (line.startsWith("## ")) {
+            for (let i = 0; i < pendingBlanks; i++) output.push("");
+            pendingBlanks = 0;
+            inListContext = false;
+            const headingText = line.slice(3);
+            output.push(transformText(applyInlineMarkdown(headingText), "bold") + "  ");
+            skipNextBlanks = true;
+            continue;
+        }
+
+        if (line.startsWith("- ")) {
+            if (!inListContext) {
+                for (let i = 0; i < pendingBlanks; i++) output.push("");
+            }
+            pendingBlanks = 0;
+            output.push("— " + applyInlineMarkdown(line.slice(2)) + "  ");
+            inListContext = true;
+            continue;
+        }
+
+        for (let i = 0; i < pendingBlanks; i++) output.push("");
+        pendingBlanks = 0;
+        inListContext = false;
+        output.push(applyInlineMarkdown(line));
+    }
+
+    return output.join("\n").replace(/[ \u00A0]\./g, ".").trimEnd();
+}