fix(scriptlet): maintain code whitespace

Author: johnlindquist

src/core/scriptlets.test.ts

@@ -1700,3 +1700,20 @@ echo "dummy"
   const scriptlets = await parseMarkdownAsScriptlets(markdown, dummyFilePath)
   t.is(scriptlets[0].kenv, 'test')
 })
+
+ava("parseMarkdownAsScriptlets preserves whitespace in Python scripts", async (t) => {
+  const markdown = `
+## Python Test
+\`\`\`python
+with open('~/hello-python.txt', 'w') as f:
+    f.write('Hello from Python!')
+\`\`\`
+`.trim()
+
+  const scripts = await parseMarkdownAsScriptlets(markdown)
+  t.is(scripts.length, 1)
+  t.is(scripts[0].name, "Python Test")
+  t.is(scripts[0].tool, "python")
+  t.is(scripts[0].scriptlet, `with open('~/hello-python.txt', 'w') as f:
+    f.write('Hello from Python!')`)
+})

src/core/scriptlets.ts

@@ -186,7 +186,7 @@ export let parseMarkdownAsScriptlets = async (markdown: string, filePath?: strin
     }
 
     if (parsingValue && currentScriptlet) {
-      currentScriptlet.scriptlet = currentScriptlet.scriptlet ? `${currentScriptlet.scriptlet}\n${line}` : line
+      currentScriptlet.scriptlet = currentScriptlet.scriptlet ? `${currentScriptlet.scriptlet}\n${untrimmedLine}` : untrimmedLine
     }
 
     if (parsingMetadata) {