Unable to replace text with special character when the search regex contains a word boundary

spec/text-buffer-spec.js

@@ -0,0 +1,14 @@
+const path = require('path')
+const TextBuffer = require('../src/text-buffer')
+
+describe('when a buffer is already open', () => {
+  it('replaces foo( with bar( using /\bfoo\\(\b/gim', () => {
+    const filePath = path.join(__dirname, 'fixtures', 'sample.js')
+    const buffer = new TextBuffer()
+    buffer.setPath(filePath)
+    buffer.setText('foo(x)')
+    buffer.replace(/\bfoo\(\b/gim, 'bar(')
+
+    expect(buffer.getText()).toBe('bar(x)')
+  })
+})

src/text-buffer.js

@@ -1608,8 +1608,8 @@ class TextBuffer {
     let replacements = 0
 
     this.transact(() => {
-      return this.scan(regex, function ({matchText, replace}) {
-        replace(matchText.replace(regex, replacementText))
+      return this.scan(regex, function ({replace}) {
+        replace(replacementText)
         return replacements++
       })
     })