TextBuffer.on is deprecated.

[jamestt]

Use TextBuffer::onWillSave instead. A TextBuffer instance is no longer provided as a callback argument.

TextBuffer.on (/opt/atom/resources/app.asar/node_modules/text-buffer/lib/text-buffer.js:1179:16)
Atom.subscribeWith (/opt/atom/resources/app.asar/node_modules/emissary/lib/subscriber.js:28:32)
Atom.subscribe (/opt/atom/resources/app.asar/node_modules/emissary/lib/subscriber.js:63:21)
MarkdownFormat.handleSave (/home/jamestt/.atom/packages/markdown-format/lib/markdown-format.coffee:13:9)

[Dmitri Shuralyov]

Duplicate of #18.