Console error when using inline bash in Markdown

[blink1073]

Using [email protected], if we add the following to a CodeMirror instance in gfm mode, we get the resulting error:

```bash<RETURN>

markdown.js:801 Uncaught TypeError: state.localMode.indent is not a function
    at Object.indent (markdown.js:801)
    at Object.indent (overlay.js:72)
    at Object.indent (multiplex.js:94)
    at indentLine (codemirror.js:7796)
    at CodeMirror$1.<anonymous> (codemirror.js:8031)
    at CodeMirror$1.indentLine (codemirror.js:3858)
    at codemirror.js:6881
    at runInOp (codemirror.js:3840)
    at newlineAndIndent (codemirror.js:6875)
    at doHandleBinding (codemirror.js:6926)

I believe it is a result of this change, because if I inspect at that point I get the following: