Error when computing indentation in certain cases

[Steve Purcell]

Given

    %script{'data-main' => javascript_path(Rails.env.production? ? "all" : "main"),
            'src' => javascript_path("vendor/require")}

with point in the second line, we get this:

Debugger entered--Lisp error: (no-catch --cl-block-haml-indent-p-- (6 nil))
  throw(--cl-block-haml-indent-p-- (6 nil))
  haml-indent-p()
  haml-compute-indentation()
  haml-indent-line()
  indent-for-tab-command(nil)
  #<subr call-interactively>(indent-for-tab-command nil nil)
  ad-Advice-call-interactively(#<subr call-interactively> indent-for-tab-command nil nil)
  apply(ad-Advice-call-interactively #<subr call-interactively> (indent-for-tab-command nil nil))
  call-interactively(indent-for-tab-command nil nil)
  command-execute(indent-for-tab-command)

I'll investigate & fix in due course.