ufl to latex support broken in several ways

Consider the following script, which attempts to make a PDF file from the UFL representation of a functional.

from dolfin import *

mesh = UnitSquareMesh(100, 100)
V = VectorFunctionSpace(mesh, "CG", 1) + VectorFunctionSpace(mesh, "Bubble", 3)
P = FunctionSpace(mesh, "CG", 1)
C = FunctionSpace(mesh, "CG", 1)
R = FunctionSpace(mesh, "R", 0)
Z = MixedFunctionSpace([V, P, C, R, R]) # One to ensure that p*dx == 0, the other is the Lagrange multiplier to ensure rho*dx == input

mu       = Constant(1.0e-3)
q        = Constant(0.1)
alphabar = Constant(2.5e4)
gamma    = Constant(0.5)

def alpha(rho):
  return alphabar * q * ((q + 1)/(rho + q) - 1)

z = Function(Z)
(u, p, rho, p0, lmbda) = split(z)

J = ( 0.5 * inner(grad(u), grad(u))*dx
    - inner(p, div(u))*dx
    - inner(p0, p)*dx     )

if rho is not None:
  J = J + 0.5 * alpha(rho) * inner(u, u)*dx

J = ( J
    - mu * ln(rho*(1 - rho))*dx
    + inner(lmbda, rho - gamma)*dx)

from ufl.algorithms.ufl2latex import *
forms = [J]
latex = forms2latexdocument(forms, 'dummy.ufl', compile=False)
write_file('J.tex', latex)
pdflatex('J.tex', 'J.pdf', flags=None)

A few issues.

(a) I had to change

form = preprocess(form)
form_data = form.form_data()

to

form_data = preprocess(form)

in ufl/algorithms/ufl2latex.py; it appears that the output of preprocess has changed to become the desired form data, rather than a form with the form data attached.

(b) tex2pdf calls pdflatex(latexfilename, pdffilename)

but that gives an error now:

TypeError: pdflatex() takes exactly 3 arguments (2 given)

Looking at the definition of pdflatex,

def pdflatex(latexfilename, pdffilename, flags): # TODO: Options for this.
    "Execute pdflatex to compile a latex file into pdf."
    flags = "-file-line-error-style -interaction=nonstopmode"

It takes in a third argument and immediately ignores it.

(c)

The compilation of the .tex failed --- in the .log, it gives lots of errors like

./J.tex:17: Missing $ inserted.

<inserted text>⋅
                $
l.17 \end{align}
⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

./J.tex:17: Extra }, or forgotten $.

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