Fix export of parameterized LaTeX environments to HTML/SVG

[Rudolf Adamkovič]

The Org manual states that LaTeX fragments are

  Environments of any kind. The only requirement is that the ‘\begin’
  statement appears on a new line, preceded by only whitespace.

yet, the Org document

  #+OPTIONS: tex:dvisvgm

  \begin{array}{cc|c}
    P & Q & P \iff Q \\
    \hline
    0 & 0 & 1 \\
    0 & 1 & 0 \\
    1 & 0 & 0 \\
    1 & 1 & 1 \\
  \end{array}

exports to HTML with

  cc|c

visible (and a broken array).

More generally, LaTeX environments

  \begin{ENVIRONMENT}{OPTIONS}

that include some

  {OPTIONS}

do not export to HTML well.

Rudy
-- 
“Those who cannot remember the past are condemned to repeat it.”  ---
George Santayana, Life of Reason: Reason in Common Sense, 1905

Rudolf Adamkovič <rudolf@adamkovic.org> [he/him]
http://adamkovic.org