Using \newline instead of \\ causes rendering failure

[Strilanc]

This latex input:

a = b \newline c =d

produces this mathjax error output:

But it should produce the same output as this input:

a = b \\ c =d

which produces:

Somewhat surprisingly, \newline starts working when inside of bmatrix blocks or aligned blocks.

[dpvc]

Currently in MathJax, \newline is equivalent to \cr, and so it can only be used inside alignments. If you disabled the noErrors extension, you would get the message "Misplaced \newline", indicating the problem is that the \newline is used in a location where it is not allowed.

Of course, in actual LaTeX, neither \\ nor \newline produce line breaks in math mode, and so what these "should" do is debatable. But I suspect that for the purposes of MathJax, producing the actual line break would be a reasonable result.

[dpvc]

In testsuite:

LaTeXToMathML/issue2141.html