"0 = x" is preparsed very badly

[kcrisman]

sage: preparse("0 = x")
'__tmp__=var("0"); Integer = symbolic_expression(x).function(0)'

This is because 0 = x becomes Integer(0) = x which is interpreted as defining a function Integer in the variable 0.

Observed in this ask.sagemath question.

CC: @slel

Component: user interface

Keywords: preparser

Issue created by migration from https://trac.sagemath.org/ticket/24971

[jdemeyer]

comment:2

This must happen because of double preparsing:

0 = p

becomes

Integer(0) = p

which is interpreted as a function definition of the function Integer in the variable 0.

[slel]

Changed keywords from none to preparser