Nonstandard operator precedence

[ngaya-ll]

In most programming languages, operators are grouped into families having equal precedence. In Jinja2's parser, each operator has its own precedence level. This affects the associativity of some expressions.

For example, in Python and Java, *,/, //, and % all have the same precedence. In Jinja2, these operators have different precedence. This means that a given expression may yield different results from expected when evaluated in a Jinja2 template (see example). Jinja2 should follow the common convention to avoid "gotchas" and unintuitive behavior.

Python's operator precedence is documented here. Java's operator precedence is described here.

Example:

{{ 10 * 1 // 2 }}

Expected result:

5

Actual result:

0

[jeffwidman]

Dupe of #119