<p>Scintilla’s Python lexer has a property <code>lexer.python.keywords2.no.sub.identifiers</code> which, when set to 1, prevents it from highlighting attributes as builtins.</p>
<p>In other words, with this property set to 1, a bare <code>file</code> is highlighted, because it’s a Python builtin, but the word <code>file</code> in <code>obj.file</code> is not highlighted, because it’s an unknown attribute of <code>obj</code>.</p>
<p>This is almost always the desired behavior and it should be the default. If someone has a peculiar codebase where <code>obj.file</code> is the same as the builtin <code>file</code>, they can flip the switch back in their <code>filetypes.python</code>.</p>

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