Re: [[ is being treated as a pattern in the command/reserved word position.

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

On Mar 28,  5:55pm, Eric Cook wrote:
}
} % print $ZSH_PATCHLEVEL; emulate sh -c '[[ a == a ]]'
} zsh-5.0.7-362-gab40656
} zsh: command not found: [[
} 
} Did that behavior change?

Aha.  That makes more sense.

The '[[' reserved word is handled a special kind of built-in alias [*]
and the change to POSIX_ALIASES handling caused that to be disabled.

This will take a bit of thought.


[*] Not literally, but the alias expansion code is where '[[' is noted
and the lexer changed into "parsing a conditional" state.