cmd: Add helper for 'if' comparison operations evaluation (try 2)

[Octavian Voicu]

2011/11/7 Frédéric Delanoy <frederic.delanoy at gmail.com>:
> +    /* Note: '==' can't be returned by WCMD_parameter since '=' is a separator */
> +    p = paramEnd + 1;
> +    while (*p == ' ' || *p == '\t')
> +      p++;
> +
> +    if (!p || *p != '=' || !(p+1) || *(p+1) != '=')
> +      goto syntax_err;
> +
> +    strcpyW(operator, eqeqW);
> +    p += strlenW(operator);

Hi,

This doesn't look general enough, I'm not sure how you want to handle
the other operators. Wouldn't it be better to just find next space/tab
(skip all non-whitespace chars) then assign the part of the string
separated by whitespace to be the operator? With this approach you
also don't need that syntax check there.

Octavian