Question about 'RegexDefaultOptions'

[Christophe Jaillet]

Hi,
I've just noticed that 'RegexDefaultOptions' introduced in 2.4.30 was 
un-documented. While fixing it, I had a question.

I'm puzzled by the 'EXTENDED' option. Does it have any impact?

AP_DECLARE(int) ap_regcomp_default_cflag_by_name(const char *name)
{
[...]
    else if (ap_cstr_casecmp(name, "EXTENDED") == 0) {
        cflag = AP_REG_EXTENDED;
    }

    return cflag;
}

but in ap_regex.h:
#define AP_REG_EXTENDED (0)  /**< unused */

CJ