E,e format specifier is not supported

This will have be postponed a bit

Asked John Chapman to resolve this

To fix, combine the fix for Ticket 555 with changing the check in tango.text.convert.Layout.floater from:

                if (parse2(format, places) is 'e')
                    scientific = true;

To:

                if ((parse2(format, places) ^ ('a' - 'A')) is 'e')
                    scientific = true;

Or whatever else to check for both upper and lower case 'e'.

Replying to Deewiant:

                if ((parse2(format, places) ^ ('a' - 'A')) is 'e')

Er, make that

                if ((parse2(format, places) | ('a' ^ 'A')) is 'e')

In addition to the upper case check (forget about Ticket #555), there's a problem with the "round up a bit" part in tango.text.convert.Float.format:

        // don't scale if zero
        if (x > 0.0)
           {
           // round up a bit (should do even/odd test?)
           x += 0.5 / pow10 (decimals);

I'm not even sure why the rounding is there, but I'm assuming it's important so I'd just add "if (!scientific)" prior to it, otherwise it messes stuff up completely with small values, for instance:

	Stdout.formatln("{:e4}", 0.01); // outputs 0.1005e-01
	Stdout.formatln("{:e4}", 0.0001); // outputs 0.1500e-03
	Stdout.formatln("{:e}", 0.0001); // outputs 0.51e-02, note: same value as above

Other than that, as far as I can tell, everything's fine.

fixed in [2927]

Thanks, larsivi