[Coco] Valid file names for Disk BASIC

[Salvador Garcia]

Thank you all. All explanations were very clear. I am not sure what to make out of the "zero" not allowed indication. The only reason why this could be is that long ago the zero and oh were similar (or same) character, so there were instances where the "0" char was not allowed to avoid confusion, but does not make sense for a modern era computer. Since the "0" char has been used successfully, I can easily dismiss it as it having some other meaning. Again thanks! The Unraveled explanation was particularly interesting. Regards, Salvador
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-----Original Message-----
From: William Astle <lost at l-w.ca>
To: coco <coco at maltedmedia.com>
Sent: Thu, Apr 7, 2016 11:36 am
Subject: Re: [Coco] Valid file names for Disk BASIC

On 2016-04-07 10:26, tim lindner wrote:> On Thu, Apr 7, 2016 at 9:17 AM, William Astle <lost at l-w.ca> wrote:>> 2. If the provided name is 2 or more characters long *and* the second>> character is a colon *and* the first character is 0, 1, 2, or 3, then that>> is interpreted as a drive number and parsing begins after the colon.>> Does this imply that 0:, 1:, 2:, 3: are not legal at the beginning of> a filename?It would, yes.  However, ":" is not valid inside the filename anyway so files won't have ":" in the name. (The colon always introduces a drive number or causes an error.)You *can* reference a file called "0", "1", "2", or "3" with a drive number if you specify the extension, though. Anything that moves the colon away from the second position in the string. So "0.:2" would reference a file called "0" with a blank extension on drive 2 while "0:2" would reference a file called "2" with the default extension on drive 0. And "0:2:0" should trigger an error.-- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco