Re: [cc65] Common macros for dirent.d_type

On Saturday 07 July 2012, you wrote:
> On 2012-07-07, at 05:13, Groepaz wrote:
> > On Friday 06 July 2012, you wrote:
> >> CBM DOS filetypes are similar in function to beloved msdos filename
> >> extensions, aren't they?
> > 
> > not at ALL.
> 
> Why? They are both part of metadata of the file. They both suggest what the
> content may be. They both suggest what you might do with the file. They
> both impose some restrictions on how they are handled by default...

yet every program i remember that determines what files on a disk it can use 
for whatever, does that by looking at the filename (except geos maybe? :)). 
the filetype is always implied.

> >> Why then examples in the books about programming data access using
> >> sequential files uses SEQ files? Do you think the authors were stupid?
> > 
> > they were making examples for TEXT files.
> 
> Which might be the most common / easiest to explain type of use. Yet I
> don't recall any of them saying "don't use SEQ for anything else than
> textual data". It is rather just plain natural to use SEQ when it comes to
> sequential DATA. Which is BTW the same what CBM DOS does when opening file
> for writing with appropriate secondary address! I admit that for a long
> moment I was fooled by your argument that "BASIC creates PRG by default".
> This is not true as Andre pointed out. It happens only when you use
> channel# 1 (aka sec addr 1), using which is against the rules set in 1541
> manual for example:
> 
> FORMAT FOR OPENING A SEQUENTIAL FILE:
>    OPEN file#, device#, channel#, "0:name,type,direction"
> [...] The channel# is a data channel, number 2 through 14 [...]
> 
> Which IMHO takes away the only valid point I thought you had but - OK -
> seems that we keep having different opinions on this matter.

well, as i said, its not so much about what is specified somewhere, but what 
ppl did since 1985. and as for that, "SEQ file" has even become a synonym for 
"petsci text, maybe with C/G graphics" in large parts of the commodore world. 
there is a reason for why eg jiffy dos even has a wedge command to display seq 
files as text - it was incredibly common at some point.

-- 

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<Claudia Roth, Bündnis 90/Die Grünen>

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