isBinary

[FeepingCreature]

On Sunday, 3 September 2023 at 10:11:22 UTC, Vino wrote:
> Hi All,
>
>    Any update as to when the function described in the below 
> ticked would be action-ed, I am more interested in isBinary 
> (check a file whether is is binary file or not)
>
> http://d.puremagic.com/issues/show_bug.cgi?id=9455
>
> From,
> Vino

Those are totally different ideas.

When writing a file, some operating systems support line ending 
conversion. To do that, you explicitly specify that you are 
writing to a text file. Then a "binary file" is just any file 
that is not a text file. However, this is merely a conversion 
process on writing. You cannot discover whether a file is a 
binary file in reverse. At most you can check whether *you 
yourself* opened the file as a binary file.