New __FILE_DIR__ trait?

[rikki cattermole via Digitalmars-d]

On 22/07/2016 2:08 PM, Jonathan Marler wrote:
> I've got some batch scripts I wanted to convert to D.  I'd like users to
> run them using rdmd, so it's obvious where the source code lives and
> easy to modify.  The problem is that the batch scripts I want to convert
> rely on the %~dp0 variable, which contains the path to the batch script
> itself.  Note that this variable is different then the current
> directory.  I haven't been able to find a nice way to do this in D.
> (Note that thisExePath won't work because rdmd compiles the code to a
> temporary directory, which makes sense.)
>
> Having known about the special __FILE__ and __LINE__ traits, I figured
> there might be a trait for the file directory as well, but it appears
> there is none.  I'd like to see what people think about adding a new
> trait for this.  Maybe something like __FILE_DIR__?  This would contain
> the directory of the source-code file it appears in.  Also if this trait
> was added, one could argue that a trait containing the path and the
> filename should also be added, maybe something like __FILE_FULL_PATH__?
>
>
> P.S. If you know of an existing solution to this problem please let me
> know.

Temporary work around:
Write a program that on calls to rdmd but before that it appends an enum 
called that, on after it removes it by shrinking the file.