bug#28910: 27.0.50; Equivalent to __FILE__

[Stefan Monnier]

Phillip Lord [2017-11-02 17:53:56] wrote:
> Philipp Stephani <p.stephani2@gmail.com> writes:
>> Stefan Monnier <monnier@iro.umontreal.ca> schrieb am Fr., 20. Okt. 2017 um
>> 14:42 Uhr:
>>> We should provide some `current-source-file-name` function which macros
>>> can use to find get the name of the source file in which they were invoked.
>> `f-this-file' from the `f' package is some prior art, but I guess it also
>> doesn't work correctly with macros.
> emacs-load-relative uses the name "__FILE__" for the same thing.

Emacs's `master` now has the `macroexp-file-name` function which
provides this functionality.  So I guess `emacs-load-relative` could now
redefine __FILE__ as

    (defmacro __FILE__ () (macroexp-file-name))

tho oddly it seems that it defines `__FILE__` as a function rather than
a macro, so maybe it should be

    (defalias '__FILE__ #'macroexp-file-name)

but that doesn't match the semantics I expect from something called
`__FILE__`.

In any case, my original request is now satisfied, so I'm closing this.


        Stefan