bug#21353: 25.0.50; Emacs Trunk (OSX) -- `default-directory` is initially set to "."

[Keith David Bershatsky]

During startup, when Emacs reads 
`.../Emacs.app/Contents/Resources/site-lisp/subdirs.el` in a version of Emacs 
Trunk built on August 22, 2015, the value of the `default-directory` at the top 
of that file is:

"."

During startup, when Emacs reads 
`.../Emacs.app/Contents/Resources/site-lisp/subdirs.el` in prior working 
versions of Emacs Trunk (i.e., from last year), the value of the 
`default-directory` at the top of that file is:

".../Emacs.app/Contents/Resources/site-lisp"

The test can be duplicated by placing the following lines inside 
`.../Emacs.app/Contents/Resources/site-lisp/subdirs.el`

(message "What is the value of the default-directory?:  %s" default-directory)

(if (fboundp 'normal-top-level-add-subdirs-to-load-path)
    (normal-top-level-add-subdirs-to-load-path))

This is true even if I completely remove the entire `lisp` directory.

On my Christmas wish-list is the desire to learn how to "step with a debugger"; 
however, that is presently beyond my limited hobbyist programming abilities.

Keith

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At Wed, 26 Aug 2015 20:12:28 +0300,
Eli Zaretskii wrote:
> 
>  Emacs Trunk (OSX) -- `default-directory` is initially set to "."
> 
> > Date: Wed, 26 Aug 2015 09:39:25 -0700
> > From: Keith David Bershatsky <esq@lawlist.com>
> > 
> > The `default-directory` is initially set to "."
> 
> You mean, in the *scratch* buffer?  That happens in the function
> init_buffer; we get the directory by calling get_current_dir_name.
> Perhaps that function doesn't work well on Darwin?  Can you step with
> a debugger through init_buffer, and see what happens there?