Commit ace40a69 authored by Richard M. Stallman's avatar Richard M. Stallman

(Vinvocation_directory): New var.

(init_cmdargs): Set up its value.
(Finvocation_directory): New function.
(main): Call init_buffer, init_callproc and init_cmdargs
before init_lread.
(syms_of_emacs): Install the function, and protect the variable.
parent ddc61f46
......@@ -59,6 +59,9 @@ Lisp_Object Vcommand_line_args;
names discarded. */
Lisp_Object Vinvocation_name;
/* The directory name from which Emacs was invoked. */
Lisp_Object Vinvocation_directory;
/* Hook run by `kill-emacs' before it does really anything. */
Lisp_Object Vkill_emacs_hook;
......@@ -159,6 +162,17 @@ init_cmdargs (argc, argv, skip_args)
register int i;
Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0]));
Vinvocation_directory = Ffile_name_directory (build_string (argv[0]));
/* If we got no directory in argv[0], search PATH to find where
Emacs actually came from. */
if (NILP (Vinvocation_directory))
{
Lisp_Object found;
int yes = openp (Vexec_path, Vinvocation_name,
"", &found, 1);
if (yes)
Vinvocation_directory = Ffile_name_directory (found);
}
Vcommand_line_args = Qnil;
......@@ -178,6 +192,14 @@ Any directory names are omitted.")
return Fcopy_sequence (Vinvocation_name);
}
DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
0, 0, 0,
"Return the directory name in which the Emacs executable was located")
()
{
return Fcopy_sequence (Vinvocation_directory);
}
#ifdef VMS
#ifdef LINK_CRTL_SHARE
......@@ -469,10 +491,12 @@ main (argc, argv, envp)
until calling init_callproc. */
set_process_environment ();
init_buffer (); /* Init default directory of main buffer */
init_callproc (); /* Must precede init_cmdargs and init_sys_modes. */
init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
init_lread ();
init_cmdargs (argc, argv, skip_args); /* Create list Vcommand_line_args */
init_buffer (); /* Init default directory of main buffer */
if (!noninteractive)
{
#ifdef VMS
......@@ -481,7 +505,6 @@ main (argc, argv, envp)
init_display (); /* Determine terminal type. init_sys_modes uses results */
}
init_keyboard (); /* This too must precede init_sys_modes */
init_callproc (); /* And this too. */
#ifdef VMS
init_vmsproc (); /* And this too. */
#endif /* VMS */
......@@ -863,6 +886,7 @@ syms_of_emacs ()
defsubr (&Skill_emacs);
defsubr (&Sinvocation_name);
defsubr (&Sinvocation_directory);
DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
"Args passed by shell to Emacs, as a list of strings.");
......@@ -890,4 +914,6 @@ it to change priority. (Emacs sets its uid back to the real uid.)");
staticpro (&Vinvocation_name);
Vinvocation_name = Qnil;
staticpro (&Vinvocation_directory);
Vinvocation_directory = Qnil;
}
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