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(init_cmdargs): Set Vinstallation_directory.

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(syms_of_emacs): staticpro it.
This commit is contained in:
Richard M. Stallman 1994-02-03 19:51:07 +00:00
parent 0736cafe0d
commit 07f4d1231f
1 changed files with 82 additions and 0 deletions
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82
src/emacs.c
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@ -63,6 +63,10 @@ Lisp_Object Vinvocation_name;
/* The directory name from which Emacs was invoked. */
Lisp_Object Vinvocation_directory;
/* The directory name in which to find subdirs such as lisp and etc.
nil means get them only from PATH_LOADSEARCH. */
Lisp_Object Vinstallation_directory;
/* Hook run by `kill-emacs' before it does really anything. */
Lisp_Object Vkill_emacs_hook;
@ -179,6 +183,7 @@ init_cmdargs (argc, argv, skip_args)
int skip_args;
{
register int i;
Lisp_Object name, dir;
Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0]));
Vinvocation_directory = Ffile_name_directory (build_string (argv[0]));
@ -193,6 +198,81 @@ init_cmdargs (argc, argv, skip_args)
Vinvocation_directory = Ffile_name_directory (found);
}
Vinstallation_directory = Qnil;
if (!NILP (Vinvocation_directory))
{
dir = Vinvocation_directory;
name = Fexpand_file_name (Vinvocation_name, dir);
while (1)
{
Lisp_Object tem, lisp_exists, lib_src_exists;
Lisp_Object etc_exists, info_exists;
/* See if dir contains subdirs for use by Emacs. */
tem = Fexpand_file_name (build_string ("lisp"), dir);
lisp_exists = Ffile_exists_p (tem);
if (!NILP (lisp_exists))
{
tem = Fexpand_file_name (build_string ("lib-src"), dir);
lib_src_exists = Ffile_exists_p (tem);
if (!NILP (lib_src_exists))
{
tem = Fexpand_file_name (build_string ("etc"), dir);
etc_exists = Ffile_exists_p (tem);
if (!NILP (etc_exists))
{
tem = Fexpand_file_name (build_string ("info"), dir);
info_exists = Ffile_exists_p (tem);
if (!NILP (info_exists))
{
Vinstallation_directory
= Ffile_name_as_directory (dir);
break;
}
}
}
}
/* See if dir's parent contains those subdirs. */
tem = Fexpand_file_name (build_string ("../lisp"), dir);
lisp_exists = Ffile_exists_p (tem);
if (!NILP (lisp_exists))
{
tem = Fexpand_file_name (build_string ("../lib-src"), dir);
lib_src_exists = Ffile_exists_p (tem);
if (!NILP (lib_src_exists))
{
tem = Fexpand_file_name (build_string ("../etc"), dir);
etc_exists = Ffile_exists_p (tem);
if (!NILP (etc_exists))
{
tem = Fexpand_file_name (build_string ("../info"), dir);
info_exists = Ffile_exists_p (tem);
if (!NILP (info_exists))
{
tem = Fexpand_file_name (build_string (".."), dir);
Vinstallation_directory
= Ffile_name_as_directory (tem);
break;
}
}
}
}
/* If the Emacs executable is actually a link,
next try the dir that the link points into. */
tem = Ffile_symlink_p (name);
if (!NILP (tem))
{
name = tem;
dir = Ffile_name_directory (name);
}
else
break;
}
}
Vcommand_line_args = Qnil;
for (i = argc - 1; i >= 0; i--)
@ -962,6 +1042,8 @@ and only if the Emacs executable is installed with setuid to permit\n\
it to change priority. (Emacs sets its uid back to the real uid.)");
emacs_priority = 0;
staticpro (&Vinstallation_directory);
Vinstallation_directory = Qnil;
staticpro (&Vinvocation_name);
Vinvocation_name = Qnil;
staticpro (&Vinvocation_directory);