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Port identity function to rust #329

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merged 2 commits into from Sep 28, 2017
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@@ -200,6 +200,9 @@ pub use editfns::Feolp;
// Used in minibuffer.c
pub use windows::Fwindow_minibuffer_p;

// Used in term.c, dired.c
pub use objects::Fidentity;

extern "C" {
fn defsubr(sname: *const Lisp_Subr);
}
@@ -266,6 +269,7 @@ pub extern "C" fn rust_init_syms() {
defsubr(&*objects::Seql);
defsubr(&*objects::Sequal);
defsubr(&*objects::Sequal_including_properties);
defsubr(&*objects::Sidentity);
defsubr(&*symbols::Ssymbolp);
defsubr(&*symbols::Ssymbol_name);
defsubr(&*symbols::Sfboundp);
@@ -52,3 +52,9 @@ fn equal_including_properties(o1: LispObject, o2: LispObject) -> LispObject {
};
LispObject::from_bool(res)
}

/// Return the argument unchanged.
#[lisp_fn]
fn identity(arg: LispObject) -> LispObject {
arg
}
@@ -44,14 +44,6 @@ along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
enum equal_kind { EQUAL_NO_QUIT, EQUAL_PLAIN, EQUAL_INCLUDING_PROPERTIES };
bool internal_equal (Lisp_Object, Lisp_Object, enum equal_kind, int, Lisp_Object);

DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0,
doc: /* Return the argument unchanged. */
attributes: const)
(Lisp_Object arg)
{
return arg;
}

/* Random data-structure functions. */

DEFUN ("compare-strings", Fcompare_strings, Scompare_strings, 6, 7, 0,
@@ -3854,7 +3846,6 @@ that disables the use of a file dialog, regardless of the value of
this variable. */);
use_file_dialog = 1;

defsubr (&Sidentity);
defsubr (&Scompare_strings);
defsubr (&Sstring_version_lessp);
defsubr (&Sstring_collate_lessp);