| 1 | @c -*-texinfo-*- |
| 2 | @c This is part of the GNU Guile Reference Manual. |
| 3 | @c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004 |
| 4 | @c Free Software Foundation, Inc. |
| 5 | @c See the file guile.texi for copying conditions. |
| 6 | |
| 7 | @page |
| 8 | @node Translation |
| 9 | @section Support for Translating Other Languages |
| 10 | |
| 11 | [Describe translation framework.] |
| 12 | |
| 13 | @menu |
| 14 | * Emacs Lisp Support:: Helper primitives for Emacs Lisp. |
| 15 | @end menu |
| 16 | |
| 17 | |
| 18 | @node Emacs Lisp Support |
| 19 | @subsection Emacs Lisp Support |
| 20 | |
| 21 | @deffn {Scheme Procedure} nil-car x |
| 22 | @deffnx {C Function} scm_nil_car (x) |
| 23 | Return the car of @var{x}, but convert it to LISP nil if it |
| 24 | is Scheme's end-of-list. |
| 25 | @end deffn |
| 26 | |
| 27 | @deffn {Scheme Procedure} nil-cdr x |
| 28 | @deffnx {C Function} scm_nil_cdr (x) |
| 29 | Return the cdr of @var{x}, but convert it to LISP nil if it |
| 30 | is Scheme's end-of-list. |
| 31 | @end deffn |
| 32 | |
| 33 | @deffn {Scheme Procedure} nil-cons x y |
| 34 | @deffnx {C Function} scm_nil_cons (x, y) |
| 35 | Create a new cons cell with @var{x} as the car and @var{y} as |
| 36 | the cdr, but convert @var{y} to Scheme's end-of-list if it is |
| 37 | a Lisp nil. |
| 38 | @end deffn |
| 39 | |
| 40 | @deffn {Scheme Procedure} nil-eq x y |
| 41 | Compare @var{x} and @var{y} and return Lisp's t if they are |
| 42 | @code{eq?}, return Lisp's nil otherwise. |
| 43 | @end deffn |
| 44 | |
| 45 | @deffn {Scheme Procedure} null x |
| 46 | @deffnx {C Function} scm_null (x) |
| 47 | Return Lisp's @code{t} if @var{x} is nil in the LISP sense, |
| 48 | return Lisp's nil otherwise. |
| 49 | @end deffn |
| 50 | |
| 51 | |
| 52 | @c Local Variables: |
| 53 | @c TeX-master: "guile.texi" |
| 54 | @c End: |