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Diffstat (limited to 'doc/lispref/records.texi')
| -rw-r--r-- | doc/lispref/records.texi | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/doc/lispref/records.texi b/doc/lispref/records.texi index 822fd2bf36e..9a5d900cfc9 100644 --- a/doc/lispref/records.texi +++ b/doc/lispref/records.texi @@ -26,7 +26,8 @@ evaluating it is the same record. This does not evaluate or even examine the slots. @xref{Self-Evaluating Forms}. @menu -* Record Functions:: Functions for records. +* Record Functions:: Functions for records. +* Backward Compatibility:: Compatibility for cl-defstruct. @end menu @node Record Functions @@ -98,3 +99,17 @@ the copied record, are also visible in the original record. @end group @end example @end defun + +@node Backward Compatibility +@section Backward Compatibility + + Code compiled with older versions of @code{cl-defstruct} that +doesn't use records may run into problems when used in a new Emacs. +To alleviate this, Emacs detects when an old @code{cl-defstruct} is +used, and enables a mode in which @code{type-of} handles old struct +objects as if they were records. + +@defun cl-old-struct-compat-mode arg +If @var{arg} is positive, enable backward compatibility with old-style +structs. +@end defun |