diff options
Diffstat (limited to 'src/eval.c')
| -rw-r--r-- | src/eval.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/eval.c b/src/eval.c index f625258229e..45effae295c 100644 --- a/src/eval.c +++ b/src/eval.c @@ -807,8 +807,16 @@ usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) sym = Fcar (args); if (SYMBOL_CONSTANT_P (sym)) - error ("Constant symbol `%s' specified in defvar", - SDATA (SYMBOL_NAME (sym))); + { + /* For updward compatibility, allow (defvar :foo (quote :foo)). */ + tem = Fcar (Fcdr (args)); + if (! (CONSP (tem) + && EQ (XCAR (tem), Qquote) + && CONSP (XCDR (tem)) + && EQ (XCAR (XCDR (tem)), sym))) + error ("Constant symbol `%s' specified in defvar", + SDATA (SYMBOL_NAME (sym))); + } tail = Fcdr (args); if (!NILP (Fcdr (Fcdr (tail)))) |