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(scm_m_atbind): First try to find the variable without defining it

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locally; when it has not been found, define it locally.
This commit is contained in:
Marius Vollmer 2001-10-13 15:41:12 +00:00
parent dc187f33fd
commit 311f67823d
1 changed files with 7 additions and 3 deletions
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10
libguile/eval.c
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@ -1135,7 +1135,7 @@ scm_m_atbind (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
SCM top_level = scm_env_top_level (env);
SCM vars = SCM_EOL;
SCM vars = SCM_EOL, var;
SCM exps = SCM_EOL;
SCM_ASSYNT (scm_ilength (x) > 1, scm_s_expression, s_atbind);
@ -1151,8 +1151,12 @@ scm_m_atbind (SCM xorig, SCM env)
for (rest = x; SCM_NIMP (rest); rest = SCM_CDR (rest))
if (SCM_EQ_P (SCM_CAR (sym_exp), SCM_CAR (SCM_CAR (rest))))
scm_misc_error (s_atbind, scm_s_duplicate_bindings, SCM_EOL);
vars = scm_cons (scm_sym2var (SCM_CAR (sym_exp), top_level, SCM_BOOL_T),
vars);
/* The first call to scm_sym2var will look beyond the current
module, while the second call wont. */
var = scm_sym2var (SCM_CAR (sym_exp), top_level, SCM_BOOL_F);
if (SCM_FALSEP (var))
var = scm_sym2var (SCM_CAR (sym_exp), top_level, SCM_BOOL_T);
vars = scm_cons (var, vars);
exps = scm_cons (SCM_CADR (sym_exp), exps);
}
return scm_cons (SCM_IM_BIND,