ossp-pkg/var/var.pod 1.32 -> 1.33
--- var.pod 2002/03/08 12:55:52 1.32
+++ var.pod 2002/05/23 09:13:20 1.33
@@ -382,6 +382,7 @@
This is a pointer to the location where the callback function should
store the pointer to the resolved value of the variable.
+Returning an empty value requires this pointer to be non-NULL otherwise it is interpreted as not expandable.
=item size_t *I<val_len>
@@ -407,6 +408,11 @@
=back
+*cppOut = NULL; returning NULL with size/out=0 means not expandable and keeps the current value
+*cppOut = (char *)mallocex(0); returning any freeable pointer with size/out=0 means empty value
+*pnOutsize = 0;
+*pnOut = 0;
+
The return code of the lookup function B<cb> is interpreted by
B<var_expand> according to the following convention: C<VAR_OK> means
success, that is, the contents of the variable has been resolved
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