[patch] enable unload-module

Moved to xemacs-beta for discussion. Andrew> This patch is against 21.4.4. It removes the #ifdef around Andrew> the unload-module function. Besides the fact that Andrew> DANGEROUS_NASTY_SCARY_MONSTER isn't even a configure Andrew> option and is never defined anywhere, If I understand the issues correctly, there's good reason for that, and this is unlikely to ever go in to 21.4. Andrew> this code for unloading modules is incredibly useful and Andrew> shouldn't be #ifdef'd out. I can see where it would be useful for module _developers_, but for users in general Lisp must be _safe_. If you have an application that requires this capability, I'd suggest a configure option for 21.5. Or, if what you really want is the reinit capability, why not implement that directly? That might be safe. Define a global "in_ell_reinit" or some such and make the symbols.c assert "(in_ell_reinit || ...)". The submitted patch looks very unsafe. [...] Andrew> So, we add a warning: if you call unload-module, don't Andrew> call any functions or eval any variables that come from Andrew> the module. And if I do, what happens? Do I get a crash? Data loss? Convince me I won't. -- University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Institute of Policy and Planning Sciences Tel/fax: +81 (298) 53-5091 _________________ _________________ _________________ _________________ What are those straight lines for? "XEmacs rules."