[pbijdens@students.cs.ruu.nl: Re: bf wrappers and error handling]

• Date: Tue, 11 Mar 1997 10:28:58 -0600
• From:
  "Robert J. Brown" <rj@eli.wariat.org>

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From: Pieter-Bas IJdens <pbijdens@students.cs.ruu.nl>
Subject: Re: bf wrappers and error handling
To: abakun@waitress.scinc.com (Andrew Bakun)
Date: Tue, 11 Mar 1997 07:56:39 PST
Cc: moo-cows@parc.xerox.com
In-Reply-To: <199703111559.JAA18808@waitress.scinc.com> from "Andrew Bakun" at Mar 11, 97 09:59:00 am
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>Because if you don't write your code NOW to use error catching, then when a
>server version is released in which the d flag doesn't exist or doesn't work
>like it does now, your code will break.
>Every verb in your entire database should be +d and should be using the
>error handling statements.  Leaving some verbs +d and some -d means that 
>how errors are treated are not consistant, and when I write code which is
>trying to catch an error and a error is returned instead, I need to 
>handle both cases, both getting the error as the return value and catching
>it if raised.

Maybe you are right here, but my only point was that the bf_ wrappers should
automaticaly get the d fag from their callers, so that it doesn't matter if
you are using a wrapper or not, basicaly just like the builtins already do.
This way it doesn't matter if you are using a wrapper or not, and the code
that relies on running -d will not suddenly break when you use a wrapper.
Take the old @program code for example, if you wrap set_verb_code and make it
+d it will suddenly give a traceback for E_PERM. That's quite inconsistent
realy, -d code giving tracebacks. (Making it -d has other disadvantages).

  Pieter-Bas
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