Number: 1308

Date:  1-Jun-84 15':02':08

Submitter: Sannella.PA

Source: Jeffrey Shulman <SHULMAN@RUTGERS.ARPA>

Subject: Want to NLSETQ I/O errors so no message is printed

Lisp Version: 

Description: '
Return-Path': <SHULMAN@RUTGERS.ARPA>'
Received': from RUTGERS.ARPA by Xerox.ARPA ; 24 MAY 84 08':45':06 PDT'
Date': 24 May 84 11':44':13 EDT'
From': Jeffrey Shulman <SHULMAN@RUTGERS.ARPA>'
Subject': File opening error messages'
To': lispsupport.pa'
cc': SHULMAN@RUTGERS.ARPA'
'
'
	When I open a file (via LEAF) that is already open I will get a'
"Leaf error': Invalid simultaneous access" message printed in the prompt'
window and the system will go into a break.  This is all fine and expected.'
	The problem is I want to trap this error with NO messages printed'
anywhere.  An NLSETQ works as far as eliminating the break but it doesn''t'
stop the message from being printed.'
	Would it be possible for \LEAF.ERROR (and the equivalent'
NS, DISK, FLOPPY and FTP error handlers) to see if they were under an'
ERRORSET with a NIL second argument to decide whether to print their own'
error messages or not?'
'
							Jeff'
-------'
'
Date':  1 Jun 84 15':13 PDT'
From': vanMelle.pa'
Subject': Re': AR 1308': Want to NLSETQ I/O errors so no message is printed'
In-reply-to': LispSupport.pa''s message of 1 Jun 84 15':02':35 PDT (Friday)'
To': LispSupport.pa'
cc': vanMelle.pa'
'
Hard, Unlikely.   A better error system, perhaps something signal-based, would make this a little easier.'


Workaround: 

Test Case: 

Edit-By: Sannella.PA

Edit-Date:  4-Jun-84 15':32':44

Attn: vanMelle.pa

Assigned To: 

In/By: 

Disposition: 

System: Operating System

Subsystem: Generic File Operations

Machine: 

Disk: 

Microcode Version: 

Memory Size: 

File Server: 

Server Software Version: 

Difficulty: Hard

Frequency: Everytime

Impact: Moderate

Priority: Unlikely

Status: Open

Problem Type: Design - Impl

Source Files: