Re: A weird case that kills NVDA

Brian's Mail list account

I've noticed in more than one mail client some synths do stop working when you find somebody has made the from or subject line look the same but used some oddball selection of character set which you can often see by looking at the headers of the message.
Sounds like a bug in the synth to me, as most may say junk or go silent on the word but then come back again. I imagine spammers do it to try to get around filters looking for specific strings to identify spam, which is of course what you did, but do be careful, since congrat could be part of a work in a wanted message. Also the person sending such stuff will, I have no doubt find another word to use to get his or her spam though.

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----- Original Message -----
From: "Christo de Klerk" <christodeklerk@...>
To: <>
Sent: Saturday, July 02, 2022 2:28 PM
Subject: Re: [nvda] A weird case that kills NVDA

I am using the SAPI version of Vocalizer, the South African English voice, Tessa. Yes, it is quite possible that Tessa is getting choked up, not NVDA as such. I'll give your suggestion a go some time.

Kind regards


On 2022/07/02 01:33pm, Gene wrote:

I don't know why having the string in that particular place causes a problem. Perhaps there are no spaces and when you write it elsewhere, you have spaces before and after it. What synthesizer are you using? It is most likely that the string causes the synthesizer to crash. If you are curious enough, you can disable the rule and look at a message using a different synthesizer.


On 7/2/2022 4:45 AM, Christo de Klerk wrote:

Hello all

Here is some weirdness that I will try to describe in some detail. When this happens, it kills speech from NVDA, but the computer is not frozen. If you give the Ctrl+Alt+n command, you hear the NVDA startup sound and it comes back. You do not get the NVDA shutdown sound. Here is what seems to be the cause and how I worked around it:

I am using Thunderbird as my email client. The columns in my inbox are set up to show attachments first (if any), followed by From, followed by Subject. As I have been doing email, every now and then I lost all speech and had to restart NVDA, just for it to die again when I got to a particular message. I used Narrator to figure out what the offending message header was and saw that in the From column,it showed "_Congrat_" and nothing in the Subject column, obviously some spam or malware kind of message. I then set up a rule to scan for the string "-Congrat" in the From, To, or Subject fields and to delete such a message. That seems to have worked around the problem.

I have no idea why this causes NVDA to go quiet on me, because having the offending text string in my message does not have any negative effect.

Kind regards


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