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Re: bash --debugger does nothing if debug script not installed


From: Ryan Cunningham
Subject: Re: bash --debugger does nothing if debug script not installed
Date: Sun, 23 Nov 2014 11:29:56 -0800

On Nov 23, 2014, at 10:58 AM, Chet Ramey <address@hidden> wrote:
> 
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>> On 11/21/14 9:31 PM, Eric Blake wrote:
>> 
>> $ bash --debugger foo
>> bash: debug script /usr/bin/bashdb: file not found
>> 
>> to give me a heads up that I need to install bashdb.  Would it make
>> sense to make the explicit use of --debugger be fatal if a debugger
>> start file is configured but not present?
> 
> I think a better change is to report the error on opening the file,
> then turn off debugging mode but allow script execution to continue.
> Something like this:
> 
> $ bash --debugger foo
> foo: /usr/local/share/bashdb/bashdb-main.inc: No such file or directory
> foo: warning: cannot start debugger; debugging mode disabled
> hello

Maybe something like this:

bash: foo: debugger /usr/local/share/bashdb/bashdb-main.inc: No such file or 
directory
bash: foo: disabling debugging mode
hello

Messages above that begin with "bash:" should be directed to file descriptor 2.

> 
> Chet
> - -- 
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>         ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/
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