Re: Emacs messages

[Eli Zaretskii]

> From: Christopher Dimech <dimech@gmx.com>
> Date: Tue, 4 May 2021 07:48:12 +0200
> Sensitivity: Normal
> 
> I have an extensive number of .el files I use to customise emacs.
> A few moments ago I made changes to the code and kept one variable
> unmodified as `sel' rather than using `selection'.
> 
> Emacs complained with
> 
>   cond: Symbol’s value as variable is void: sel
> 
> It would be instructive for users if emacs include additional information,
> like the file name and line number associated with the detected `cond' 
> problem.

Emacs does that if you set debug-on-error non-nil, the you will have
the backtrace from which you can jump to the offending source.