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bug#40088: 27.0.90; Symbol’s value as variable is void: debugger-outer-m


From: Eli Zaretskii
Subject: bug#40088: 27.0.90; Symbol’s value as variable is void: debugger-outer-match-data
Date: Mon, 23 Mar 2020 16:16:21 +0200

> From: Noam Postavsky <address@hidden>
> Cc: address@hidden,  address@hidden,
>   address@hidden,  address@hidden
> Date: Sun, 22 Mar 2020 23:40:49 -0400
> 
> >> > It sounds like a very basic error.  How come we never saw it before?
> >> > Is it just luck?
> >> 
> >> Like I said, the debug.el code changed in Emacs 27 so that the bug can
> >> be triggered more often.
> >
> > Is this code used only in debug.el?
> 
> Actually, the call to backtrace--locals moved from debug.el to the new
> file backtrace.el (via backtrace-get-frames).  edebug.el and ert.el call
> backtrace-get-frames too.

So only backtrace-related functions can bump into this?  The root
cause sounded much more general to me.





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