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

[Dmitry Gutov]

On 18.03.2020 2:06, Michael Heerdegen wrote:
> If there are lots of cases like this under the cited thousands then I
> guess we need a way to declare a variable special without assigning an
> init value.

It's already "special" where it's used (in one file). "value as variable 
is void" is what happens when it doesn't have an init value, and nobody 
bound it to anything.