bug#54296: Add buffer-matching functionality

[Dmitry Gutov]

On 14.03.2022 15:38, Philip Kaludercic wrote:
> The issue isn't that the default value couldn't be updated, but that if
> anyone has e.g. been using `project-kill-buffer-conditions' over the
> last 1½ years and has relied on the specific distinction between
> `major-mode' and `derived-mode', they would run in to unexpected
> results, that might result in more buffers being killed than intended,
> potentially data being lost that the user might not expect because of an
> update.

I see that this point hasn't been addressed at all.

Eli?