bug#19790: [PATCH] destructive splicing in backquote

[Robin Templeton]

Stefan Monnier <monnier@IRO.UMontreal.CA> writes:

>> library.  A patch follows that adds CL-compatible comma-dot support.
>
> Other than CL-compatibility, what is the use of this?

It's an improvement over having the feature half-implemented, as it is
now. Read syntax for comma-dot was added in 1995 (commit
176348460d640ae96b0b21567df0de1457aa962b) without corresponding support
in backquote.el, and it has only been mentioned online a few times since
then, so it seemed harmless to implement what was likely originally
intended.

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