bug#19790: [PATCH] destructive splicing in backquote

[Robin Templeton]

Robin Templeton <robin@terpri.org> writes:

> 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.

Also, I could submit a patch to remove the special handling for ",." or
make it a syntax error, if either of those options would be preferable.
But the current behavior seems to be a bug.

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