puni-join command like split

AmaiKinono / puni

Structured editing (soft deletion, expression navigating & manipulating) that supports many major modes out of the box.

GNU General Public License v3.0

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puni-join command like split #52

Open MicahElliott opened 1 year ago

MicahElliott commented 1 year ago

Is there any equivalent to puni-join? I'm coming from smarparens and often use split and join, but was surprised to see there is no puni-join. Is it called something else in puni?

WorldsEndless commented 1 year ago

What does join do? Is it the same as puni-slurp-forward?

AmaiKinono commented 1 year ago

Puni has split but no join. The reason:

Puni implements up-list but no down-list
So Puni knows the exact delimiters when inside a sexp, but doesn't know the delimiters of sexps around the cursor.
So Puni could split the sexp when the cursor is in it, which is just inserting a pair of the delimiters, but Puni could not join the sexps around the cursor, which involves deleting a pair of delimiters.