elisp-completion-at-point: disappearing sole match

[basil-conto]

Commit 55e34e8 introduced the following behaviour when performing in-buffer elisp completion:

1. $ make plain
2. (nconc C-M-i
   • Expected result: unchanged buffer contents with message Sole match in echo area
   • Actual result: nconc is deleted with message Sole match in echo area

[abo-abo]

Thanks.

[basil-conto]

No, thank you. :)