bug#25153: ERC. Channel topic wipe by /topic command

[Lars Ingebrigtsen]

Pavel Korolev <mail@borodust.org> writes:

> Typing "/topic #channel" correctly displays channel topic, but when one
> types "/topic #channel " (see trailing space) this command sets topic of
> the channel to "" which is not what exactly expected.
> This is especially disturbing when autocomplete used, so typing "/topic
> #cha" and pressing <TAB> will autoexpand it into  "/topic #channel "
> which will wipe channel's topic after hitting <RET>.

This has now been fixed in Emacs 27.1.

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