Server echoes of /me are not properly tagged with irc_tag_ annotations

[ToxicFrog]

Describe the bug

When connected to a network that supports server-side echoing, the server may add message tags to its echoes of your message, e.g. time to denote the message timestamp or account to denote a stable-across-nick-changes account name. These show up in weechat's line-tagging system as, e.g., irc_tag_time=2024-02-12T16:43:35.079Z.

When using /me, however, these tags are not added to weechat's line tags. /me messages from other users are properly tagged, but your own are not.

Steps to reproduce

1. Connect to a server that supports echoing, like libera
2. Send a normal message
3. Send a message with /me
4. Get someone else to send both kinds of messages
5. /debug tags

Current behavior

All of the messages except the /me you sent will have proper irc_tag_ tags (for libera, this usually means irc_tag_account and irc_tag_time; other networks may have different ones). The /me you sent will have the rest of its tags like irc_action and self_msg, but not the irc_tag_ tags. Looking at irc_raw will confirm that the server echo had the correct tags, they just weren't applied.

Expected behavior

All messages have the appropriate irc_tag_ tags.

Suggested solutions

No response

Additional information

No response

WeeChat version

4.1.1

What OS are you using?

NixOS

On which terminal are you running WeeChat?

No response

Which terminal multiplexer are you using?

No response