A simple Minecraft client-side mod, that reverts the run_command click event restriction introduced in 1.19.1-rc1,
so non-command messages can be sent freely as a chat message via run_command click event again
If you want a solution without user awareness, here's a server-side only mod that does the same thing: LetMeClickAndSendForServer
| Mod | Side | Advantage | Disadvantage | 
|---|---|---|---|
| LetMeClickAndSend | client | Exactly the same behavior as pre mc1.19.1 | Needs to be installed on all players' clients | 
| LetMeClickAndSendForServer | server | No need to install on client | Reduces maximum chat message length by 7 | 
Example
Let's run the following command, and then click the shown text
# Minecraft [1.7, 1.21.5)
/tellraw @a {"text":"click me to send \"hi\"","clickEvent":{"action":"run_command","value":"hi"}}
In vanilla 1.19.1 ~ 1.21.4, after clicking, you are not able to say anything since hi is not a valid command (not starts with /)
With this mod, after clicking, you will automatically send a hi chat message to the server, which is the same behavior as the previous Minecraft versions
MC 1.21.5+
Since MC 1.21.5, the run_command behavior has changed a lot
First is the change in command syntax, which has little impact:
# Minecraft [1.21.5, ~)
/tellraw @a {"text":"click me to send \"hi\"","click_event":{"action":"run_command","command":"hi"}}
Next is the change in behavior, which has a greater impact:
- The 
commandvalue is always valid, regardless of whether it starts with a/or not - The client will strip the 
/prefix from thecommandvalue and send the remaining string as a command 
It's no longer possible to correctly distinguish between "a run_command for sending chat message" and "a run_command for sending command"
As a workaround, LetMeClickAndSendForServer for MC >= 1.21.5 will only replace certain command with the /lmcas command.
By default, only command value starting with !!, which is a commonly-used command prefix
in MCDReforged plugin ecosystem, will be replaced
A config file located at ./config/letmeclickandsendforserver/config.json is added for customizing the replacing behavior
{
    "sendChatPattern": "!!.*"
}
The sendChatPattern should be a valid regex pattern. All command values that fully match the pattern will be as chat messages
To test with the default configuration, you can use:
/tellraw @a {"text":"click me to send \"!!MCDR\"","click_event":{"action":"run_command","command":"!!MCDR"}}
Requirements
It's a client-side only mod. It requires 0 extra dependency
Requirements:
- Minecraft >= 1.19.1
 
