Slack just simply refuses to accept any message with &. To properly escape characters in HTML, you have to use &. Thus, when you escape &, it becomes & amp;, and I guess Slack expects you to escape that & too, and it is just impossible to get this working.
< and > work fine without being escaped, even though Slack says they have to be. It is just &. Sigh.
Slack just simply refuses to accept any message with &. To properly escape characters in HTML, you have to use &. Thus, when you escape &, it becomes & amp;, and I guess Slack expects you to escape that & too, and it is just impossible to get this working.
< and > work fine without being escaped, even though Slack says they have to be. It is just &. Sigh.