Continuing the discussion from Ruby backtick returns nothing!:
Triple backtick delimiter lines.
Backquote character key on US keyboard.
If it is error message text (or some other plain text that contains
#, or other characters that can confuse Discourse markdown,) then specify “text” as a lexing language:
paste error message here
If it is Ruby, then:
# code here
/* js code here */
If it is HTML, then:
<!-- html here -->
If it is C, then:
// C code here
… etc. (Discourse code lexer recognizes the major programming languages.)