[ bw_table fields=title,featured] fred
[wp v p]
[shortcode x=x] [nosuchcode ]
[shortcode] This was a user error. Badly formed comments – or those where the hyphens get transformed to ndashes an produce unexpected results.
It uses dashicons-editor-code. For oik's bw_dash shortcode I use text-icons which allows me to specify shortcode and get the square brackets.