Regex Examples (character class)
Any line that has any of the #a#, #b#, #c#, #d#, #e#, #f#, #@# or #.#
Regex: /#[abcdef@.]#/ Input: "ab #q# " Input: "ab #z#a# " Input: "ab #.# " Input: "ab ## " Input: "#a#" Input: "##" Input: "###"
Regex: /#[a-f@.]#/