It know that I can prevent hyphenation of a whole word with
\nohyphens, but how to avoid hyphenation at a character like
\_ in the source).
\nohyphens doesn't even seem to work for
I'm looking for any solution, i.e. one which excludes the character for hyphenation for the whole document or a command which I can apply on every occurance of
\_ - the first approach is preferred.