I'm wondering if there is a name for the misuse of a dash in English Grammar. For clarity, I say 'dash' because I see them used in a way that the writer may think is an em dash, but more often writers online seem to use the hyphen symbol (-) rather than the dash symbol (—), possibly because it does not appear on all keyboards (particularly laptops without a numeric keypad).
I understand their correct use - em dashes to introduce parenthetical information and en dashes to indicate a range - but I often see them needlessly breaking up sentences, or being used in the place of a comma, such as these examples from a local newspaper:
- When I accepted the invitation - I should have realised I was in it for it.
- After a few minutes wait - the games began.
I have found articles about the misuse of commas, but I'd like to know if there is a proper name for any of these errors, as with some other grammatical mistakes, such as the 'comma splice'.