I would like to see as a regex (maybe something like a character class) a list of characters for filenames for html documents which will work on most any windows and linux server.
one of my questions is about using commas and spaces. my understanding is that those should be avoided in the general case, along with punctuation and control charracters except ._- so a regex I would be thinking of would look like [A-Za-z0-9_\.-]