The ^L implementation was ugly and wrong. Using a character from the already allowed set is better. Also, the motivation for ^L was to avoid breaking existing pages (as much as possible). But using a line consisted of only `-' shouldn't break anything, but only improve the legibility. In the future other characters may be added (like a line of only EN DASH or EM DASH for example.)

During safe_mode the fs process shouldn't open or unlink the crashed_file.

When enabled with the -S (or --safe) flag, prevent telescope from writing files to the disk.