These are miscellaneous tests of my own division _ hello_world The quick brown fox jumps over the lazy doggerel.txt well _ then . how about this Once upon a time there was a file name sanitiser; it was a good file name sanitiser, and never exposed security vulnerabilities to the World. “It’s a dangerous place,” its grandfather said. “If a wolf should come out of the forest, then what would (Some Peter and the Wolf snuck in there.) hidden C__WINDOWS_system32_driver_etc_hosts %WINDIR%_system32_driver_etc_hosts Kinda funny how Windows has a _etc_hosts _ _ _ _ _ _ I’m basically just typing random stuff here OK, time for some more serious stuff _ For Unicode paths, some file systems limit paths to roughly 255 UTF-8 code units, others to roughly 255 UTF-16 code units. UTF-8 is the tighter of these restrictions in all circumstances_ UTF-16 uses one code unit until U+FFFF, and two beyond that, while # One-byte characters 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 # Two-byte characters áɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠ áɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠ áɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠ áɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠ áɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠɦïķáɓçđéƒɠ # Three-byte characters ‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“ ‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“ ‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“”„‟†‡•‣․‥…‧‐‑‒–—―‖‗‘’‚‛“ # Four-byte characters 𐀀𐀁𐀂𐀃𐀄𐀅𐀆𐀇𐀈𐀉𐀊𐀋𐀍𐀎𐀏𐀐𐀑𐀒𐀓𐀔𐀕𐀖𐀗𐀘𐀙𐀚𐀛𐀜𐀝𐀞𐀟𐀠𐀡𐀢𐀣𐀤𐀥𐀦𐀨𐀩𐀪𐀫𐀬𐀭𐀮𐀯𐀰𐀱𐀲𐀳𐀴𐀵𐀶𐀷𐀸𐀹𐀺𐀼𐀽𐀿𐁀𐁁𐁂 𐀀𐀁𐀂𐀃𐀄𐀅𐀆𐀇𐀈𐀉𐀊𐀋𐀍𐀎𐀏𐀐𐀑𐀒𐀓𐀔𐀕𐀖𐀗𐀘𐀙𐀚𐀛𐀜𐀝𐀞𐀟𐀠𐀡𐀢𐀣𐀤𐀥𐀦𐀨𐀩𐀪𐀫𐀬𐀭𐀮𐀯𐀰𐀱𐀲𐀳𐀴𐀵𐀶𐀷𐀸𐀹𐀺𐀼𐀽𐀿𐁀𐁁𐁂 𐀀𐀁𐀂𐀃𐀄𐀅𐀆𐀇𐀈𐀉𐀊𐀋𐀍𐀎𐀏𐀐𐀑𐀒𐀓𐀔𐀕𐀖𐀗𐀘𐀙𐀚𐀛𐀜𐀝𐀞𐀟𐀠𐀡𐀢𐀣𐀤𐀥𐀦𐀨𐀩𐀪𐀫𐀬𐀭𐀮𐀯𐀰𐀱𐀲𐀳𐀴𐀵𐀶𐀷𐀸𐀹𐀺𐀼𐀽𐀿𐁀𐁁𐁂 _ abcdef.ghij abcde.fghij AUX.abcdef lpT7.abcdef cOm6.abcdef CON_ aux.h Lpt1.exe xyz nül COM1.jpg.png _ Some sanitisers try stripping out ZWSP (​), which can be used as a fingerprinting vector and has no particularly legitimate purpose in a file name; I’m not, because removing it doesn’t solve the fingerprinting risk, as you can use ZWNJ and ZWJ (‌