ASCII Filename Order

Let's see how files are sorted on Windows, GitHub, or any other platform you like.

Windows

Sorting

• Numbers are sorted numerically.
• Case insensitive.

Limitations

• Leading and trailing spaces are trimmed.
• Some symbols cannot be used: " * / : < > ? \ |

Confirmed on Windows 10 Home 64-bit 22H2.

GitHub

See the invalid-on-Windows branch for these files.

Sorting

• All are sorted in ASCII order, including numbers.

Limitations

When you "Create new file" on GitHub,

• Leading and trailing spaces are trimmed.
• Slash / cannot be used.
• Symbols other than / that cannot be used in Windows, namely " * : < > ? \ |, can be used here, but may cause serious errors if the repository is cloned on Windows:

  error: invalid path ':a'
  error: invalid path '\a'
  error: unable to create file "a: Invalid argument
  error: unable to create file *a: Invalid argument
  error: unable to create file <a: Invalid argument
  error: unable to create file >a: Invalid argument
  error: unable to create file ?a: Invalid argument
  error: unable to create file |a: Invalid argument
  

Confirmed on Google Chrome 111.0 on 2023-04-09.

Other OS

Wanted.

As far as I've heard,

• Mac doesn't allow / and :.
• Unix allows even \n.

Appendix

ASCII Codes

FYI.

• 0x00-0x1F, 0x7F (DEL)
  • Control characters
• 0x20-0x2F
  • Space, !, ", #, $, %, &, ', (, ), *, +, ,, -, ., /
• 0x30-0x3F
  • 0-9, :, ;, <, =, >, ?
• 0x40-0x4F
  • @, A-O
• 0x50-0x5F
  • P-Z, [, \, ], ^, _
• 0x60-0x6F
  • `, a-o
• 0x70-0x7E
  • p-z, {, |, }, ~