rclone: Can't add UTF-8 characters to alias names

Space end character had been fixed, and work good 😃, Thank @ncw @albertony

@albertony can you think of a reason why we shouldn’t allow UTF-8 characters in alias names?

I would suggest we use allow unicode character class L and N for letter and number.

This would change this regexp

https://github.com/rclone/rclone/blob/beea4d5119555c0424cf3bc8b3e67d625813b014/fs/fspath/path.go#L16

Into something like

configNameRe = `[\p{L}\p{N}_. -]+`

This is the first time I’ve used unicode character classes so I’m not 100% sure that is correct. We’d need to fix the google drive backend also where it cleans these characters from alias names it creates for the combine backend.

@vulieumang could you cut and paste some of the original names here so I can check that regexp would work please? Thanks

Here are the unicode character class names for reference

Unicode character class names	general category
C	other
Cc	control
Cf	format
Cn	unassigned code points (NOT SUPPORTED)
Co	private use
Cs	surrogate
L	letter
LC	cased letter (NOT SUPPORTED)
L&	cased letter (NOT SUPPORTED)
Ll	lowercase letter
Lm	modifier letter
Lo	other letter
Lt	titlecase letter
Lu	uppercase letter
M	mark
Mc	spacing mark
Me	enclosing mark
Mn	non-spacing mark
N	number
Nd	decimal number
Nl	letter number
No	other number
P	punctuation
Pc	connector punctuation
Pd	dash punctuation
Pe	close punctuation
Pf	final punctuation
Pi	initial punctuation
Po	other punctuation
Ps	open punctuation
S	symbol
Sc	currency symbol
Sk	modifier symbol
Sm	math symbol
So	other symbol
Z	separator
Zl	line separator
Zp	paragraph separator
Zs	space separator

This is a request to add UTF-8 characters into the names of aliases. Currently we only support a-z0-9 but there is no reason we shouldn’t use UTF-8 characters in aliases.

I’ll re-open this so we can think about the consequences of the change.