pub const STORE_ID_ALPHABET: &'static str;Expand description
The characters a store id may contain, for error messages and docs.
[A-Za-z0-9_.-] — the intersection of “safe as a filesystem path
component”, “safe in a URL path segment unescaped”, “safe unquoted in a
shell”, and “typeable without thinking”. Notably excluded: whitespace (an
id you cannot see the boundaries of), / and \ (directory escape), @
(the separator), and everything non-ASCII (because two visually identical
ids under different Unicode normalisations would reintroduce exactly the
two-spellings problem that the lowercase-hex rule exists to prevent).