URLのパスに使える文字

RFC3986 Uniform Resource Identifier (URI): Generic Syntax 3.3 Path に記載あり。

code:txt

pchar = unreserved / pct-encoded / sub-delims / ":" / "@"

Appendix A. Collected ABNF for URI にこれらの非終端記号の記述

code:txt

unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"

pct-encoded = "%" HEXDIG HEXDIG

sub-delims = "!" / "$" / "&" / "'" / "(" / ")"

/ "*" / "+" / "," / ";" / "="

https://gyazo.com/4cee66657bd58d30b4e1b5300493ab80