[openstreetmap/openstreetmap-website] Modified hdyc regex to accept spaces and percent-encoded spaces (PR #6468)

[Pablo Brasero]

@pablobm commented on this pull request.



> @@ -31,7 +31,7 @@ class SocialLink < ApplicationRecord
     :flickr => %r{\Ahttps?://(?:www\.)?flickr\.com/people/([a-zA-Z0-9 at ._-]+)},
     :github => %r{\Ahttps?://(?:www\.)?github\.com/([a-zA-Z0-9_-]+)},
     :gitlab => %r{\Ahttps?://(?:www\.)?gitlab\.com/([a-zA-Z0-9_-]+)},
-    :hdyc => %r{\Ahttps?://(?:www\.)?hdyc\.neis-one\.org/\?([a-zA-Z0-9_-]+)},
+    :hdyc => %r{\Ahttps?://(?:www\.)?hdyc\.neis-one\.org/\?([a-zA-Z0-9\s%20_-]+)},

Also, generally on regular expressions: "character classes" (lists of characters surrounded by square brackets `[...]`) take each character individually, so `%20` is `%`, `2`, or `0` individually, but not the three together. The `\s` does work because `\` is a escape character a special case. `%` is a escape character in URLs, but not in regular expressions.

This is a great website to test out regular expressions: https://rubular.com/

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