Add project files.

3rd-party/curl-7.52.1/docs/cmdline-opts/url.d

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+long: url
+Arg: <url>
+Help: URL to work with
+---
+Specify a URL to fetch. This option is mostly handy when you want to specify
+URL(s) in a config file.
+
+If the given URL is missing a scheme name (such as "http://" or "ftp://" etc)
+then curl will make a guess based on the host. If the outermost sub-domain
+name matches DICT, FTP, IMAP, LDAP, POP3 or SMTP then that protocol will be
+used, otherwise HTTP will be used. Since 7.45.0 guessing can be disabled by
+setting a default protocol, see --proto-default for details.
+
+This option may be used any number of times. To control where this URL is
+written, use the --output or the --remote-name options.