[#boost-urls-pchars]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::pchars
:relfileprefix: ../../
:mrdocs:


The path character set

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/rfc/pchars.hpp#L45[boost/url/rfc/pchars.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr auto pchars = unreserved_chars + sub_delim_chars + ':' + '@';
----

== Description



=== Example

Character sets are used with rules and    the functions xref:boost/urls/grammar/find_if.adoc[grammar::find_if] and    xref:boost/urls/grammar/find_if_not.adoc[grammar::find_if_not].

[,cpp]
----
system::result< decode_view > rv = grammar::parse( "Program%20Files", pchars );
----

=== BNF

[,cpp]
----
pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.3[3&period;3&period; Path (rfc3986)]



== See Also


xref:boost/urls/grammar/find_if.adoc[grammar&colon;&colon;find&lowbar;if],        xref:boost/urls/grammar/find_if_not.adoc[grammar&colon;&colon;find&lowbar;if&lowbar;not],        xref:boost/urls/grammar/parse-02.adoc[grammar&colon;&colon;parse],        xref:boost/urls/pct_encoded_rule.adoc[pct&lowbar;encoded&lowbar;rule]&period;






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