Handle 3 or more slashes in the path for plain links.

org_mode_samples/object/plain_link/multiple_slashes.org

@@ -0,0 +1,13 @@
+file:foo
+file:/bar
+file://baz
+file:///lorem
+file:////ipsum
+file://///dolar
+
+https:foo
+https:/bar
+https://baz
+https:///lorem
+https:////ipsum
+https://///dolar

src/parser/plain_link.rs

@@ -2,11 +2,13 @@ use nom::branch::alt;
 use nom::bytes::complete::is_not;
 use nom::bytes::complete::tag;
 use nom::bytes::complete::tag_no_case;
+use nom::bytes::complete::take;
 use nom::character::complete::anychar;
 use nom::character::complete::none_of;
 use nom::character::complete::one_of;
 use nom::combinator::consumed;
 use nom::combinator::eof;
+use nom::combinator::flat_map;
 use nom::combinator::map;
 use nom::combinator::map_parser;
 use nom::combinator::not;
@@ -17,6 +19,7 @@ use nom::combinator::rest;
 use nom::combinator::verify;
 use nom::multi::many0;
 use nom::multi::many1;
+use nom::multi::many1_count;
 use nom::multi::many_till;
 use nom::sequence::tuple;
 
@@ -135,13 +138,17 @@ fn file_path_plain<'b, 'g, 'r, 's>(
         exit_matcher: &path_plain_end,
     });
     let parser_context = context.with_additional_node(&parser_context);
-    let (remaining, (raw_link, (_, application, _, path, search_option))) = consumed(tuple((
+    let (remaining, (raw_link, (_, application, _, _, path, search_option))) = consumed(tuple((
         peek(tag("file")),
         map_parser(
             parser_with_context!(protocol)(&parser_context),
             parse_file_and_application,
         ),
         tag(":"),
+        opt(flat_map(
+            peek(map(verify(many1_count(tag("/")), |c| *c >= 3), |c| c - 1)),
+            take,
+        )),
         parser_with_context!(path_plain)(&parser_context),
         opt(map(
             tuple((