Do not use the plain text parser for property drawers.

This additional exit condition was causing property drawers to parse incorrectly.

org_mode_samples/greater_element/property_drawer/properties_with_underscore.org

@@ -0,0 +1,7 @@
+** foo
+:PROPERTIES:
+:DESCRIPTION: lorem
+:ALT_TITLE: ipsum
+:END:
+
+bar

src/parser/property_drawer.rs

@@ -2,13 +2,14 @@ use nom::branch::alt;
 use nom::bytes::complete::is_not;
 use nom::bytes::complete::tag;
 use nom::bytes::complete::tag_no_case;
+use nom::character::complete::anychar;
 use nom::character::complete::line_ending;
 use nom::character::complete::space0;
 use nom::character::complete::space1;
 use nom::combinator::eof;
-use nom::combinator::map;
 use nom::combinator::opt;
 use nom::combinator::recognize;
+use nom::combinator::verify;
 use nom::multi::many_till;
 use nom::sequence::tuple;
 
@@ -23,7 +24,6 @@ use crate::parser::greater_element::PropertyDrawer;
 use crate::parser::parser_context::ContextElement;
 use crate::parser::parser_context::ExitMatcherNode;
 use crate::parser::parser_with_context::parser_with_context;
-use crate::parser::plain_text::plain_text;
 use crate::parser::util::exit_matcher_parser;
 use crate::parser::util::get_consumed;
 use crate::parser::util::immediate_in_section;
@@ -147,11 +147,16 @@ fn node_property_name<'r, 's>(
         }));
 
     let (remaining, name) = recognize(tuple((
-        map(parser_with_context!(plain_text)(&parser_context), |pt| {
-            pt.source
-        }),
+        verify(
+            many_till(
+                anychar,
+                parser_with_context!(exit_matcher_parser)(&parser_context),
+            ),
+            |(children, _exit_contents)| !children.is_empty(),
+        ),
         opt(tag("+")),
     )))(input)?;
+
     Ok((remaining, name))
 }