diff --git a/cursive-core/src/utils/markup/cursup.rs b/cursive-core/src/utils/markup/cursup.rs
index ae526ab2..7b0cfead 100644
--- a/cursive-core/src/utils/markup/cursup.rs
+++ b/cursive-core/src/utils/markup/cursup.rs
@@ -66,7 +66,10 @@ pub fn parse_spans(input: &str) -> Vec<StyledIndexedSpan> {
             }
             (State::Plain, _) => (),
 
-            (State::Slash(_), b'a'..=b'z' | b'A'..=b'Z' | b'0'..=b'9' | b'#' | b'+' | b'.') => (),
+            (
+                State::Slash(_),
+                b'a'..=b'z' | b'A'..=b'Z' | b'0'..=b'9' | b'#' | b'+' | b'.' | b'_',
+            ) => (),
             (State::Slash(slash), b'{') => {
                 // Add a candidate.
                 candidates.push(Candidate {
@@ -158,7 +161,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use crate::theme::{BaseColor, Color, Effect, Style};
+    use crate::theme::{BaseColor, Color, ColorType, Effect, Style};
     use crate::utils::markup::cursup::parse;
     use crate::utils::markup::StyledString;
     use crate::utils::span::Span;
@@ -238,6 +241,20 @@ mod tests {
         );
     }
 
+    #[test]
+    fn inherit_parent() {
+        let parsed = parse("/inherit_parent{foo}");
+        let spans: Vec<_> = parsed.spans().collect();
+        assert_eq!(
+            &spans,
+            &[Span {
+                content: "foo",
+                width: 3,
+                attr: &Style::from_color_style(ColorType::InheritParent.into()),
+            }]
+        );
+    }
+
     #[test]
     fn hex_color() {
         let parsed = parse("/#ff0000{red}");