diff --git a/src/algos/fzf/parser.rs b/src/algos/fzf/parser.rs
index 33742f8..96815ff 100644
--- a/src/algos/fzf/parser.rs
+++ b/src/algos/fzf/parser.rs
@@ -26,6 +26,13 @@ impl Default for FzfParser {
     }
 }
 
+impl core::fmt::Debug for FzfParser {
+    #[inline]
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("FzfParser").finish_non_exhaustive()
+    }
+}
+
 impl FzfParser {
     /// TODO: docs
     #[inline]
diff --git a/src/algos/fzf/scheme.rs b/src/algos/fzf/scheme.rs
index 6dd7efc..093056a 100644
--- a/src/algos/fzf/scheme.rs
+++ b/src/algos/fzf/scheme.rs
@@ -24,6 +24,22 @@ impl FzfScheme {
             Self::History => HISTORY,
         }
     }
+
+    /// TODO: docs
+    #[inline]
+    pub(super) fn from_inner(scheme: &Scheme) -> Option<Self> {
+        if scheme.bonus_boundary_white == DEFAULT.bonus_boundary_white {
+            Some(Self::Default)
+        } else if scheme.bonus_boundary_white == PATH.bonus_boundary_white {
+            if scheme.initial_char_class == CharClass::Delimiter {
+                Some(Self::Path)
+            } else {
+                Some(Self::History)
+            }
+        } else {
+            None
+        }
+    }
 }
 
 /// TODO: docs
diff --git a/src/algos/fzf/v1.rs b/src/algos/fzf/v1.rs
index a7d3f4d..08f10e4 100644
--- a/src/algos/fzf/v1.rs
+++ b/src/algos/fzf/v1.rs
@@ -17,6 +17,17 @@ pub struct FzfV1 {
     with_matched_ranges: bool,
 }
 
+impl core::fmt::Debug for FzfV1 {
+    #[inline]
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("FzfV2")
+            .field("case_sensitivity", &self.case_sensitivity)
+            .field("matched_ranges", &self.with_matched_ranges)
+            .field("scheme", &FzfScheme::from_inner(&self.scheme).unwrap())
+            .finish_non_exhaustive()
+    }
+}
+
 impl FzfV1 {
     /// TODO: docs
     #[inline]
diff --git a/src/algos/fzf/v2.rs b/src/algos/fzf/v2.rs
index 8fc9ea0..cfd2048 100644
--- a/src/algos/fzf/v2.rs
+++ b/src/algos/fzf/v2.rs
@@ -18,6 +18,17 @@ pub struct FzfV2 {
     with_matched_ranges: bool,
 }
 
+impl core::fmt::Debug for FzfV2 {
+    #[inline]
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_struct("FzfV2")
+            .field("case_sensitivity", &self.case_sensitivity)
+            .field("matched_ranges", &self.with_matched_ranges)
+            .field("scheme", &FzfScheme::from_inner(&self.scheme).unwrap())
+            .finish_non_exhaustive()
+    }
+}
+
 impl FzfV2 {
     /// TODO: docs
     #[inline]