diff --git a/modules/desktop-environment/default.nix b/modules/desktop-environment/default.nix
index ef44236..51d9ee6 100644
--- a/modules/desktop-environment/default.nix
+++ b/modules/desktop-environment/default.nix
@@ -8,7 +8,6 @@
     ./dm.nix
     ./tlp.nix
     ./locale.nix
-    ./printing.nix
   ];
   services.flatpak.enable = true;
   security.polkit.enable = true;
diff --git a/modules/desktop-environment/printing.nix b/modules/desktop-environment/printing.nix
index 3233279..006ea0b 100644
--- a/modules/desktop-environment/printing.nix
+++ b/modules/desktop-environment/printing.nix
@@ -11,9 +11,10 @@
       ptouch-driver
       epsonscan2
       epson-escpr
-      epson-escpr2
+      epson-inkjet-printer-escpr2
       epson_201207w
       epson-alc1100
+      epson
     ];
   };
 }
diff --git a/modules/shell/helix.nix b/modules/shell/helix.nix
index adfda34..d24aa16 100644
--- a/modules/shell/helix.nix
+++ b/modules/shell/helix.nix
@@ -102,7 +102,7 @@
               d = "@<C-w>vgd";
               f = "@<C-w>vgy";
               h = ":toggle-option lsp.display-inlay-hints";
-              t = ":pipe flip-bool";
+              t = "@|flip-bool<ret>";
             };
           };
           insert = {
diff --git a/programs/flip-bool/src/main.rs b/programs/flip-bool/src/main.rs
index 0b99ab8..299685f 100644
--- a/programs/flip-bool/src/main.rs
+++ b/programs/flip-bool/src/main.rs
@@ -4,6 +4,7 @@
 #![feature(pattern)]
 
 use std::{
+    hint::black_box,
     io::{Read, Write},
     str::pattern::Pattern,
 };
@@ -85,27 +86,29 @@ fn find_bools(input: &str) -> [[Vec<usize>; 2]; BOOL_COUNT] {
             input
                 .match_indices(it)
                 .filter_map(|it| {
-                    fn char_guard(c: char) -> bool {
-                        !(c.is_alphanumeric() || c.is_contained_in("-_"))
-                    }
+                    let char_guard = |c: char| !(c.is_alphanumeric() || c.is_contained_in("-_"));
+                    let mut allow = true;
 
-                    let last_idx = it.0 + it.1.len();
-
-                    (it.0 > 0
-                        && last_idx < input.len()
-                        && char_guard(
+                    if it.0 > 0 {
+                        allow &= char_guard(
                             input[it.1.floor_char_boundary(it.0 - 1)..it.0]
                                 .chars()
                                 .last()
                                 .unwrap(),
-                        )
-                        && char_guard(
+                        );
+                    }
+
+                    let last_idx = it.0 + it.1.len();
+                    if last_idx < input.len() {
+                        allow &= char_guard(
                             input[(last_idx)..(input.ceil_char_boundary(last_idx + 1))]
                                 .chars()
                                 .last()
                                 .unwrap(),
-                        ))
-                    .then_some(it.0)
+                        );
+                    }
+
+                    allow.then_some(it.0)
                 })
                 .collect()
         })