diff --git a/src/bin/tcat.rs b/src/bin/tcat.rs
index 24c4a68..be1b9d5 100644
--- a/src/bin/tcat.rs
+++ b/src/bin/tcat.rs
@@ -183,8 +183,8 @@ fn highlight_file(path: &str, ps: &SyntaxSet, ts: &ThemeSet) -> io::Result<()> {
         let ranges = h.highlight_line(line, ps).unwrap_or_default();
         for (style, text) in &ranges {
             // Strip trailing newline from the last span so reset doesn't leave colour on blank line
-            let t = if text.ends_with('\n') {
-                &text[..text.len() - 1]
+            let t = if let Some(stripped) = text.strip_suffix('\n') {
+                stripped
             } else {
                 text
             };
diff --git a/src/completion.rs b/src/completion.rs
index 8207c7a..c248d5c 100644
--- a/src/completion.rs
+++ b/src/completion.rs
@@ -49,7 +49,7 @@ fn load_history() -> Vec<String> {
     for line in text.lines().rev() {
         // Strip extended history prefix:  `: 1234567890:0;actual command`
         let cmd = if line.starts_with(": ") {
-            match line.splitn(3, ';').nth(1) {
+            match line.split(';').nth(1) {
                 Some(s) => s,
                 None => line,
             }
diff --git a/src/main.rs b/src/main.rs
index 8387c31..cbfef0b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -314,12 +314,11 @@ impl App {
                         self.pty_write(b"\x05");
                     }
                     s => {
-                        if let Some(d) = s.chars().next().and_then(|c| c.to_digit(10)) {
-                            if d >= 1 {
+                        if let Some(d) = s.chars().next().and_then(|c| c.to_digit(10))
+                            && d >= 1 {
                                 self.switch_tab(d as usize - 1);
                                 self.sync_window_title();
                             }
-                        }
                     }
                 },
                 _ => {}
@@ -351,14 +350,13 @@ impl App {
         }
 
         // ── Printable text ────────────────────────────────────────────────────
-        if !ctrl && !alt {
-            if let Some(text) = &event.text {
+        if !ctrl && !alt
+            && let Some(text) = &event.text {
                 self.active_mut().ghost_text = None;
                 let bytes = text.as_str().as_bytes().to_vec();
                 self.active_mut().write(&bytes);
                 return;
             }
-        }
 
         match &event.logical_key {
             Key::Named(NamedKey::Enter) => {
@@ -600,11 +598,10 @@ impl ApplicationHandler<AppEvent> for App {
                     .as_ref()
                     .map(|r| position.y < r.tab_bar_height as f64)
                     .unwrap_or(false);
-                if in_bar {
-                    if let Some(w) = &self.window {
+                if in_bar
+                    && let Some(w) = &self.window {
                         w.request_redraw();
                     }
-                }
             }
 
             WindowEvent::CursorLeft { .. } => {
@@ -620,8 +617,8 @@ impl ApplicationHandler<AppEvent> for App {
                 ..
             } => {
                 let (mx, my) = self.cursor_pos;
-                if let Some(r) = &self.renderer {
-                    if my >= 0.0 && my < r.tab_bar_height as f64 {
+                if let Some(r) = &self.renderer
+                    && my >= 0.0 && my < r.tab_bar_height as f64 {
                         let bw = self
                             .window
                             .as_ref()
@@ -645,7 +642,6 @@ impl ApplicationHandler<AppEvent> for App {
                             w.request_redraw();
                         }
                     }
-                }
             }
 
             WindowEvent::MouseWheel { delta, .. } => {
diff --git a/src/renderer.rs b/src/renderer.rs
index 086ba15..5a9f0bd 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -85,6 +85,7 @@ impl Renderer {
         }
     }
 
+    #[allow(clippy::too_many_arguments)] // buf+bw+bh are an inherent unit for pixel buffers
     fn blit(
         &mut self,
         buf: &mut [u32],
@@ -130,6 +131,7 @@ impl Renderer {
         }
     }
 
+    #[allow(clippy::too_many_arguments)]
     fn fill_rect(
         buf: &mut [u32],
         bw: usize,
@@ -175,6 +177,7 @@ impl Renderer {
     }
 
     /// Filled rounded rectangle with radius `r` pixels (circular corners).
+    #[allow(clippy::too_many_arguments)]
     fn fill_rounded(
         buf: &mut [u32],
         bw: usize,
@@ -360,6 +363,7 @@ impl Renderer {
     // ── Public render ─────────────────────────────────────────────────────────
 
     /// `hover` — hovered tab index, or `tabs.len()` for the + button.
+    #[allow(clippy::too_many_arguments)]
     pub fn render(
         &mut self,
         buf: &mut [u32],
@@ -418,8 +422,8 @@ impl Renderer {
         }
 
         // ── 2. Ghost text ─────────────────────────────────────────────────────
-        if !state.is_scrolled_back() {
-            if let Some(g) = ghost {
+        if !state.is_scrolled_back()
+            && let Some(g) = ghost {
                 let py = tby + state.cursor_row * ch;
                 for (i, c) in g.chars().enumerate() {
                     let col = state.cursor_col + i;
@@ -429,7 +433,6 @@ impl Renderer {
                     self.blit(buf, bw, bh, col * cw, py, c, GHOST_COLOR);
                 }
             }
-        }
 
         // ── 3. Cursor ─────────────────────────────────────────────────────────
         if !state.is_scrolled_back()
diff --git a/src/terminal.rs b/src/terminal.rs
index f910fe0..8a91adc 100644
--- a/src/terminal.rs
+++ b/src/terminal.rs
@@ -332,7 +332,7 @@ impl Perform for TerminalState {
                 let next = (self.cursor_col / 8 + 1) * 8;
                 self.cursor_col = next.min(self.cols.saturating_sub(1));
             }
-            0x0a | 0x0b | 0x0c => self.do_newline(),
+            0x0a..=0x0c => self.do_newline(),
             0x0d => self.cursor_col = 0,
             _ => {}
         }
@@ -509,11 +509,10 @@ impl Perform for TerminalState {
         }
         match params[0] {
             b"0" | b"2" => {
-                if params.len() >= 2 {
-                    if let Ok(s) = std::str::from_utf8(params[1]) {
+                if params.len() >= 2
+                    && let Ok(s) = std::str::from_utf8(params[1]) {
                         self.title = s.to_string();
                     }
-                }
             }
             b"7" => {
                 // OSC 7: shell reports current directory as file://hostname/path
@@ -524,7 +523,7 @@ impl Perform for TerminalState {
                     .join(";");
                 let path = content
                     .strip_prefix("file://")
-                    .and_then(|s| s.splitn(2, '/').nth(1))
+                    .and_then(|s| s.split_once('/').map(|x| x.1))
                     .map(|s| format!("/{s}"))
                     .unwrap_or(content);
                 if !path.is_empty() {