diff --git a/macos/Sources/Ghostty/Ghostty.App.swift b/macos/Sources/Ghostty/Ghostty.App.swift
index 9c1acd1a8..39ebbb51f 100644
--- a/macos/Sources/Ghostty/Ghostty.App.swift
+++ b/macos/Sources/Ghostty/Ghostty.App.swift
@@ -180,14 +180,14 @@ extension Ghostty {
 
         func newTab(surface: ghostty_surface_t) {
             let action = "new_tab"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
 
         func newWindow(surface: ghostty_surface_t) {
             let action = "new_window"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
@@ -210,14 +210,14 @@ extension Ghostty {
 
         func splitToggleZoom(surface: ghostty_surface_t) {
             let action = "toggle_split_zoom"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
 
         func toggleFullscreen(surface: ghostty_surface_t) {
             let action = "toggle_fullscreen"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
@@ -238,21 +238,21 @@ extension Ghostty {
             case .reset:
                 action = "reset_font_size"
             }
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
 
         func toggleTerminalInspector(surface: ghostty_surface_t) {
             let action = "inspector:toggle"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
 
         func resetTerminal(surface: ghostty_surface_t) {
             let action = "reset"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 logger.warning("action failed action=\(action)")
             }
         }
diff --git a/macos/Sources/Ghostty/Ghostty.Config.swift b/macos/Sources/Ghostty/Ghostty.Config.swift
index f380345c7..2df0a8656 100644
--- a/macos/Sources/Ghostty/Ghostty.Config.swift
+++ b/macos/Sources/Ghostty/Ghostty.Config.swift
@@ -105,7 +105,7 @@ extension Ghostty {
         func keyboardShortcut(for action: String) -> KeyboardShortcut? {
             guard let cfg = self.config else { return nil }
 
-            let trigger = ghostty_config_trigger(cfg, action, UInt(action.count))
+            let trigger = ghostty_config_trigger(cfg, action, UInt(action.lengthOfBytes(using: .utf8)))
             return Ghostty.keyboardShortcut(for: trigger)
         }
 #endif
@@ -120,7 +120,7 @@ extension Ghostty {
             guard let config = self.config else { return .init() }
             var v: CUnsignedInt = 0
             let key = "bell-features"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .init() }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .init() }
             return .init(rawValue: v)
         }
 
@@ -128,7 +128,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = true;
             let key = "initial-window"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -136,7 +136,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false;
             let key = "quit-after-last-window-closed"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -144,7 +144,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: UnsafePointer<Int8>? = nil
             let key = "title"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             guard let ptr = v else { return nil }
             return String(cString: ptr)
         }
@@ -153,7 +153,7 @@ extension Ghostty {
             guard let config = self.config else { return "" }
             var v: UnsafePointer<Int8>? = nil
             let key = "window-save-state"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return "" }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return "" }
             guard let ptr = v else { return "" }
             return String(cString: ptr)
         }
@@ -162,21 +162,21 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: Int16 = 0
             let key = "window-position-x"
-            return ghostty_config_get(config, &v, key, UInt(key.count)) ? v : nil
+            return ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) ? v : nil
         }
 
         var windowPositionY: Int16? {
             guard let config = self.config else { return nil }
             var v: Int16 = 0
             let key = "window-position-y"
-            return ghostty_config_get(config, &v, key, UInt(key.count)) ? v : nil
+            return ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) ? v : nil
         }
 
         var windowNewTabPosition: String {
             guard let config = self.config else { return "" }
             var v: UnsafePointer<Int8>? = nil
             let key = "window-new-tab-position"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return "" }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return "" }
             guard let ptr = v else { return "" }
             return String(cString: ptr)
         }
@@ -186,7 +186,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "window-decoration"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return WindowDecoration(rawValue: str)?.enabled() ?? defaultValue
@@ -196,7 +196,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: UnsafePointer<Int8>? = nil
             let key = "window-theme"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             guard let ptr = v else { return nil }
             return String(cString: ptr)
         }
@@ -205,7 +205,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false
             let key = "window-step-resize"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -213,7 +213,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false
             let key = "fullscreen"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -223,7 +223,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-non-native-fullscreen"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return switch str {
@@ -245,7 +245,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: UnsafePointer<Int8>? = nil
             let key = "window-title-font-family"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             guard let ptr = v else { return nil }
             return String(cString: ptr)
         }
@@ -255,7 +255,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-window-buttons"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacOSWindowButtons(rawValue: str) ?? defaultValue
@@ -266,7 +266,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-titlebar-style"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             return String(cString: ptr)
         }
@@ -276,7 +276,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-titlebar-proxy-icon"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacOSTitlebarProxyIcon(rawValue: str) ?? defaultValue
@@ -287,7 +287,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-dock-drop-behavior"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacDockDropBehavior(rawValue: str) ?? defaultValue
@@ -297,7 +297,7 @@ extension Ghostty {
             guard let config = self.config else { return false }
             var v = false;
             let key = "macos-window-shadow"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -306,7 +306,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-icon"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacOSIcon(rawValue: str) ?? defaultValue
@@ -318,7 +318,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-custom-icon"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             guard let path = NSString(utf8String: ptr) else { return defaultValue }
             return path.expandingTildeInPath
@@ -332,7 +332,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-icon-frame"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacOSIconFrame(rawValue: str) ?? defaultValue
@@ -342,7 +342,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: ghostty_config_color_s = .init()
             let key = "macos-icon-ghost-color"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             return .init(ghostty: v)
         }
 
@@ -350,7 +350,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: ghostty_config_color_list_s = .init()
             let key = "macos-icon-screen-color"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             guard v.len > 0 else { return nil }
             let buffer = UnsafeBufferPointer(start: v.colors, count: v.len)
             return buffer.map { .init(ghostty: $0) }
@@ -360,7 +360,7 @@ extension Ghostty {
             guard let config = self.config else { return .never }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-hidden"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .never }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .never }
             guard let ptr = v else { return .never }
             let str = String(cString: ptr)
             return MacHidden(rawValue: str) ?? .never
@@ -370,14 +370,14 @@ extension Ghostty {
             guard let config = self.config else { return false }
             var v = false;
             let key = "focus-follows-mouse"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
         var backgroundColor: Color {
             var color: ghostty_config_color_s = .init();
             let bg_key = "background"
-            if (!ghostty_config_get(config, &color, bg_key, UInt(bg_key.count))) {
+            if (!ghostty_config_get(config, &color, bg_key, UInt(bg_key.lengthOfBytes(using: .utf8)))) {
 #if os(macOS)
                 return Color(NSColor.windowBackgroundColor)
 #elseif os(iOS)
@@ -398,7 +398,7 @@ extension Ghostty {
             guard let config = self.config else { return 1 }
             var v: Double = 1
             let key = "background-opacity"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v;
         }
 
@@ -406,7 +406,7 @@ extension Ghostty {
             guard let config = self.config else { return 1 }
             var v: Int = 0
             let key = "background-blur"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v;
         }
 
@@ -414,7 +414,7 @@ extension Ghostty {
             guard let config = self.config else { return 1 }
             var opacity: Double = 0.85
             let key = "unfocused-split-opacity"
-            _ = ghostty_config_get(config, &opacity, key, UInt(key.count))
+            _ = ghostty_config_get(config, &opacity, key, UInt(key.lengthOfBytes(using: .utf8)))
             return 1 - opacity
         }
 
@@ -423,9 +423,9 @@ extension Ghostty {
 
             var color: ghostty_config_color_s = .init();
             let key = "unfocused-split-fill"
-            if (!ghostty_config_get(config, &color, key, UInt(key.count))) {
+            if (!ghostty_config_get(config, &color, key, UInt(key.lengthOfBytes(using: .utf8)))) {
                 let bg_key = "background"
-                _ = ghostty_config_get(config, &color, bg_key, UInt(bg_key.count));
+                _ = ghostty_config_get(config, &color, bg_key, UInt(bg_key.lengthOfBytes(using: .utf8)));
             }
 
             return .init(
@@ -444,7 +444,7 @@ extension Ghostty {
 
             var color: ghostty_config_color_s = .init();
             let key = "split-divider-color"
-            if (!ghostty_config_get(config, &color, key, UInt(key.count))) {
+            if (!ghostty_config_get(config, &color, key, UInt(key.lengthOfBytes(using: .utf8)))) {
                 return Color(newColor)
             }
 
@@ -460,7 +460,7 @@ extension Ghostty {
             guard let config = self.config else { return .top }
             var v: UnsafePointer<Int8>? = nil
             let key = "quick-terminal-position"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .top }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .top }
             guard let ptr = v else { return .top }
             let str = String(cString: ptr)
             return QuickTerminalPosition(rawValue: str) ?? .top
@@ -470,7 +470,7 @@ extension Ghostty {
             guard let config = self.config else { return .main }
             var v: UnsafePointer<Int8>? = nil
             let key = "quick-terminal-screen"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .main }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .main }
             guard let ptr = v else { return .main }
             let str = String(cString: ptr)
             return QuickTerminalScreen(fromGhosttyConfig: str) ?? .main
@@ -480,7 +480,7 @@ extension Ghostty {
             guard let config = self.config else { return 0.2 }
             var v: Double = 0.2
             let key = "quick-terminal-animation-duration"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -488,7 +488,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = true
             let key = "quick-terminal-autohide"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -496,7 +496,7 @@ extension Ghostty {
             guard let config = self.config else { return .move }
             var v: UnsafePointer<Int8>? = nil
             let key = "quick-terminal-space-behavior"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .move }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .move }
             guard let ptr = v else { return .move }
             let str = String(cString: ptr)
             return QuickTerminalSpaceBehavior(fromGhosttyConfig: str) ?? .move
@@ -506,7 +506,7 @@ extension Ghostty {
             guard let config = self.config else { return QuickTerminalSize() }
             var v = ghostty_config_quick_terminal_size_s()
             let key = "quick-terminal-size"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return QuickTerminalSize() }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return QuickTerminalSize() }
             return QuickTerminalSize(from: v)
         }
         #endif
@@ -515,7 +515,7 @@ extension Ghostty {
             guard let config = self.config else { return .after_first }
             var v: UnsafePointer<Int8>? = nil
             let key = "resize-overlay"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return .after_first }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return .after_first }
             guard let ptr = v else { return .after_first }
             let str = String(cString: ptr)
             return ResizeOverlay(rawValue: str) ?? .after_first
@@ -526,7 +526,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "resize-overlay-position"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return ResizeOverlayPosition(rawValue: str) ?? defaultValue
@@ -536,7 +536,7 @@ extension Ghostty {
             guard let config = self.config else { return 1000 }
             var v: UInt = 0
             let key = "resize-overlay-duration"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v;
         }
 
@@ -544,7 +544,7 @@ extension Ghostty {
             guard let config = self.config else { return .seconds(5) }
             var v: UInt = 0
             let key = "undo-timeout"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return .milliseconds(v)
         }
 
@@ -552,7 +552,7 @@ extension Ghostty {
             guard let config = self.config else { return nil }
             var v: UnsafePointer<Int8>? = nil
             let key = "auto-update"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return nil }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return nil }
             guard let ptr = v else { return nil }
             let str = String(cString: ptr)
             return AutoUpdate(rawValue: str)
@@ -563,7 +563,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "auto-update-channel"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return AutoUpdateChannel(rawValue: str) ?? defaultValue
@@ -573,7 +573,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false;
             let key = "macos-auto-secure-input"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -581,7 +581,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false;
             let key = "macos-secure-input-indication"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -589,7 +589,7 @@ extension Ghostty {
             guard let config = self.config else { return true }
             var v = false;
             let key = "maximize"
-            _ = ghostty_config_get(config, &v, key, UInt(key.count))
+            _ = ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8)))
             return v
         }
 
@@ -598,7 +598,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "macos-shortcuts"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return MacShortcuts(rawValue: str) ?? defaultValue
@@ -609,7 +609,7 @@ extension Ghostty {
             guard let config = self.config else { return defaultValue }
             var v: UnsafePointer<Int8>? = nil
             let key = "scrollbar"
-            guard ghostty_config_get(config, &v, key, UInt(key.count)) else { return defaultValue }
+            guard ghostty_config_get(config, &v, key, UInt(key.lengthOfBytes(using: .utf8))) else { return defaultValue }
             guard let ptr = v else { return defaultValue }
             let str = String(cString: ptr)
             return Scrollbar(rawValue: str) ?? defaultValue
diff --git a/macos/Sources/Ghostty/SurfaceView.swift b/macos/Sources/Ghostty/SurfaceView.swift
index 5a746a2c7..c3726ad32 100644
--- a/macos/Sources/Ghostty/SurfaceView.swift
+++ b/macos/Sources/Ghostty/SurfaceView.swift
@@ -440,14 +440,14 @@ extension Ghostty {
                         let action = modifiers.contains(.shift)
                         ? "navigate_search:previous"
                         : "navigate_search:next"
-                        ghostty_surface_binding_action(surface, action, UInt(action.count))
+                        ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))
                         return .handled
                     }
 
                     Button(action: {
                         guard let surface = surfaceView.surface else { return }
                         let action = "navigate_search:next"
-                        ghostty_surface_binding_action(surface, action, UInt(action.count))
+                        ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))
                     }) {
                         Image(systemName: "chevron.up")
                     }
@@ -456,7 +456,7 @@ extension Ghostty {
                     Button(action: {
                         guard let surface = surfaceView.surface else { return }
                         let action = "navigate_search:previous"
-                        ghostty_surface_binding_action(surface, action, UInt(action.count))
+                        ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))
                     }) {
                         Image(systemName: "chevron.down")
                     }
diff --git a/macos/Sources/Ghostty/SurfaceView_AppKit.swift b/macos/Sources/Ghostty/SurfaceView_AppKit.swift
index 83e66ab81..03ef293af 100644
--- a/macos/Sources/Ghostty/SurfaceView_AppKit.swift
+++ b/macos/Sources/Ghostty/SurfaceView_AppKit.swift
@@ -88,13 +88,13 @@ extension Ghostty {
                         .sink { [weak self] needle in
                             guard let surface = self?.surface else { return }
                             let action = "search:\(needle)"
-                            ghostty_surface_binding_action(surface, action, UInt(action.count))
+                            ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))
                         }
                 } else if oldValue != nil {
                     searchNeedleCancellable = nil
                     guard let surface = self.surface else { return }
                     let action = "end_search"
-                    ghostty_surface_binding_action(surface, action, UInt(action.count))
+                    ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))
                 }
             }
         }
@@ -1448,7 +1448,7 @@ extension Ghostty {
         @IBAction func copy(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "copy_to_clipboard"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1456,7 +1456,7 @@ extension Ghostty {
         @IBAction func paste(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "paste_from_clipboard"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1465,7 +1465,7 @@ extension Ghostty {
         @IBAction func pasteAsPlainText(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "paste_from_clipboard"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1473,7 +1473,7 @@ extension Ghostty {
         @IBAction func pasteSelection(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "paste_from_selection"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1481,7 +1481,7 @@ extension Ghostty {
         @IBAction override func selectAll(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "select_all"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1489,7 +1489,7 @@ extension Ghostty {
         @IBAction func find(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "start_search"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1497,7 +1497,7 @@ extension Ghostty {
         @IBAction func findNext(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "search:next"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1505,7 +1505,7 @@ extension Ghostty {
         @IBAction func findPrevious(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "search:previous"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1513,7 +1513,7 @@ extension Ghostty {
         @IBAction func findHide(_ sender: Any?) {
             guard let surface = self.surface else { return }
             let action = "end_search"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1541,7 +1541,7 @@ extension Ghostty {
         @objc func resetTerminal(_ sender: Any) {
             guard let surface = self.surface else { return }
             let action = "reset"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }
@@ -1549,7 +1549,7 @@ extension Ghostty {
         @objc func toggleTerminalInspector(_ sender: Any) {
             guard let surface = self.surface else { return }
             let action = "inspector:toggle"
-            if (!ghostty_surface_binding_action(surface, action, UInt(action.count))) {
+            if (!ghostty_surface_binding_action(surface, action, UInt(action.lengthOfBytes(using: .utf8)))) {
                 AppDelegate.logger.warning("action failed action=\(action)")
             }
         }