Normalize mpv args only when safe on Windows

launcher/mpv.ts

@@ -705,7 +705,9 @@ export async function startMpv(
   mpvArgs.push(`--input-ipc-server=${socketPath}`);
   mpvArgs.push(target);
 
-  const mpvTarget = resolveCommandInvocation('mpv', mpvArgs);
+  const mpvTarget = resolveCommandInvocation('mpv', mpvArgs, {
+    normalizeWindowsShellArgs: false,
+  });
   state.mpvProc = spawn(mpvTarget.command, mpvTarget.args, { stdio: 'inherit' });
 }
 
@@ -1147,7 +1149,9 @@ export function launchMpvIdleDetached(
     );
     mpvArgs.push(`--log-file=${getMpvLogPath()}`);
     mpvArgs.push(`--input-ipc-server=${socketPath}`);
-    const mpvTarget = resolveCommandInvocation('mpv', mpvArgs);
+    const mpvTarget = resolveCommandInvocation('mpv', mpvArgs, {
+      normalizeWindowsShellArgs: false,
+    });
     const proc = spawn(mpvTarget.command, mpvTarget.args, {
       stdio: 'ignore',
       detached: true,

launcher/util.ts

@@ -244,13 +244,19 @@ export function inferWhisperLanguage(langCodes: string[], fallback: string): str
   return fallback;
 }
 
+export interface CommandInvocationOptions {
+  normalizeWindowsShellArgs?: boolean;
+}
+
 export function resolveCommandInvocation(
   executable: string,
   args: string[],
+  options: CommandInvocationOptions = {},
 ): { command: string; args: string[] } {
   if (process.platform !== 'win32') {
     return { command: executable, args };
   }
+  const { normalizeWindowsShellArgs = true } = options;
 
   const resolvedExecutable = resolveExecutablePath(executable) ?? executable;
   const extension = path.extname(resolvedExecutable).toLowerCase();
@@ -267,7 +273,9 @@ export function resolveCommandInvocation(
       command: bashTarget.command,
       args: [
         normalizeWindowsShellArg(resolvedExecutable, bashTarget.flavor),
-        ...args.map((arg) => normalizeWindowsShellArg(arg, bashTarget.flavor)),
+        ...args.map((arg) =>
+          normalizeWindowsShellArgs ? normalizeWindowsShellArg(arg, bashTarget.flavor) : arg,
+        ),
       ],
     };
   }
@@ -280,7 +288,9 @@ export function resolveCommandInvocation(
         command: bashTarget.command,
         args: [
           normalizeWindowsShellArg(resolvedExecutable, bashTarget.flavor),
-          ...args.map((arg) => normalizeWindowsShellArg(arg, bashTarget.flavor)),
+          ...args.map((arg) =>
+            normalizeWindowsShellArgs ? normalizeWindowsShellArg(arg, bashTarget.flavor) : arg,
+          ),
         ],
       };
     }