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8 changes: 6 additions & 2 deletions packages/maker/dmg/src/MakerDMG.ts
Original file line number Diff line number Diff line change
Expand Up @@ -33,11 +33,15 @@ export default class MakerDMG extends MakerBase<MakerDMGConfig> {
);

await this.ensureFile(outPath);
// Escape appName and appPath by wrapping them in quotes.
// This avoids macOS treating spaces as argument separators during
// DMG creation (fixes issue #4055).
const escapedAppPath = `"${path.resolve(dir, `${appName}.app`)}"`;
const dmgConfig: ElectronInstallerDMGOptions = {
overwrite: true,
name: appName,
name: `"${appName}"`, // escaped name
...this.config,
appPath: path.resolve(dir, `${appName}.app`),
appPath: escapedAppPath, // escaped app path
out: path.dirname(outPath),
};
await createDMG(dmgConfig);
Expand Down