Your system information

• Steam client version (build number or date): Built Jan 19 2019
• Distribution (e.g. Ubuntu): SolusOS
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Folder names with spaces cause issues when adding Non-Steam games.

If you add a Non-Steam game with a space in the path, Steam will cut off the "Target:" before the space and place the rest of the path within the "SET LAUNCH OPTIONS"

Steps for reproducing this issue:

1. Add Non-Steam game to library with path containing space(s)
   (example: /data/game folder/game.exe)
2. "Target:" becomes "/data/game"
3. "SET LAUNCH OPTIONS" becomes "folder/game.exe"
4. Launching game from library does nothing