Cannot create breakpoint: -break-insert: Garbage following <location>

[GabrielMajeri]

Describe the bug
I've tried to use gdbgui to debug a simple Rust program. Adding a breakpoint through the GUI leads to the -break-insert: Garbage following <location> error message.

I've searched the internet and apparently this was related to spaces in the project's path. Moving the executable and source code to a new path, with no spaces, fixes the issue.

To Reproduce
Steps to reproduce the behavior:

1. Create a new Rust project, with spaces in the directory path
2. Run gdbgui target/debug/<project name>
3. Notice that trying to add a breakpoint through the GUI does not work

Expected behavior
gdbgui should work with paths with spaces in its names. If this is a limitation of GDB, then it should at least warn the user.

Please complete the following information:

• OS: Arch Linux x86_64
• gdbgui version: 0.12.0.0
• gdb version: 8.1
• browser [e.g. chrome, safari]: latest stable Chromium
• python packages (pip freeze):

click==6.7
Flask==0.12.4
Flask-Compress==1.4.0
Flask-SocketIO==2.9.6
gdbgui==0.12.0.0
gevent==1.3.4
greenlet==0.4.13
itsdangerous==0.24
pygdbmi==0.8.3.0
python-engineio==2.2.0
python-socketio==2.0.0
Werkzeug==0.14.1

[cs01]

Thanks for filing, working on a fix now.