Issue when uploading on MacOS with path containing white space / blank

[gerardwr]

Describe the bug
Upload to STM32 (maple_upload) fails when stm32duino is installed in a directory with a name containing a blank / white space.

To Reproduce

STM32duino installed in directory (space in "My Data"):

/Users/gerard/Documents/My Data/ArduinoESP/hardware/Arduino_STM32-master

Upload results in (sorry, is in Dutch):

De schets gebruikt 16132 bytes (12%)  programma-opslagruimte. Maximum is 131072 bytes.
Globale variabelen gebruiken 3088 bytes (15%) van het dynamisch geheugen. Resteren 17392 bytes voor lokale variabelen. Maximum is 20480 bytes.
/Users/gerard/Documents/My Data/ArduinoESP/hardware/Arduino_STM32-master/tools/macosx/maple_upload cu.usbmodemFA411 2 1EAF:0003 /var/folders/5l/fjrz26dn5710yvf5hgzlcvsw0000gn/T/arduino_build_316844/HelloWorld_STM32.ino.bin 
/Users/gerard/Documents/My Data/ArduinoESP/hardware/Arduino_STM32-master/tools/macosx/maple_upload: line 34: /Users/gerard/Documents/My: No such file or directory
Er trad een error op gedurende laden van de schets

Desktop (please complete the following information):

• OS: MacOs
• Arduino IDE version: [1.8.7]
• STM32 core version: [1.5.0]
• Upload method: [STM32 bootloader]

Board (please complete the following information):

• Name: [Blue Pill]

** Workaround
As a quick fix I adapted the maple_upload source:

• Line 34 : replaced $(dir) with "${DIR}"
• Lines 44,48,53 : replaced ${DFU_UTIL} with "${DFU_UTIL}"

I'm sure there's a neater way to fix the issue, but the quick fix worked for me.

• Desired solution
  Fix STM32duino so that blanks in paths are supported out-of-the-box.

[fpistm]

I saw your issue in stm32duino bootloader repo.
Roger told you to open issue on the right repo. This is not this one.
You use Roger's core Arduino_STM32:

/Users/gerard/Documents/My Data/ArduinoESP/hardware/Arduino_STM32-master/tools/macosx/maple_upload cu.usbmodemFA411 2 1EAF:0003 /var/folders/5l/fjrz26dn5710yvf5hgzlcvsw0000gn/T/arduino_build_316844/HelloWorld_STM32.ino.bin

So the right place is:
https://github.com/rogerclarkmelbourne/Arduino_STM32