> The escaped quotes look better in Sublime Text :smiley: but I can change them if you think it's better not to escape...

No, was just a tip, when you have too much escape it can be unreadable, and people tends to forgot you can even use single line triple quote also.

> Is that because the mac commandline call is different?

Yes, `dmg`'ed installed inkscape need the full path to executable. only homebrew'd / marported one are in $PATH