Is there a motion for capturing text in between / or \? I know there is motions for other symbols ---
ci" - Capture 'text' inside "text"
vi( - Visual capture int var inside foo(int var)
di[ - Delete word [word] into []
The only workaround I can find is by using Vim Surround, and using it to change surrounding \ into " (cs\"), and then working from there. However, not only is it that kind of tedious, but the plugin only supports backslashes, not forward.
You could write your own text-object for this pretty easily.
onoremap <silent> i/ :<C-U>normal! T/vt/<CR> " inside /
onoremap <silent> a/ :<C-U>normal! F/vf/<CR> " around /
For it to work with visual mode :
xnoremap <silent> i/ :<C-U>normal! T/vt/<CR> " inside /
xnoremap <silent> a/ :<C-U>normal! F/vf/<CR> " around /
Similarly you could also do for \
Edit: Added info comments.