Automatic conversion of ¥ to \ on Japanese keyboard systems?

[phschury]

On Japanese keyboards, the backslash symbol (Unicode U+005C) key is replaced by a yen symbol (Unicode U+00A5) key. To input a backslash symbol requires pressing an alternate key in combination with the yen symbol key. I used to use TeXShop and it had a wonderful feature of automatically re-interpreting the yen symbol as a backslash symbol. I inquired with Overleaf about adding this feature, but they seemed disinclined. Would it be a terrible effort to incorporate into the Electron layer or such?