Some non-Latin-based scripts(alphabets) have more detail in their glyphs than do the Latin-based-script equivalents, and typically need a larger font to give the same degree of legibility (resolution-wise).

Sometimes, both script types need to be present in the same file.

Notepad++ allows different font SIZES (and colour, etc) courtesy of syntax-highlighting. This allows me to display larger-fonted non-Latin-based script in a // BIG-FONT comment.
Although this has been quite handy for me in some situations, it is quite limited.

A Word Processor can handle this scenario, but I'm not interested in that.
I want a nice simple(?) plain(?) Text Editor to do it... on a per script-type basis... eg. mixing Latin-1 and Devanagari (and Mandarin, and ...

Such a thing may not exits, but Notepad++ has shown that a simple(?) plain(?) Text Editor is capable of it.

Does anyone know of such a Text Editor?
...Q. Why not a Word Processor?
...A. Because GCC and Python don't like that format! but UTF-8 is fine.