Backup font for missing characters when drawing text

Description of the request

I want to use a specific font but also draw characters which are not available in that font. Replace them with characters from another "generic" font, like Arial-Bold for example.
Similarly to how web browsers work when they are missing characters from fonts - the OS fills that void from a default font.

from PIL import Image, ImageFont, ImageDraw


temp_canvas = Image.new("RGBA", (1200, 300), (255, 255, 255, 255))
draw_canvas = ImageDraw.Draw(temp_canvas, "RGBA")

font = ImageFont.truetype(r"C:\fonts\BarlowSemiCondensed-Bold.ttf", size=150)
text_string = "hello ಠಠ world"

draw_canvas.text((100, 100), text_string, fill="#000000", font=font)

temp_canvas.show()

The output is:

Proposed solution

Add an argument to ImageDraw.Draw().text() like backup_font , which would be used when the first font doesn't have the character specified in text_string . Like ಠ in this example

Start at the ImageDraw.Draw().text() entry point described in the request and inspect how the supplied font handles characters missing from its glyph set. Done means text can use a specified backup font for missing characters, including the shown ಠ example, while preserving the primary font for supported characters.