glyphCheck

Whether a capture refuses to photograph text the font cannot draw, instead of letting the host draw it. Unset by default. Becomes the viddik.glyphCheck system property.

A glyph missing from the font is resolved by whatever the machine has installed, so the golden is stable where it was recorded and different elsewhere — and the pixels that move are the ones after the character, which is why it is usually diagnosed as something else entirely.

Off by default because the check can only read one font: turn it on in a module themed with viddikTypography(), or point glyphCheckFont at the font the module bundles itself.