MD> символов несколько, а внешне глиф — один

Кодепоинтов несколько. Я бы не сказал, что символов.

https://stackoverflow.com/questions/27331819/whats-the-difference-between-a-character-a-code-point-a-glyph-and-a-grapheme

Кроме того, не надо мне тыкать глифами. Глиф — это только часть графемы:

A glyph is an image, usually stored in a font (which is a collection of glyphs), used to represent graphemes or parts thereof.

A grapheme is a sequence of one or more code points that are displayed as a single, graphical unit that a reader recognizes as a single element of the writing system.

character is an individual unit of text composed of one or more graphemes

MD> символов несколько, а внешне глиф — один

Кодепоинтов несколько. Я бы не сказал, что символов.

https://stackoverflow.com/questions/27331819/whats-the-difference-between-a-character-a-code-point-a-glyph-and-a-grapheme

Кроме того, не надо мне тыкать глифами. Глиф — это только часть графемы:

A glyph is an image, usually stored in a font (which is a collection of glyphs), used to represent graphemes or parts thereof.

A grapheme is a sequence of one or more code points that are displayed as a single, graphical unit that a reader recognizes as a single element of the writing system.

character is an individual unit of text composed of one or more graphemes.
Unicode provides rules for the interpretation of juxtaposed graphemes as individual characters.