Bad rendering: go-grip (grip) vs Github preview

[Disonantemus]

As a reimplementation of grip but local (without inet), is almost the same with my test files. But right now is not the same as GitHub markdown preview (GFM):

Bad rendering examples (GFM vs grip/go-grip):

GFM don't need two-spaces at the end of line for lineabreaks:

1st line. 2nd line.

Numbered Start (Lists), should be: 57 & 58

57. foo
58. bar

Smart Typography: in GFM should not be recognized

(c) (C) copyright
(r) (R) registered
(tm) (TM) trademark

HTML Symbol Entities inside linecode

© ©
— —
™ ™

HTML Symbol Entities
Character Entities for HTML, CSS and Javascript

€ ¥ £ $ ¢ & ©
¾ ± ∑ ∫ ≤ ≈ ∠
Æ Ď ⇒ ↓ λ Γ

‡ — ⟨ ⟩ ♠
Œ æ ö
℘ ℑ ℜ ℵ
# Ӓ Ϡ � "

ℋ ∲ ⅆ
⮝ ⌈ ⌋  
ആ ಫ

Definition List: not supported in GFM but rendered ok in go-grip.

Apple : Pomaceous fruit of plants of the genus Malus in the family Rosaceae.

: An American computer company.

Orange : The fruit of an evergreen tree of the genus Citrus.

First Term : This is the definition of the first term.

Second Term : This is one definition of the second term. : This is another definition of the second term.

Emojis

Camping :tent: Be back soon. That is so funny! :joy:

Classic markup:
:wink: :cry: :laughing: :yum: :tm:

Math (Inline)

This is an inline $f(x)$ function. This is a block $$f(x)$$ function.

Math: KaTeX

$\sqrt{3x-1}+(1+x)^2$

Math Block \\[...\\]

$${e}^{i\pi }+1=0$$

Flow Charts (Mermaid)

graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

Headerless: GFM does not support this, but grip does!

|--|--|--|--|--|--|--|--| |♜| |♝|♛|♚|♝|♞|♜| | |♟|♟|♟| |♟|♟|♟| |♟| |♞| | | | | | | |♗| | |♟| | | | | | | | |♙| | | | | | | | | |♘| | | |♙|♙|♙|♙| |♙|♙|♙| |♖|♘|♗|♕|♔| | |♖|

[chrishrb]

Oh I didn't know about this spec. I will implement the missing parts as soon as possible! Thanks for this hint.