feat: Preventing substitutions

[ldez]

Description

Preventing substitutions:

• characters
• attribute reference
• anchor macro
• image macro
• kbd macro
• link macro
• menu macro
• stem macro

  Syntax example

\§ will appear as an entity, not the § symbol. FAILED
\{two-semicolons} will appear {two-semicolons}, not resolved as ;;. FAILED

\[[idname]] foo  [[idname]]
\anchor:idname[] foo anchor:idname[]
\stem:[x != 0] foo stem:[x != 0]
\asciimath:[x != 0] foo asciimath:[x != 0]
\latexmath:[\sqrt(1) = 2] foo latexmath:[\sqrt(1) = 2]
\kbd:[Save] foo kbd:[Save]
\menu:File[New...] foo menu:File[New...]
\link:path[label] foo link:path[label]

Screenshots

[nicorikken]

Nice, I also observed this needed to be done. Nice cleanup!

[mojavelinux]

:+1: