Redefine Section to include Hypertarget and tooltip

Question

I would like section and subsection to automatically create a hypertarget (for external url linking into the pdf) and a pdftooltip, that displays the url (so the url is discoverable)

\section{\pdftooltip{Common Pressed Meats}{\#Common-Pressed-Meats}}\hypertarget{Common-Pressed-Meats}{}
\hypertarget{Canned-Pressed-Spam}{\subsection{\pdftooltip{Canned \& Pressed Spam}{\#Canned-Pressed-Spam}}}

Either of these lines work for me, my question us how to redefine \section and \subsection so that \section{Common Pressed Meats} will output one of the above, and to do the conversion from heading text (with symbols) to valid url without symbols, [Damn they almost work - pdfbookmark ia "Common Pressed Meats#Common-Pressed-Meats"]

Here is MWE for pdflatex

\documentclass[english]{scrartcl}
\usepackage[latin9]{inputenc}
\usepackage{babel}
\usepackage[unicode=true,pdfusetitle,
 bookmarks=true,bookmarksnumbered=true,bookmarksopen=true,bookmarksopenlevel=1,
 breaklinks=true,pdfborder={0 0 1},backref=section,colorlinks=false]
 {hyperref}

\makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
\usepackage{pdfcomment}

\makeatother

\begin{document}
\section{\pdftooltip{Common Pressed Meats}{\#Common-Pressed-Meats}}\hypertarget{Common-Pressed-Meats}{}

The hypertarget is Common-Pressed-Meats or from the internet http://www.spam.com\#Common-Pressed-Meats

\hypertarget{Canned-Pressed-Spam}{\subsection{\pdftooltip{Canned \& Pressed Spam}{\#Canned-Pressed-Spam}}}

Invalid and special URL chars (i.e. most symbols) in the heading text
must be removed from the hypertarget and replaced with dash -

\hypertarget{Other-Pressed-Meats}{\section{\pdftooltip{Other Pressed Meats}{\#Other-Pressed-Meats}}}

The tooltip is over the heading text, and shows the hypertarget preceded
by \#
\end{document}

What am I trying to do and Why?

I have documentation, in pdf, on the net. It is detailed and typically 5-50 pages long. When dealing with technical queries part of the answer is in the documentation. I need to be able to send a link that goes directly to the part of the document that explains my point. The link (url from internet, or Named-Destination in pdf terminology) needs to be human meaningful, and my answer should still be useful in 3 months time when the document has been revised (which rules out "section.2.1.3". Me and any other users need to quickly an easily know what the url is when reading the pdf. This is why have tootip. Otherwise the named destinations are too difficult to be useful Note that I am not interested in using the hypertarget internally within the latex/pdf

Answer 1

If you want more symbolic anchor names, you can use the extended optional argument feature of KOMA-Script (see option headings=optiontotocandhead in the examples below) and add a new key to generate the hyper targets:

\documentclass[
  headings=optiontotocandhead% Switch on extended optional arguments for headings
]{scrartcl}[2017/04/13]% Need at least KOMA-Script v3.23
\usepackage{hyperref}
\usepackage{lipsum}

\DefineFamilyKey[.section]{KOMAarg}{hypertarget}{%
  \hypertarget{#1}{}%
}

\begin{document}
\section[hypertarget={First.Section.Name}]{First Section Name}
\lipsum[1]
\section[hypertarget={Example.Section}]{Example Section}
\lipsum[2]
\section[hypertarget={Final.Section}]{Final Section}
See \hyperlink{First.Section.Name}{the first section} or
\hyperlink{Example.Section}{the second section} or
\hyperlink{Final.Section}{this final section}.
\end{document}

To also add a tool tip you could try something like:

\documentclass[
  headings=optiontotocandhead% Switch on extended optional arguments for headings
]{scrartcl}[2017/04/13]% Need at least KOMA-Script v3.23
\usepackage{hyperref}
\usepackage{pdfcomment}
\usepackage{lipsum}

\FamilyStringKey[.section]{KOMAarg}{hypertarget}{\currenthypertarget}
\newcommand*{\currenthypertarget}{}
\makeatletter
\renewcommand*{\sectionlinesformat}[4]{%
  \ifx\currenthypertarget\@empty
    \def\currenthypertarget{#1.\csname the#1\endcsname}%
  \fi  
  \hypertarget{\currenthypertarget}{}\@hangfrom{\hskip
    #2#3}{\pdftooltip{#4}{\#\currenthypertarget}}%
  \global\let\currenthypertarget\@empty
}
\makeatother

\begin{document}
\section[hypertarget={First.Section.Name}]{First Section Name}
\lipsum[1]
\section[hypertarget={Example.Section}]{Example Section}
\lipsum[2]
\section[hypertarget={Final.Section}]{Final Section}
See \hyperlink{First.Section.Name}{the first section} or
\hyperlink{Example.Section}{the second section} or
\hyperlink{Final.Section}{this final section}.
\end{document}

With Adobe Reader this second example gives, e.g.,

The example PDF has been made using scrartcl 2017/04/13 v3.23.