[Tex/LaTex] Making nice aligned glossaries

Question

Consider the MWE below (mystyle credit post here for increasing the horizontal spacing).

How can I change mystyle, so that the indentation is the same for multiple lines (red lines), and how can I change so that all entries on a page are aligned (green line)?

Is it e.g. possible to specify 5 cm width for the name/key. If it is longer it is broken (paragraph wrap like "p" in tables) in multiple rows.

So I am looking for a 'table' style for glossary.

Thanks

MWE

\documentclass{book}
\usepackage[savewrites,nonumberlist, seeautonumberlist]{glossaries}
\usepackage{glossary-mcols}
\newglossarystyle{mystyle}{%
  \glossarystyle{list}%
  \renewcommand*{\glossaryentryfield}[5]{%
    \item[\glsentryitem{##1}\glstarget{##1}{##2}]%
       \hspace{1cm}##3\glspostdescription\space ##5}%
}
\makeglossaries
\newglossaryentry{examp}{name={Short},%
    description={Just showing what I mean},%
}
\newglossaryentry{examp2}{name={A bit longer},%
    description={asd asd ad das dsd asd asd ads das dasdsa das das dsa das das dsa dsa dsa dsa d as asddas ads dsa das dsa as sda dsa dsa dsa d sa dsa dsa},%
}

\begin{document}
\printglossary[style=mystyle]
\end{document}

Answer 1

You can use a style based upon the long style (which actually is a longtable. I used 3cm instead of 5cm; that looks enough.

\documentclass{book}
\usepackage[savewrites,nonumberlist, seeautonumberlist]{glossaries}
\newglossarystyle{mystyle}{%
  \glossarystyle{long}%
  \renewenvironment{theglossary}%
     {\begin{longtable}{p{3cm}p{\glsdescwidth}}}%
     {\end{longtable}}%
}

\makeglossaries
\newglossaryentry{examp}{name={Short},%
    description={Just showing what I mean},%
}
\newglossaryentry{examp2}{name={A bit longer},%
    description={asd asd ad das dsd asd asd ads das dasdsa das das dsa das das dsa dsa dsa dsa d as asddas ads dsa das dsa as sda dsa dsa dsa d sa dsa dsa},%
}

\begin{document}
\glsaddall
\printglossary[style=mystyle]
\end{document}