import of olds chapters

chap/GIT.tex

@@ -6,8 +6,10 @@ aux quatre coins des interwebs. Je ne vais donc pas m'étendre
 plus que ça, pour passer tout de suite à un cas particulier
 \footnote{que je n'arrive pas encore à vraiment maitriser}.
 
+% --------------------------------------------------------------------
 \section{Démarrage}
 
+\subsection{En local}
 \begin{verbatim}
 $ mkdir Foo
 $ cd Foo/
@@ -17,7 +19,7 @@ $ git add README.txt
 \end{verbatim}
 
 
-\section{Setup du serveur}
+\subsection{Setup du serveur}
 
 Sur le serveur distant, dans un endroit accessible par
 le protocole \texttt{HTTP}, il faut créer le dépot.
@@ -33,16 +35,53 @@ Et ensuite :
 $ git update-server-info
 \end{verbatim}
 
-\section{Pousser le code}
+% --------------------------------------------------------------------
+\subsection{Pousser le code}
 
 Notre commit\index{commit} local semble pertinent,
 il est temps de le faire connaitre au monde.
 
-
 \begin{verbatim}
 $ git push yuser@serveur:/chemin/vers/le/depot/Foo
 \end{verbatim}
 
+% --------------------------------------------------------------------
+
+\section{Configuration dynamique}
+
+\texttt{http://sandrotosi.blogspot.com/2020/10/multiple-git-configurations-depending.html}
+
+One way to change the user.email git config value is to git config --local
+in every repo, but that's tedious, error-prone and
+doesn't scale very well with many repositories
+(and the chances to forget to set the right one on a new repo are ~100\%).
+
+The solution is to use the git-config ability to include
+extra configuration files, based on the repo path, by using includeIf:
+\vspace{1em}
+
+Content of \texttt{\$HOME/.gitconfig} :
+
+\begin{verbatim}
+[user]
+    name = Sandro Tosi
+    email = <personal.address>@gmail.com
+
+[includeIf "gitdir:~/deb/"]
+    path = ~/.gitconfig-deb
+\end{verbatim}
+
+Every time the git path is in ~/deb/ (which is where i have all Debian repos)
+the file ~/.gitconfig-deb will be included; its content:
+
+\begin{verbatim}
+[user]
+    email = morph@debian.org
+\end{verbatim}
+
+That results in my personal address being used on all repos not part of Debian, where i use my Debian email address. This approach can be extended to every other git configuration values.
+% --------------------------------------------------------------------
+
 \section{Krkrkr...}
 
 Tout cela semble bien compliqué.