Can I configure git so it does not guess user.email configuration settings?

Question

On my system I don\'t have the user.email git configuration value set at the global level, on purpose. Instead, I configure it individually in each sandbox. This is

Answer 1

It doesn't look like this is possible. From git-commit-tree(1):

   While parent object ids are provided on the command line, author and committer
   information is taken from the following environment variables, if set:

       GIT_AUTHOR_NAME
       GIT_AUTHOR_EMAIL
       GIT_AUTHOR_DATE
       GIT_COMMITTER_NAME
       GIT_COMMITTER_EMAIL
       GIT_COMMITTER_DATE
       EMAIL

   (nb "<", ">" and "\n"s are stripped)

   In case (some of) these environment variables are not set, the information is
   taken from the configuration items user.name and user.email, or, if not
   present, system user name and the hostname used for outgoing mail (taken from
   /etc/mailname and falling back to the fully qualified hostname when that file
   does not exist).

Perhaps it's easier for you to configure environment variables for each sandbox?