Re: Use of a mailmap file with git-log

Antoine Pelisse [off-list ref] writes:

Yet I'm afraid it could be:
1. expensive to rewrite all commit log (reallocating the buffer)
2. Inappropriate to change the value in function that is supposed to
read

In my suggestion I avoided rewriting the log buffer, primarily
because of #2 (in addition to "read" cleanliness, such a change may
break the gpg signature checking for merges).

We do reencode the contents before we write it out when "encoding"
is present, so logically such a rewrite of authors and committers
belongs to where that happens, in pretty_print_commit().  Note that
this existing rewrite is not done to the commit log buffer but is to
a separate buffer meant to be used only for output.