Re: [PATCH 2/5] tests: respect GIT_TEST_INSTALLED when initializing repositories

[Jeff King <peff@peff.net>]

On Wed, Nov 14, 2018 at 02:16:37PM +0100, Johannes Schindelin wrote:

> > Makes perfect sense.  Shouldn't we be asking where the template
> > directory of the installed version is and using it instead of the
> > freshly built one, no?
> 
> It would make sense, but we don't know how to get that information, do we?
> 
> $ git grep DEFAULT_GIT_TEMPLATE_DIR
> Makefile:       -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"'
> builtin/init-db.c:#ifndef DEFAULT_GIT_TEMPLATE_DIR
> builtin/init-db.c:#define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
> builtin/init-db.c:              template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
> contrib/vscode/init.sh: '-DDEFAULT_GIT_TEMPLATE_DIR="$(template_dir_SQ)"' \
> 
> In other words, the Makefile defines the DEFAULT_GIT_TEMPLATE_DIR, and the
> only user in the code is init-db.c which uses it in copy_templates().
> 
> And changing the code *now* to let us query Git where it thinks its
> templates should be won't work, as this patch is about using the installed
> Git (at whatever pre-compiled version that might be).

Do we actually care where the templates are? I thought the point was to
override for the built Git to use the built templates instead of the
installed one. For an installed Git, shouldn't we not be overriding the
templates at all? I.e.:

  if test -n "$GIT_TEST_INSTALLED"
  then
	"$GIT_TEST_INSTALLED/git" init
  else
	"$GIT_ExEC_PATH/git" init --template="$GIT_BUILD_DIR/templates/blt"
  fi >&3 2>&4

(That's all leaving aside the question of whether we ought to be using a
clean template dir instead of this).

-Peff