Re: [PATCH v3 3/3] ci: stop linking built-ins to the dashed versions

> On Wed, Aug 26, 2020 at 11:56:52AM +0000, Johannes Schindelin via GitGitGadget wrote:
> > From: Johannes Schindelin <johannes.schindelin@gmx.de>
> >
> > Originally, all of Git's subcommands were implemented in their own
> > executable/script, using the naming scheme `git-<command-name>`. When
> > more and more functionality was turned into built-in commands (i.e. the
> > `git` executable could run them without spawning a separate process),
> > for backwards-compatibility, we hard-link the `git` executable to
> > `git-<built-in>` for every built-in.
> >
> > This backwards-compatibility was needed to support scripts that called
> > the dashed form, even if we deprecated that a _long_ time ago.
> >
> > For that reason, we just introduced a Makefile knob to skip linking
> > them. To make sure that this keeps working, teach the CI
> > (and PR) builds to skip generating those hard-links.
> >
> > This is actually not such a big change: e4597aae6590 (run test suite
> > without dashed git-commands in PATH, 2009-12-02) made sure that our test
> > suite does not require dashed commands. With this Makefile knob, the
> > commitment is just a little stronger (running tests with `--with-dashes`
> > would _still_ not see the dashed form of the built-ins).
> >
> > There is a subtle change in behavior with this patch, though: as we no
> > longer even _build_ the dashed executables, running the test suite would
> > fail if any of Git's scripted commands (e.g. `git-request-pull`) still
> > This would have succeeded previously (and would have been unintentional,
> > of course) because `bin-wrappers/git` sets `GIT_EXEC_PATH` to the
> > top-level directory (which would still have contained, say,
> > `git-rev-parse`).
> >
> > Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> > ---
> >  ci/run-build-and-tests.sh | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
> > index 6c27b886b8..1df9402c3b 100755
> > --- a/ci/run-build-and-tests.sh
> > +++ b/ci/run-build-and-tests.sh
> > @@ -10,7 +10,7 @@ windows*) cmd //c mklink //j t\\.prove "$(cygpath -aw "$cache_dir/.prove")";;
> >  *) ln -s "$cache_dir/.prove" t/.prove;;
> >  esac
> >
> > -make
> > +make SKIP_DASHED_BUILT_INS=YesPlease
>
> Please make sure that this Makefile knob is set in all jobs building
> and testing Git, or justify in the commit message why it isn't.

>
> >  case "$jobname" in
> >  linux-gcc)
> >  	make test
> > --
> > gitgitgadget
>