Matthew Rothenberg <mr...@khanacademy.org> writes:
> - what is the expected PATH modification behavior for subprocesses of
> git-hooks? Is this documented anywhere?
> - what would be causing /usr/local/bin to be prepended here, and can
> it be adjusted via preference?
This is not limited to hooks and very much deliberate, I think. In
order to make sure anything that is called from "git" wrapper gets
picked up from GIT_EXEC_PATH so that the matching version of the git
subprogram is used, "git <cmd>" does this before running "git-<cmd>"
(in git.c):
/*
* We use PATH to find git commands, but we prepend some higher
* precedence paths: the "--exec-path" option, the GIT_EXEC_PATH
* environment, and the $(gitexecdir) from the Makefile at build
* time.
*/
setup_path();
And setup_path() is defined in exec_cmd.c to start the new PATH with
git-exec-path, and then the path to the running "git" itself, and
then finally the external PATH.
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