git-sh-setup man page on Darwin

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GIT-SH-SETUP(1)			  Git Manual		       GIT-SH-SETUP(1)

NAME
       git-sh-setup - Common Git shell script setup code

SYNOPSIS
       . "$(git --exec-path)/git-sh-setup"

DESCRIPTION
       This is not a command the end user would want to run. Ever. This
       documentation is meant for people who are studying the Porcelain-ish
       scripts and/or are writing new ones.

       The git sh-setup scriptlet is designed to be sourced (using .) by other
       shell scripts to set up some variables pointing at the normal Git
       directories and a few helper shell functions.

       Before sourcing it, your script should set up a few variables; USAGE
       (and LONG_USAGE, if any) is used to define message given by usage()
       shell function. SUBDIRECTORY_OK can be set if the script can run from a
       subdirectory of the working tree (some commands do not).

       The scriptlet sets GIT_DIR and GIT_OBJECT_DIRECTORY shell variables,
       but does not export them to the environment.

FUNCTIONS
       die
	   exit after emitting the supplied error message to the standard
	   error stream.

       usage
	   die with the usage message.

       set_reflog_action
	   Set GIT_REFLOG_ACTION environment to a given string (typically the
	   name of the program) unless it is already set. Whenever the script
	   runs a git command that updates refs, a reflog entry is created
	   using the value of this string to leave the record of what command
	   updated the ref.

       git_editor
	   runs an editor of user’s choice (GIT_EDITOR, core.editor, VISUAL or
	   EDITOR) on a given file, but error out if no editor is specified
	   and the terminal is dumb.

       is_bare_repository
	   outputs true or false to the standard output stream to indicate if
	   the repository is a bare repository (i.e. without an associated
	   working tree).

       cd_to_toplevel
	   runs chdir to the toplevel of the working tree.

       require_work_tree
	   checks if the current directory is within the working tree of the
	   repository, and otherwise dies.

       require_work_tree_exists
	   checks if the working tree associated with the repository exists,
	   and otherwise dies. Often done before calling cd_to_toplevel, which
	   is impossible to do if there is no working tree.

       require_clean_work_tree <action> [<hint>]
	   checks that the working tree and index associated with the
	   repository have no uncommitted changes to tracked files. Otherwise
	   it emits an error message of the form Cannot <action>: <reason>.
	   <hint>, and dies. Example:

	       require_clean_work_tree rebase "Please commit or stash them."

       get_author_ident_from_commit
	   outputs code for use with eval to set the GIT_AUTHOR_NAME,
	   GIT_AUTHOR_EMAIL and GIT_AUTHOR_DATE variables for a given commit.

       create_virtual_base
	   modifies the first file so only lines in common with the second
	   file remain. If there is insufficient common material, then the
	   first file is left empty. The result is suitable as a virtual base
	   input for a 3-way merge.

GIT
       Part of the git(1) suite

Git 1.8.5			  11/27/2013		       GIT-SH-SETUP(1)
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