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6c2bec96a8
Document rules to use GIT_REFLOG_ACTION variable in the scripted Porcelain. git-rebase--interactive locally violates them, but it is a leaf user that does not call out to or dot-source other scripts, so it does not urgently need to be fixed. * jc/reflog-doc: setup_reflog_action: document the rules for using GIT_REFLOG_ACTION
95 lines
2.9 KiB
Text
95 lines
2.9 KiB
Text
git-sh-setup(1)
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===============
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NAME
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----
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git-sh-setup - Common Git shell script setup code
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SYNOPSIS
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--------
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[verse]
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'. "$(git --exec-path)/git-sh-setup"'
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DESCRIPTION
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-----------
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This is not a command the end user would want to run. Ever.
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This documentation is meant for people who are studying the
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Porcelain-ish scripts and/or are writing new ones.
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The 'git sh-setup' scriptlet is designed to be sourced (using
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`.`) by other shell scripts to set up some variables pointing at
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the normal Git directories and a few helper shell functions.
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Before sourcing it, your script should set up a few variables;
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`USAGE` (and `LONG_USAGE`, if any) is used to define message
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given by `usage()` shell function. `SUBDIRECTORY_OK` can be set
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if the script can run from a subdirectory of the working tree
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(some commands do not).
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The scriptlet sets `GIT_DIR` and `GIT_OBJECT_DIRECTORY` shell
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variables, but does *not* export them to the environment.
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FUNCTIONS
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---------
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die::
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exit after emitting the supplied error message to the
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standard error stream.
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usage::
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die with the usage message.
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set_reflog_action::
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Set GIT_REFLOG_ACTION environment to a given string (typically
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the name of the program) unless it is already set. Whenever
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the script runs a `git` command that updates refs, a reflog
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entry is created using the value of this string to leave the
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record of what command updated the ref.
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git_editor::
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runs an editor of user's choice (GIT_EDITOR, core.editor, VISUAL or
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EDITOR) on a given file, but error out if no editor is specified
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and the terminal is dumb.
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is_bare_repository::
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outputs `true` or `false` to the standard output stream
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to indicate if the repository is a bare repository
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(i.e. without an associated working tree).
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cd_to_toplevel::
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runs chdir to the toplevel of the working tree.
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require_work_tree::
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checks if the current directory is within the working tree
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of the repository, and otherwise dies.
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require_work_tree_exists::
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checks if the working tree associated with the repository
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exists, and otherwise dies. Often done before calling
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cd_to_toplevel, which is impossible to do if there is no
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working tree.
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require_clean_work_tree <action> [<hint>]::
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checks that the working tree and index associated with the
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repository have no uncommitted changes to tracked files.
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Otherwise it emits an error message of the form `Cannot
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<action>: <reason>. <hint>`, and dies. Example:
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+
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----------------
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require_clean_work_tree rebase "Please commit or stash them."
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----------------
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get_author_ident_from_commit::
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outputs code for use with eval to set the GIT_AUTHOR_NAME,
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GIT_AUTHOR_EMAIL and GIT_AUTHOR_DATE variables for a given commit.
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create_virtual_base::
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modifies the first file so only lines in common with the
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second file remain. If there is insufficient common material,
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then the first file is left empty. The result is suitable
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as a virtual base input for a 3-way merge.
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GIT
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---
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Part of the linkgit:git[1] suite
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