precheck: Add documentation in new manpage

Adds git-precheck(1) as the primary documentation for git-precheck.
Like with git-sonar, the previous 'git-precheck --help' text is
incorporated, and specifying --help now causes the new manpage to open.

Signed-off-by: Matt Hunter <m@lfurio.us>

1 files changed, 67 insertions, 0 deletions

diff --git a/git-precheck.1 b/git-precheck.1
new file mode 100644
index 0000000..e0861b2
--- /dev/null
+++ b/git-precheck.1
@@ -0,0 +1,67 @@
+.TH GIT\-PRECHECK 1 git\-sonar
+
+.SH NAME
+git\-precheck \- detect "unready" state of a git repository
+
+.SH SYNOPSIS
+.B git\-precheck
+.RB [ \-\-quiet ]
+.RB [ \-\-ignore\-dirty ]
+.RB [ \-\-ignore\-untracked ]
+
+.SH DESCRIPTION
+If
+.B git\-precheck
+is run inside a git repository, it examines the repo for any in\-progress git
+operations or unclean state and returns an exit code indicating the status.
+Otherwise,
+.B git\-precheck
+reports that it is not in any git worktree.
+.P
+If
+.B \-\-quiet
+is not given, a line of text is printed describing each condition found.
+
+.SH OPTIONS
+.TP
+.B \-\-quiet
+Don't actually print anything.
+.TP
+.B \-\-ignore\-dirty
+Don't consider the presence of uncommitted changes to tracked files as an
+unclean state.
+.TP
+.B \-\-ignore\-untracked
+Don't consider the presence of untracked files as an unclean state.
+
+.SH EXIT STATUS
+.TP
+.B 0
+If inside a repository and all checks return normal
+.TP
+.B 1
+If untracked files are detected
+.TP
+.B 2
+If dirty/modified files are detected
+.TP
+.B 3
+If any ongoing git operation is in progress
+.TP
+.B 4
+If not inside a git repository
+.P
+.B git\-precheck
+will exit with any other value if an error occurs.
+
+.SH SEE ALSO
+.BR git\-sonar (1),
+.BR git\-status (1)
+
+.SH LICENSE
+.B git\-precheck
+is part of the
+.B git\-sonar
+project, made available under the terms of the
+.B MIT
+license.