.Dd September  8, 2021
.Dt GIT-COMMENT 1
.Os
.
.Sh NAME
.Nm git-comment
.Nd add comments from commit messages
.
.Sh SYNOPSIS
.Nm git comment
.Op Fl \-all
.Op Fl \-comment-start Ar string
.Op Fl \-comment-lead Ar string
.Op Fl \-comment-end Ar string
.Op Fl \-min-group Ar lines
.Op Fl \-min-repeat Ar lines
.Op Fl \-no-repeat
.Op Ar options ...
.Op Fl \-
.Ar file
.
.Sh DESCRIPTION
Annotates the given file with comments
containing the commit messages
of the revisions
which last modified
each group of lines.
.
.Pp
.Nm
accepts all the options of
.Xr git-blame 1
in addition to the following:
.Bl -tag -width Ds
.It Fl \-all
Include all commit messages.
The default is to include
only commit messages with bodies
(lines after the summary).
.
.It Fl \-comment-start Ar string
Start comments with
.Ar string .
The default is the value of
.Cm comment.start
or
.Ql /* .
.
.It Fl \-comment-lead Ar string
Continue comments with the leading
.Ar string .
The default is the value of
.Cm comment.lead
or
.Ql " *" .
.
.It Fl \-comment-end Ar string
End comments with
.Ar string .
The default is the value of
.Cm comment.end
or
.Ql " */" .
.
.It Fl \-min-group Ar lines
Add comments only for groups of at least
.Ar lines .
The default is 2 lines.
.
.It Fl \-min-repeat Ar lines
Avoid repeating a comment
if it occurred in the last
.Ar lines .
The default is 20 lines.
.
.It Fl \-no-repeat
Avoid repeating comments entirely.
.El
.
.Sh EXAMPLES
For files with
.Ql #
comments:
.Bd -literal -offset indent
git config comment.start '#'
git config comment.lead '#'
git config comment.end ''
.Ed