+ # Handle Emacs gitmerge.el "skipped" commits.
+ # Yes, this should be controlled by an option. So sue me.
+ if ( grep /^(; )?Merge from /, @line )
+ {
+ my $found = 0;
+ foreach (@line)
+ {
+ if (grep /^The following commit.*skipped:$/, $_)
+ {
+ $found = 1;
+ ## Reset at each merge to reduce chance of false matches.
+ @skipshas = ();
+ next;
+ }
+ if ($found && $_ =~ /^([0-9a-fA-F]{7,}) [^ ]/)
+ {
+ push ( @skipshas, $1 );
+ }
+ }
+ }
+
+ # Ignore commits that match the --ignore-matching pattern, if specified.
+ if (! ($skipflag || (defined $ignore_matching
+ && @line && $line[0] =~ /$ignore_matching/)))
+ {
+ if (defined $ignore_line && @line)
+ {
+ @line = grep ! /$ignore_line/, @line;
+ while ($line[$#line] =~ /^\s*$/) { pop @line; }
+ }
+
+ # Record whether there are two or more paragraphs.
+ my $multi_paragraph = grep /^\s*$/, @line;
+
+ # Format 'Co-authored-by: A U Thor <email@example.com>' lines in
+ # standard multi-author ChangeLog format.
+ for (@coauthors)
+ {
+ s/^Co-authored-by:\s*/\t /;
+ s/\s*</ </;
+
+ /<.*?@.*\..*>/
+ or warn "$ME: warning: missing email address for "
+ . substr ($_, 5) . "\n";
+ }
+
+ # If clustering of commit messages has been disabled, if this header
+ # would be different from the previous date/name/etc. header,
+ # or if this or the previous entry consists of two or more paragraphs,
+ # then print the header.
+ if ( ! $cluster
+ || $date_line ne $prev_date_line
+ || "@coauthors" ne "@prev_coauthors"
+ || $multi_paragraph
+ || $prev_multi_paragraph)
+ {
+ $prev_date_line eq ''
+ or print "\n";
+ print $date_line;
+ @coauthors
+ and print join ("\n", @coauthors), "\n";
+ }
+ $prev_date_line = $date_line;
+ @prev_coauthors = @coauthors;
+ $prev_multi_paragraph = $multi_paragraph;
+
+ # If there were any lines
+ if (@line == 0)
+ {
+ warn "$ME: warning: empty commit message:\n $date_line\n";
+ }
+ else
+ {
+ if ($append_dot)
+ {
+ # If the first line of the message has enough room, then
+ if (length $line[0] < 72)
+ {
+ # append a dot if there is no other punctuation or blank
+ # at the end.
+ $line[0] =~ /[[:punct:]\s]$/
+ or $line[0] .= '.';
+ }
+ }
+
+ # Remove one additional leading TAB from each line.
+ $strip_tab
+ and map { s/^\t// } @line;
+
+ # Prefix each non-empty line with a TAB.
+ @line = map { length $_ ? "\t$_" : '' } @line;
+
+ print "\n", join ("\n", @line), "\n";
+ }