our $versiontag_re = qr{[-+.\%_0-9a-zA-Z/]+};
our $branchprefix = 'dgit';
our $series_filename_re = qr{(?:^|\.)series(?!\n)$}s;
-our $extra_orig_namepart_re = qr{[-0-9a-z]+};
+our $extra_orig_namepart_re = qr{[-0-9a-zA-Z]+};
our $orig_f_comp_re = qr{orig(?:-$extra_orig_namepart_re)?};
our $orig_f_sig_re = '\\.(?:asc|gpg|pgp)';
our $orig_f_tail_re = "$orig_f_comp_re\\.tar(?:\\.\\w+)?(?:$orig_f_sig_re)?";
sub changedir_git_toplevel () {
my $toplevel = cmdoutput qw(git rev-parse --show-toplevel);
+ length $toplevel or fail __ <<END;
+not in a git working tree?
+(git rev-parse --show-toplevel produced no output)
+END
chdir $toplevel or fail f_ "chdir toplevel %s: %s\n", $toplevel, $!;
}