orig_source_ext_re = r"orig(?:-.+)?\.tar\.(?:gz|bz2|xz)"
re_orig_source_ext = re.compile(orig_source_ext_re + "$")
-re_source_ext = re.compile("(" + orig_source_ext_re + r"|debian\.tar\.(?:gz|bz2|xz)|diff\.gz|tar\.(?:gz|bz2|xz)|dsc)$")
+re_source_ext = re.compile("(" + orig_source_ext_re + r"|debian\.tar\.(?:gz|bz2|xz)|diff\.gz|tar\.(?:gz|bz2|xz)|dsc|asc)$")
re_issource = re.compile(r"(.+)_(.+?)\." + re_source_ext.pattern)
re_single_line_field = re.compile(r"^(\S*?)\s*:\s*(.*)")