if add_default and cmd.find("%") < 0:
        cmd = cmd + " %pls"
        # "pls" as default requires no conversion for most channels, and seems broadly supported by players

    # Playlist type placeholders (%pls, %m3u, %xspf, etc.)
    for dest, rx in placeholder_map.items():
        rx = "(?<!%%)%s\\b" % rx
#        rx = '(?!"\a"|"\n")%s\\b' % rx
        if re.search(rx, cmd, re.X):
            # no conversion
            if conf.playlist_asis:
                url = row["url"]
            # e.g. from .m3u to .pls
            else:
                url = convert_playlist(row["url"], listfmt(source), listfmt(dest), local_file=True, row=row)
            # insert quoted URL/filepath
            return re.sub(rx, quote(url), cmd.replace("%%", "%"), 2, re.X)
                

    if not add_default:
        return cmd
    else:
         return "/bin/false"


# Substitute streaming address with desired playlist format
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Converts input rows/urls, probes for playlist format, fetches them
# and possibly converts remote .pls to local .m3u/.xpsf filename or
# just returns direct "srv" urls.