doc = meta.get("doc", "").strip()
        if ver < 3:
            doc = re.sub("(?<=\S) *\n(?! *\n)", " ", doc)
        return doc

    # Put config widgets into channels/features configwin notebooks
    def add_channels(self, id=None, w=None, label=None, color=None, image=None, align=20):
        self.plugin_options.pack_start(uikit.wrap(self.widgets, id, w, label, color, image, align))
        self.plugin_options.pack_start(uikit.wrap(self.widgets, id, w, label, color, image, align, label_markup=1))

    # Separate tab for non-channel plugins
    def add_features(self, id=None, w=None, label=None, color=None, image=None, align=20):
        self.feature_options.pack_start(uikit.wrap(self.widgets, id, w, label, color, image, align))
        self.feature_options.pack_start(uikit.wrap(self.widgets, id, w, label, color, image, align, label_markup=1))


    # save config
    def save(self, widget):
        self.save_config(conf.__dict__, "config_")
        self.save_config(conf.plugins, "config_plugins_")
        [callback() for callback in self.hooks["config_save"]]
        conf.save(nice=1)
        self.hide()

#   { name=option2, type=boolean, $value=1, etc. }
#
# Stubs out name, value, type, description if absent.
#
def plugin_meta_config(str):
    config = []
    for entry in rx.config.findall(str):
        entry = entry[0] or entry[1]
        opt = {
            "type": None,
            "name": None,
            "description": "",
            "value": None
        }
        for field in rx.options.findall(entry):

class rx:
    comment = re.compile(r"""(^ {0,4}#.*\n)+""", re.M)
    hash = re.compile(r"""(^ {0,4}# *)""", re.M)
    keyval = re.compile(r"""
        ^([\w-]+):(.*$(?:\n(?![\w-]+:).+$)*)      # plain key:value lines
    """, re.M | re.X)
    config = re.compile(r"""
        [\{\<] (.+?) [\}\>]                    # JSOL/YAML scheme {...} dicts
        \{ (.+?) \} | \< (.+?) \>              # JSOL/YAML scheme {...} dicts
    """, re.X)
    options = re.compile(r"""
        ["':$]?   (\w*)  ["']?                 # key or ":key" or '$key'
        \s* [:=] \s*                           # "=" or ":"
     (?:  "  ([^"]*)  "
       |  '  ([^']*)  '                        #  "quoted" or 'singl' values
       |     ([^,]*)                           #  or unquoted literals