Rather than adding %U (which according to the spec means "a list of
URLs"), it would be better to use "%f" ("A single file name") since
according to the manpage Gargoyle can only load one file at a time, and
does not support URLs.
Rather than adding %U (which according to the spec means "a list of
URLs"), it would be better to use "%f" ("A single file name") since
according to the manpage Gargoyle can only load one file at a time, and
does not support URLs.