it isn't safe to assume that symlinks created in the enabled/* dirs will
be symlinks later...
some users use tools like Dropbox to sync their files across systems,
and these may transform symlinks into regular files. explicitly
checking for symlinks with tests like [ -h $file ] will break on these
systems. these tests have been replaced with [ -e $file ] instead.
loading fasd clobbers z(), and results in a cryptic syntax error
message, since 'z' is already an alias when z.plugin.bash is being
sourced.
this conditional detects this situation and returns early.
add about-plugin metadata
chmod -x plugins
cleanup filenames to standardize on x.plugin.bash format
only plugin files intended to be executable from the command line should
contain a shebang line, and should be a+x.
Erich Smith