function handler decorator
Weird bug on load <resource> exectution leading to new graph instances with rdflib.RDFUriRef identifiers.
causing problems with seemingly double keys in rdf._graphs directory: rdflib.Graph.identifier is of type URIRef.
working on disk content autocompletion
found a way to stay in autocompletion of current term when expected values are filenames and prefix indicates subdirectories.
autocompletion now with regard of cursor position; new commands for listing available commands.
some small modifications, making things better
new module commands.stdcmd binds command handler functions in commands.handlers namespace to command syntaxes.
Merge branch 'master' into debug
cleaning up
Fixed autocompletion bug in commands.choices_left; empty string were breaking completion list assemblage.
moved load namespaces command binding to new module stdcmd.py. Namespaces need to be handled differently: every namespace bound by rdf data read into graphs has to be present in rdf.namespaces module, because we will need their prefixes for input value autocompletion and validation. If running machine is offline, namespaces must be registered nonetheless.
extended documentation.
Extract terms from rdf data and populate namespace instances with them.
Plenty of improvements, mostly concerning namespaces.
color output still causes trouble.
We want to reliably have giant ugly URLs replaced by their  counterpart. Not much of a problem for remote or at least http:// locators, but for file:/// resources. We should implement some functions in the rdf module that determine congruency of URLs and absolute file paths pointing to the same rsources, and translate one into the other whenever necessary, like during autocompletion list generations, or simply better output for the shell modules.