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22904b5702
The way that auto completion works currently is that user's input is parsed, and then we try to find the first --option (in the parsed structure) that has the same value as user's input around where <TAB> was pressed. For instance, for the following input: virsh # command --arg1 hello --arg2 world<TAB> we will see "world" as text that user is trying to autocomplete (this is affected by rl_basic_word_break_characters which readline uses internally to break user's input into individual words) and find that it is --arg2 that user is trying to autocomplete. So far so good, for this naive approach. But consider the following example: virsh # command --arg1 world --arg2 world<TAB> Here, both arguments have the same value and because we see "world" as text that user is trying to autocomplete we would think that it is --arg1 that user wants to autocomplete. This is obviously wrong. Fortunately, readline stores the current position of cursor (into rl_point) and we can use that when parsing user's input: whenever we reach a position that matches the cursor then we know that that is the place where <TAB> was pressed and hence that is the --option that user wants to autocomplete. Readline stores the cursor position as offset (numbered from 1) from the beginning of user's input. We store this input into @parser->pos initially, but then advance it as we tokenize it. Therefore, what we need is to store the original position too. Thanks to Martin who helped me with this. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> |
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==============================
Libvirt API for virtualization
==============================
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
For some of these hypervisors, it provides a stateful management
daemon which runs on the virtualization host allowing access to the
API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other
languages including Python, Perl, PHP, Go, Java, OCaml, as well as
mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the
website:
https://libvirt.org
License
=======
The libvirt C API is distributed under the terms of GNU Lesser General
Public License, version 2.1 (or later). Some parts of the code that are
not part of the C library may have the more restrictive GNU General
Public License, version 2.0 (or later). See the files ``COPYING.LESSER``
and ``COPYING`` for full license terms & conditions.
Installation
============
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
============
The libvirt project welcomes contributions in many ways. For most components
the best way to contribute is to send patches to the primary development
mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
=======
The libvirt project has two primary mailing lists:
* libvirt-users@redhat.com (**for user discussions**)
* libvir-list@redhat.com (**for development only**)
Further details on contacting the project are available on the website:
https://libvirt.org/contact.html