[PATCH 00/18] Make bash completion great again

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Technically, this is a v2 of [1], but this implements the feature from
different angle and therefore it's a start of new series.


What's implemented?
===================
Auto completion for both interactive and non-interactive
virsh/virt-admin.


Known limitations
=================
Currently, just options completers work. I mean, to bring up list
of domains you have to:

  virsh # start --domain <TAB><TAB>

Doing bare:

  virsh # start <TAB><TAB>

brings up list of --options. With the new approach implemented
here it should be easy to implement this. But that can be saved
for later.


How to test this?
=================

Interactive completion should work out of the box. Just make sure
you're connected. Completers don't connect! You certainly don't
want ssh's 'Password:' prompt show on <TAB><TAB>, do you?
Non-interactive completers do connect, but in order to avoid any
password prompts, /dev/stdin is closed before anything else is
done. In order to test it, just:

  libvirt.git $ source tools/bash-completion/vsh

Now, bash completion should work:

  libvirt.git $ ./tools/virsh -c qemu:///system start --domain <TAB><TAB>


Notes
=====

As usual, you can find all the patches on my github [2]. I've
tried to work in all the review suggestions from v1. Due to
changes in design (reusing parse code instead of duplicating it)
not all suggestions were possible to work in though.

Michal

1: https://www.redhat.com/archives/libvir-list/2017-November/msg00213.html
2: https://github.com/zippy2/libvirt/tree/bash_autocomplete_v3  (yeah v3, don't ask)

Michal Privoznik (18):
  vsh: Drop useless check for opts != NULL
  vsh: Drop useless check for cmd != NULL
  vshCommandParse: Don't leak @tkdata
  vshCommandStringParse: Allow retrieving partial result
  vshReadlineParse: Drop code duplication
  vshReadlineParse: Escape returned results if needed
  vshReadlineParse: Use string list
  vshCommandOpt: Allow caller avoiding assert()
  util: Introduce virStringListMerge
  vsh: Fix vshCompleter signature
  vsh: Call vshCmdOptDef completer
  vsh: Prune string list returned by completer
  vsh: Filter --options
  vsh: Introduce complete command
  tools: Provide bash autompletion file
  virsh: Introduce virshDomainNameCompleter
  virsh: Introduce virshDomainInterfaceCompleter
  virt-admin: Introduce vshAdmServerCompleter

 configure.ac                 |   3 +
 libvirt.spec.in              |   3 +
 m4/virt-bash-completion.m4   |  74 +++++
 src/libvirt_private.syms     |   1 +
 src/util/virstring.c         |  36 +++
 src/util/virstring.h         |   3 +
 tools/Makefile.am            |  40 ++-
 tools/bash-completion/vsh    |  67 +++++
 tools/virsh-completer.c      | 150 ++++++++++
 tools/virsh-completer.h      |  41 +++
 tools/virsh-domain-monitor.c |  33 ++-
 tools/virsh-domain.c         | 186 ++++++------
 tools/virsh-snapshot.c       |  24 +-
 tools/virsh.c                |   5 +-
 tools/virsh.h                |   7 +-
 tools/virt-admin-completer.c |  76 +++++
 tools/virt-admin-completer.h |  33 +++
 tools/virt-admin.c           |  13 +-
 tools/vsh.c                  | 663 ++++++++++++++++++++++++++-----------------
 tools/vsh.h                  |  23 +-
 20 files changed, 1097 insertions(+), 384 deletions(-)
 create mode 100644 m4/virt-bash-completion.m4
 create mode 100644 tools/bash-completion/vsh
 create mode 100644 tools/virsh-completer.c
 create mode 100644 tools/virsh-completer.h
 create mode 100644 tools/virt-admin-completer.c
 create mode 100644 tools/virt-admin-completer.h

-- 
2.13.6

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