Hi William,

I've installed your updates, and logged out and in just to be sure.
Here's what I get (continuing comment 35):

The order in which I release the keys still matters.  This makes it
pretty much unusable for me, since the combo I'm used to (rolling my
hand from right to left: press Alt, press Shift, release Alt release
Shift) does not work anymore.  The behavior of key combos is always to
act on keypress, e.g. Ctrl+Space should switch the layout as soon as I
press the space (and update the indicator too), and the order in which I
release should not matter.  Same goes for modifier-only key combos.  The
order in which the modifiers are pressed shouldn't matter either.

As far as I know, the old version relied on XKB groups, i.e. X Window
was configured to execute the keymap change internally, independently of
the desktop environment.  The applet just provided a feedback of X's
internal state, and a method to change that.  I really don't know
anything about the new system, but I seem to get a weird (and
problematic) behavior of these two methods conflicting.  As I've
mentioned, I've upgraded from previous versions so I probably have tons
of leftover of my old preference everywhere (both personal gnome config,
and system-wide X config).  (My old config is: having us and hu layouts,
and Alt+Shift as toggle. Neither the press order, nor the release order
of these two keys mattered previously.)

When I hit Alt+Shift as the new hotkey in Text Entry Settings, I get
"Shift+Alt+Next Group" displayed as the hotkey.  This clearly shows that
the Alt+Shift toggle of XKB groups is still in effect.  If I choose
English in the menu, no shortcut changes layout.  If I choose Hungarian,
the Alt+Shift combo (in any of the 4 ways of pressing/releases) switches
layout without updating the indicator.  Exactly as when I specify a
different shortcut in Gnome which I don't press at all.  This is a clear
indication that an Xkb group change happens, unaware to gnome /
indicator-kbd.

I executed >> setxkbmap us,hu -option '' << from the terminal to clear
the XKB switching shortcut.  Now, if I specify the desired shortcut in
Text Entry, I see "Alt+Shift L" which looks way more promising.  From
this moment, only 1 of the 4 possible press/release orders work: press
Alt, pres Shift, release Shift, release Alt.  (Again: such behavior is
unusable for me.)  When pressing this combo, the layout changes and it's
reflected in the indicator.  It's a clear sign that this event was
handled by Gnome, and not Xkb.  But: when pressing this combo for the
first time, everything gets reverted to the previous behavior.
Alt+Shift is resurrected as an Xkb group switcher (any 4 orders toggle
the layout, but only if the indicator shows Hu, not when on En; and the
modification is not reflected.  Specifying Alt+Shift as the shortcut
again displays "Shift+Alt+Next Group".)  I'm not sure where the old Xkb
setting is resurrected from.

Summary:

- Previously Gnome relied on Xkb groups, something I was familiar with.
(About 8-10 years ago it was finally a great solution, compared to
executing xmodmap all the time.  It was nice to see how X implemented
support, and Gnome/Kde migrated to using this feature.  Everything
worked fine for me, and I could even switch desktop environment / window
managers without having to configure anything.  Now it's all broken
again.)  Now apparently we have some brand new method, I don't know
anything about its technical details.  I'm not sure what was the reason
for such an infrastructure change.

- As most likely users will prefer to keep (or re-specify) the same
switcher, it's very important that the old way of setting it (both
system-wide (if any) and personal gnome config (if any)) is cleaned up
during the upgrade.  This does not happen now.  The old and new methods
of switching layout conflict in terrible ways, let alone the minor
detail that they want to (and of course fail to) grab the same hotkey.
It is still horribly broken.

- The release order of keys really must not matter.

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https://bugs.launchpad.net/bugs/1218322

Title:
  Can't set keyboard layout change to alt+shift, ctrl+shift, etc.

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