Just re-arranging on every focus change would cause useless/needless
re-arranges (which have no effect except to waste CPU time). Thus, this
adds a special (undocumented) flag on layouts that makes sure that a
rearrange occurs when the focus changes.
Fixes: https://github.com/awesomeWM/awesome/issues/1799
Signed-off-by: Uli Schlachter <psychon@znc.in>
This implementes the FIXME added a few commits ago. A new
request::geometry handler turns client requests into normal
lua `c.maximized = true` property changes.
A relatively common problem with awesome is with mixing sticky clients
and the focus history. Once a sticky client ever had the focus, it will
always get the focus after a tag switch. This is because the focus
history is global and the sticky client is always the most recently
focused and currently visible client in the list.
Work around this by discriminating sticky clients: First try to find a
client to focus, but ignore sticky clients. When this does not find
anything, try again, but this time also consider sticky clients.
(Basically the same issue exists with clients that are on multiple tags,
but I guess that one can be ignored.)
Fixes: https://github.com/awesomeWM/awesome/issues/733
Signed-off-by: Uli Schlachter <psychon@znc.in>
Once upon a time, 4b9584fdb1 already fixed this problem: We have to
set the border width to zero before applying the new geometry to the
client, because changing the border width makes the client move
according to its gravity.
Then came e54387904b and made this code use awful.placement instead
of just fullscreening the client itself (without explaining why in the
commit message!). After this commit, the border width was just ignored
and left as-is. This was then fixed in 0bf8bb6a64 (no idea which
callback the commit message refers to, the old code was basically just
c.border_width=0, c:geometry(screen_geo)). However, now the border width
was again changed after the geometry and the bug that was fixed by
4b9584fdb1 was back.
This commit fixes this regression again by making sure that the border
width is set to zero before the geometry is set. This becomes slightly
more complicated, because now it is also awful.placement's job to
restore the old border width.
This is why this commit adds a new option to awful.placement so that it
sets the border width to zero after creating its memento of the old
border width.
Fixes: https://github.com/awesomeWM/awesome/issues/1607
Signed-off-by: Uli Schlachter <psychon@znc.in>
Change indexing so that a keyboard map with a single group still gets
displayed in awful's keyboardlayout widget.
Signed-off-by: Quentin Minster <quentin@minster.io>
There are some cases where a client's floating state "silently" changes.
For example, a fullscreen client will be considered floating. However,
even though c.floating changes its value in this case, we did not emit
the property::floating signal.
Fix this by explicitly tracking the "implicitly floating" state. When
some property that influences this "implicitly floating" state changes,
we update it and if a client which was not explicitly assigned a
floating state observes a change in this value, property::floating is
emitted.
This was tested by running a terminal and two xeyes in a tag with a
tiling layout where awful.ewmh was patched so that clients do not change
their geometry when fullscreening or maximizing. It was observable that
after this patch e.g. the titlebar and the tasklist update to show the
floating state of the client which became implicitly floating due to
being maximized.
Fixes: https://github.com/awesomeWM/awesome/issues/1662
Signed-off-by: Uli Schlachter <psychon@znc.in>
The longer name is a bit more self-explanatory. The plural is meant to
indicate that this recursively creates missing parent directories and
does not just try to create the single given target directory.
Since filesystem.mkdir() is part of the v4.1 release, a deprecation stub
is needed.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The changes should not actually make a difference. If creating the
directory fails, the error will now be different, but that should be
about it.
Signed-off-by: Uli Schlachter <psychon@znc.in>
I didn't actually test this, but at least this now looks like valid Lua
code to me, so this is definitely an improvement.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Swap the parameters the next time the API break / deprecation season is open.
This is indeed confusing, as reported on IRC. The screen is *not* optional,
`awful.tag.find_by_name(name)` wont work
This was broken in 9cb60b8 in PR #1597 (from myself).
focus() is not defined on the screen instance as method
but on the screen module as function.
Signed-off-by: Christoph Mertz <chris@nimel.de>
Fix#1644
* Move table functions out of awful.util into new gears.table
* travis: Use v9999 prefix for full requests
Make sure no newly deprecated functions are used
* Move all `awful.util.table.*` calls to `gears.table.*` calls
Move table test functions from awful/util_spec to new gears/table_spec
Change awful.util.subsets call to gears.math.subsets in awful/key.lua
This adds a new widget that displays the icon of a client. This widget
tries to use the best fitting of the available icons.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This extracts the code for finding the next screen
from focus_bydirection to a separate method on
the screen object.
The main reason was to use the finding code without
actually changing the screen focus but this should
incidentally make the code slightly easier to test
as well since both concerns can be tested in
isolation.
Signed-off-by: Christoph Mertz <chris@nimel.de>
Every client button type (e.g. minimize, maximize_inactive, maximize_active, close) has the option to show a different icon when the mouse hovers over it or a "button::press" signal is sent.
Signed-off-by: Lego Stax legostax@gmail.com
* wibar: Add beautiful variables
This was done a few weeks ago for the notifications. This was
requested on IRC a while ago to have different font for the wibars.
Now that shapes are supported, it also makes more sense for the
border.
style.disable_task_name and beautiful.tasklist_disable_task_name. Suppresses display of a given client's name, but preserves the setting of tasklist_plain_task_name
Fixes
> W: awful: function margin is deprecated, see wibox.layout.margin has been renamed to wibox.container.margin.
to
> W: wibox.layout.margin has been renamed to wibox.container.margin.
* refactor(awful: hotkeys_popup): expose configuration options for a widget instance and use more object-oriented structure for the widget
closes#1352closes#1497
* doc(awful: hotkeys_popup): add @beautiful docstrings
* fix(awful: hotkeys_popup): add label_bg for misc labels; improve @beautiful docstrings
This was previously done in a callback, but wasn't really
clean and/or bug free. Borders could end up leaking on other
screens as proven by an integration test.
Fix#171
And stop listening to property::geometry, it's no longer needed.
This also remove messing up the border without saving it
somewhere. The concept is sound, but not the implementation.
Before this commit, do this:
c.maximize_hoizontal = true
c.maximize = true
c.maximize = false
assert(c.maximize_hoizontal)
Would not work because the states were not preserved individually.
This commit fixes that. Awesome wont be confused about it's own
state anymore.
This may seem pointless, but when it come to undoing these
maximizations, it was ambiguous.
Before 4.0, maximizing could only be done in 2 operations.
4.0 add an unified way, but kept doing 2 operations. The old
Lua EWMH code to serialize the 2 operations was dropped when
the codepath was simplified and replaced by a generic version
in awful.placement. However this version never implemented
combining multiple mementos into 1.
This commit unify the maximize C code, drop the ugly macro
template and actually fixes a couple more issues that were
caused because request::geometry was sent twice.
There is already a way to prevent them from moving them, but the
next few commits will remove it. There is no reasons to handle
this differently from fullscreen clients.
The functions awful.client.shape.update.bounding and .clip handle both
the client's shape and the shape set by Lua. However,
awful.client.shape.update.all only handles the shape set by Lua and
ignores the client's own shape. This can easily be noticed with xeyes.
When update.all ran last and you move around xeyes, the wallpaper behind
it is moved along, because it is not actually outside of the window.
Fix this by partly reverting 1a5f6b7ad2 and having update.all just
call the other two functions again.
Signed-off-by: Uli Schlachter <psychon@znc.in>
In theory it would be enough to only update the old and new screen of
the tag whose screen changed. However, we cannot easily get the old
screen, so just update all layoutboxes.
Fixes: https://github.com/awesomeWM/awesome/issues/1503
Signed-off-by: Uli Schlachter <psychon@znc.in>
This removes some @EXPANSIONS@ from Lua files and removes a hack that
was needed. All is better now! :-)
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit doesn't add any useful documentation, but adds
previously hidden documentation variables. It can be the basis
of a better layout documentation.
Fix#1246
The function that is documented as awful.wibox.stretch is deprecated,
because it was removed (that's not a deprecation, is it?!?). For the
replacement, we used "@see stretch". However, LDoc was randomly
resolving this reference to awful.wibar.stretch (good) or
awful.wibox.stretch (bad; the see points to the element where it
appears).
Fix this by spelling out the "full name" of the function in the @see.
Related-to: https://github.com/awesomeWM/awesome/issues/834
Signed-off-by: Uli Schlachter <psychon@znc.in>
The only other swap function is awful.tag.swap and that one is
deprecated. Thus, it should not be linked to.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Spawn callbacks were never invoked when no startup-notification-rules were
given. This commit fixes the code so that "startup done" callbacks are also
called when no rules were given.
Fixes: https://github.com/awesomeWM/awesome/issues/1218
Signed-off-by: Uli Schlachter <psychon@znc.in>
The usual "a or b"-trick to simulate C's ?:-operator does not work when
"false" is a valid value. Fix the code to handle this correctly and add
a short unit test which would have caught this problem.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of doing Linux-specific magic with error codes and trying to
read the first byte of a file, just use Gio to check if a file exists
and is readable.
Signed-off-by: Uli Schlachter <psychon@znc.in>
When adding callbacks as a `callback` entry in a property, the callback
is run by `awful.rules`, because it does `c.callback =
result_of_function`. This is obviously not intended. Also, this causes
the callbacks to run twice, because the code already handled this
`callback` property specially.
Fix this by just not merging callbacks with the normal rules at all.
Fixes: https://github.com/awesomeWM/awesome/issues/1159
Signed-off-by: Uli Schlachter <psychon@znc.in>
It does not provide much value. The version number is already known to
ldoc globally in the "description" variable.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of using magic with a weak table, the code now saves this data
as a property under the tag object. This avoids all kinds of leaks, for
example caused by t.foo = t.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of using magic with a weak table, the code now saves this cache
as a property under the tag object.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of using a weak table to save the last mouse position, this is
now saved directly as a property under the screen.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of using a weak table with some magic to save properties of a
client, the code now uses the c.data table provided by the C code
instead.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of having an extra weak table to save a boolean per client, this
now sets a property directly on the client.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This new function is called whenever the visibility of the drawable
changes. Later commits can use this for explicitly tracking the lifetime
of drawables instead of using magic weak tables.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This is the first step in deprecating them. A function with so
many optional arguments is just bad design.
The next few commits will rewrite the documentation and deprecate
the old arguments.
For a while, it was often suggested on IRC to replace the default
request::activate handler to implement custom focus stealing policies.
While it is working, it isn't user friendly. This commit add a simple
mechanism to add such policies.
This adds a tparam alias "@screen" for "@tparam screen" (when used to
document e.g. arguments for callbacks), and "@screen_or_idx" when a
function accepts a "screen" or "number".
The default config had tables like mywibox and mywibox[s] was the wibox
that is visible on screen s. When a screen is removed, nothing cleans up
these tables and so the screen and the wibox could not be garbage
collected. The same applies to the layoutbox, taglist etc.
This commit removes the global mywibox table and instead saves it as a
property on the screen. This way, the screen is not explicitly
referenced and when it is removed, the screen, its wibox and all of its
widgets become unreachable and can be garbage collected.
This commit also updates the docs and the tests that referenced things
(mostly the wibox) via mywibox[s] to now use s.mywibox.
Fixes: https://github.com/awesomeWM/awesome/issues/1125
Signed-off-by: Uli Schlachter <psychon@znc.in>
The magnifier layout wants to ignore floating clients. Before 82342f0 this was
done by calling awful.client.floating.get(focus). If "focus" was nil, this might
have checked the floating status of a wrong client (if some other client was
focused, and the code in magnifier set focus=nil before). This issue can easily
be missed and might exist since forever. After 82342f, floating status is
checked via "focus.floating" and this now causes an "attempt to index nil value"
error instead. Much easier to notice.
Fix this by adding the missing nil check and while touching the code, merge this
with the previous "if" and correct another error (the wrong thing happened if we
had #cls=0).
Fixes: https://github.com/awesomeWM/awesome/issues/1103
Signed-off-by: Uli Schlachter <psychon@znc.in>
A client is supposed to go to a screen when:
* It has been started using `awful.spawn` with explicit instructions [1]
* An `awful.rules` rule **or any of its callbacks** set the screen [2]
* When something handle `request::screen` and/or `request::tag` in some
custom ways. [3]
* Some clients can request a screen and mean it (like MythTV/Kodi/XBMC and
some multi-window DAW) [4]
A client is supposed to go to the focused screen when none of the above are
true [5].
Other constraints:
* The screen need to be set only once, anything will will emit
`property::screen` many time and cause side effects.
* There has to be a single entry point to the algorithm, no multiple
"manage" handler.
* Awesome internals must use the `request::` signal API and not force
their decision outside of request handlers.
* Restarting Awesome must not change the client screen
Commit 2178744 fix use case number [1] and [2]. It actually fix [4] too, but
it is an accident and I am not sure we care about [4] anyway. Use case [1]
and [2], however, are very important.
Fix#1091
The geometry storage has been moved into awful.placement. This
code was never executed as data[] was never populated.
There is some behavior that is indeed lost, but it is unlikely
someone will ever notice (it has been broken for 6 months).
The previous code attempted to handle scrren changes while
maximized. The new code organization shift this responsability
to awful.placement. However, it doesn't yet fully implement the
previous logic.
Awesome 3.5.9 accepts `_active`/`_inactive` names for `beautiful`
minimize keys (such as "titlebar_minimize_button_focus_inactive").
Some themes rely on those, meaning that when they loaded under
the current Git, the minimize button went missing. This adds a
fallback, to improve compatibility with the existing themes.
This commit remove the `awful.tag` "manage" hook. The relevant
code has been moved to ewmh.lua request::tag handler. The handler
is called either by a volontary screen change or by a forced one.
It also require the awful.rules to be executed. This is done by
default and the user would have to explicitly disable that
behavior. From now on, disabling the rules require the user to
handle tag selection.
Fixes#1028#1052
There was still a problem that caused the "old" tags to be
inserted in the wrong position when "saved" from a screen being
removed.
Also, this use a :get_tags(true) to save an uneeded sorting pass.
The index was updated on an unordered table. As the elements
order did not match the relative indices once they have been
changed, further calls to set_index produced garbage.
The default taglist didn't notice because it use screen.tags
table index instead of the tag index. A debug using
echo 'for _,t in ipairs(mouse.screen.tags) do
print("INDEX:", _, t.index, t.name) end' | awesome-client
Would have shown two or more elements with the same index. To
debug issues related to tag indices, this bash script can be
enabled:
while true; do
echo 'for _,t in ipairs(mouse.screen.tags) do
assert( _==t.index) end' | awesome-client
sleep 0.5
done
This commit add the last placement function imported from the
Radical module.
It allows to place a wibox/client next to another object. It tries
to find the best fit. It also support wibox widgets.
This is intended for tooltips and menus, but can also be used in
`awful.rules` to place the new client as close as possible to the
focused one without overlap.
This reverts commit facf676b13.
Using capi.client.focus.screen to decide which screen is focused breaks
a multiscreen setup. At least makes it extremely annoying to use.
In particular, if you have a focused client on screen 1, move the mouse
to screen 2 and launch a new client, the new client appears in screen 1,
since screen.focused reports that current focused screen is 1, not 2
because of the focused client.
Close#1035Fix#1029
The deprecation wrapper that we still have for this function didn't return
anything. However, awful.util.pread() used to return strings. This breaks
script.
Work around this by returning an empty string. That way code will still break,
but at least it should not error out.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The default config creates the same set of tags for all screens ("1" to "9"). An
awful.rules-rule with e.g. screen = 2, tag = "3" should obviously tag matching
clients with tag "3" of the second screen.
However, the implementation used the first matching tag in the list of all tags
and thus the client ended up tagged with tag "3" from screen 1. Fix this by
calling find_by_name() with the screen that the client is assigned to.
The existing implementation of awful.rules guarantees that any
"screen"-properties are applied before the code touched by this commit is run,
thus this should always work.
This commit does not add a test catching this because we are currently quite bad
at testing multi-screen scenarios and I don't want to invent the necessary
machinery right now.
Fixes: https://github.com/awesomeWM/awesome/issues/988
Signed-off-by: Uli Schlachter <psychon@znc.in>
Commit 0318c6132840413b1f added an image for the minimize button which was
missing before. However, only the default theme and xresources where fixed to
contain the path to the image.
This commit adds the path to all themes.
Also, minimized clients aren't visible, just as closed (=killed) clients aren't
visible. Thus, we don't need an "active" version of this image.
This commit makes us handle the image for the minimize button just like we
handle the close button: There is no difference between "active" and "inactive"
and the file path in the theme doesn't get any path suffix.
Fixes: https://github.com/awesomeWM/awesome/issues/387
Signed-off-by: Uli Schlachter <psychon@znc.in>
If:
1) An app is open in a tag
2) A new tag is created
3) The app is closed in the first tag
4) The first tag is deleted
5) The new tag is deleted
Then this history would try to restore an inactive tag without
a screen. Bad things will then happen.
Reported on IRC. I am not sure why swap() is not enough, but the
old code removed before the mouse refactor did this, so apparently
it is necessary.
The fix has been reported to work by spyroboy on IRC, thanks!
First some reminder on how client geometries works (in X11, awesome just copied
that!):
- The position (x,y) defines where the border of the client begins
- This means that the content starts at (x+border_width,y+border_width)
- However, the size is the size of the client without border
- Thus, the client covers the rectangle from (x,y) to (x+2*bw,y+2*bw)
The client snapping code got this wrong. It only deals with rectangles and thus
for things to work as expected, the width/height have to be increased by two
times the border width. When snapping a client against other visible clients,
the geometry of the client to snap against wasn't calculated correctly.
This was apparently noticed at one point and worked around by decreasing the
position by two times the border width. While this is terribly wrong, it
actually makes things work correctly when snapping to the right or bottom edge
of a client, but breaks for the other edges.
Fix this by just calculating things correctly.
This is based on a patch from jk411.
Fixes: https://github.com/awesomeWM/awesome/issues/928
Signed-off-by: Uli Schlachter <psychon@znc.in>
The requirement to call add_signal() was added to catch typos. However, this
requirement became increasingly annoying with property::<name> signals and e.g.
gears.object allowing arbitrary properties to be changed.
All of this ended up in a single commit because tests/examples fails if I first
let add_signal() emit a deprecation warning.
Signed-off-by: Uli Schlachter <psychon@znc.in>
There was already a bug, as self.active_child.visible
was used instead of self.active_child.wibox.visible
This caused some confusion that this attribute was a widget.
It wasn't.
The behavior was changed during the rewrite. This was a mistake
as it was assumed (wrongly) that nobody used this function with
wiboxes other than "wibars" (awful.wibox).
Fixes#917
Since the screen removal patchset, the tags properties were
cleaned too early. This caused code connecting to "property::activated"
to be called with the tag already partially deleted. For code depending
on those properties, such as radical.impl.taglist, this caused errors.
Apparently, there is such thing as not leaking enough...
Also try to clear the widgets from mywibox. This seem to help.
Time will tell.
Fixes#914, unfixes #808
Why:
* Two different (but related) concepts had the same name
* Users were confused for years on IRC
* The wibar name was already in use in some doc to avoid confusion
This was only partially implemented. The margins were substracted from
the area too early in the pipeline. Now, they are added when getting
the size and substracted when setting it. This way, the margins will
"survive" when a placement function set an absolute value in one of
the field. Previously, this caused one (or more) of the margins to
be lost.
The problem was that get_square_distance() made the screen one pixel larger to
the bottom/right than it really was. Thus, the (x+0,y+0)-pixel of a screen that
was below or to the right of some other screen had distance zero to both of
these screens.
This commit fixes the screen size computation and adds a small unit test for
getbycoord() and get_square_distance().
Reported by Elv13 here:
https://github.com/awesomeWM/awesome/pull/878#issuecomment-219272864
Signed-off-by: Uli Schlachter <psychon@znc.in>
Any clients with these tags end up somewhere random (the first tag on the first
remaining screen). This certainly can be improved in the future, but at least
this is a start.
Signed-off-by: Uli Schlachter <psychon@znc.in>
When this force-argument is not given, the code will refuse to delete a tag
which has a non-sticky client. With this force argument, the client will just be
moved to the fallback tag.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This code uses delayed calls to lazily update things. Thanks to this, it can try
to update a screen long after it was removed. Fix this by just doing nothing on
invalid screens.
Signed-off-by: Uli Schlachter <psychon@znc.in>
It can now keep the different return values and use them in
later chain nodes.
It also add a "virtual" geometry argument so the geometry is applied
only after the last node is executed.
Finally, it fixes using pretend and a composite chain at the same time.
When there are no screens, screen[1] causes an error. Thus, this isn't a safe
fallback for these functions. Instead, this commit makes the code prefer the
primary screen, if possible. If no screen exists, then screen.primary will be
nil, but at least it won't throw an error like screen[1] does.
(This also changes the outdated copy of getbycoord that exists in
wibox.drawable)
Signed-off-by: Uli Schlachter <psychon@znc.in>
to reproduce:
1) spawn an xterm
2) enter 'sleep 10 && killall xterm'
3) start moving the terminal
There will be an error
(found by a yet to be commited integration test)
* awful.widget.graph: add clear() function.
* awful.widget.graph: doc fixes for add_value.
add_value did not show up in generated luadoc. And the value parameter does not need to be between 0 and 1.
* awful.widget.graph: local functions clear and add_value as methods of graph.
There used to be `awful.client.data.focus`, which was moved to
`awful.client.focus.history.internal`.
While the former was accessible, the latter is not.
This is useful to get a list of most recently focused clients, without
having to hook into the signal yourself.
Closes https://github.com/awesomeWM/awesome/issues/841.
When a tag is deleted, this code tries to select some other tag. If the tag
which is to delete is the last tag of a screen, this code failed and indexed a
nil value. Fix this with a simple "if".
Signed-off-by: Uli Schlachter <psychon@znc.in>
If a screen is removed while a re-layout is pending, previously this code would
cause errors and problems. Since the screen is gone, there is nothing to arrange
anyway and we can just not do anything.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit changes some tables that are used for per-screen stuff to have weak
keys, so that the screens can be garbage-collected, if needed.
Signed-off-by: Uli Schlachter <psychon@znc.in>
When there is a maximized and floating client,
`awful.placement.no_overlap` would end up with an empty list of areas to
place the client into.
This patch fixes it to use the default `screen.workarea` in that case.
Closes https://github.com/awesomeWM/awesome/issues/813.
Rules refactor, part 1
This fix the following awful.rules bugs:
* **x**: Broken when "border_width" is set or left titlebars are used
* **y**: Borken when"border_width" is set or top titlebars are used
* **width**: See above + right litlebar
* **height**: Same as above
* **switchtotag**: Have a race with the "manage" -> "tag.withcurrent" code in `awful.tag`
* **tag**: Had dead code
* **screen**: Had a race condition with switchtotag
* **urgent**: Had a race with screen and another with switchtotag+focus
* **focusable**: Was broken yet again when request::activate was introduced (and also because of FS1098, that I also fixed)
* **no_overlap**: The "no_overlap" call in rc.lua "manage" section conflict with the geometry rules as the hints are not set (idk why).
* **size_hints_honor**: If set to false, it would be applied too late, causing height and width offsets due to placement or various geometry related properties
Remove request::fullscreen and request::maximized_* and use
a single request for them. The other client resizing features
will soon also start to use this.
Due to recent changes, it was no longer possible to disable the
default tag selection handler. This commit extend the already
existing request::tag mechanism to let handlers select the tags.
There was a regression when refactoring the API. It was no longer
possible to disable the automatic tag selection.
Due to recent changes, it was no longer possible to disable the
default tag selection handler. This commit extend the already
existing request::tag mechanism to let handlers select the tags.
Testing demonstrated that many rule properties were broken when used
together. This commit try to address this by forcing an execution order
that doesn't trigger the problems.
It is still possible to write broken rules, but it should not happen by
accident anymore. Users should not try to assign the client a tag on
screen 2 and also use screen=screen[1].
This commit also add a 3 step process to apply rules.
Testing showed that many rules are currently broken because
of execution races.
Create a new dynamic tag for the client.
There was many unfixable race conditions that could only be
solved by better integrating the request:: system and
awful.rules. This has the side effect to make rules mandatory.